JPH09319562A - Composite computer system and method for install/ uninstall to composite computer system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high-performance and low-cost composite computer system in flexible configuration. SOLUTION: A host computer has a guest computer driver 112 for simultaneously controlling operations between guest computers, host main storage device 110 for storing an I/O device control program 113 for controlling data transfer between any specified host I/O device 150 and a guest main storage device 310 corresponding to an input/output request from the guest computer, and host controller 140 for performing data transfer control and the control of interruption to a host processor 120. The guest computer has the guest main storage device 310 including a shared inter-computer communication storage area 315 for setting an emulation program 312 having an input/output instruction executing function and interruption request information or the like and a guest controller 330 for performing data transfer control and the control of interruption to a guest processor 320, and based on an input/output identification table 323, data are inputted/outputted to the specified host I/O device 150 which can be shared.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite computer system for constructing a distributed computer system that distributes and executes information processing on a plurality of computers such as a client / server system, and in particular, a part of the processing operation of a computer,
The present invention relates to a form of a system that pursues flexibility and high performance such that input / output processing, interface processing with a system operator, and the like are realized by using another computer, and an installation method and an uninstallation method in a complex computer system.

[0002]

2. Description of the Related Art A conventional client / server system is a system in which a computer system providing a server function and a computer system providing a client function are connected via a network. This is shown, for example, in Figure 3.2 on page 55 of Ohm's "Novell's NetWare Strategy".

On the other hand, as a conventional example of a computer system that allows a program executed on a processor of another model to be executed by executing the input / output processing of one processor by the other processor, for example, There is JP-A-3-225551.

FIG. 23 is a diagram showing a configuration example of the input / output device access control system disclosed in Japanese Patent Laid-Open No. 3-225551. Detailed description of the operation is disclosed in JP-A-3-22.
Since it is described in detail in the text of Japanese Patent No. 5551, it is omitted here.

In the conventional configuration shown in FIG. 23, when an input / output process occurs in a program executed by a guest processor (which indicates the guest CPU 12 in the figure), an interrupt is issued to the host processor (which indicates the host CPU 10 in the figure). A request is generated and the input / output processing of the guest processor is executed by the emulator on the host processor. By doing so, in a system in which a processor of another model is connected to the computer and a program that can be executed by the computer of the processor of another model can be executed, it is possible to easily respond to the difference in the execution environment of the program of the other model without changing the program. It has the effect of being able to execute.

By the way, in a system such as the computer system described above, which is generally composed of client computers and server computers having different architectures, when the installation work of storing the software in a disk device connected to each computer is performed. , The installer prepared for each computer installed each operating system and application program. This conventional installation method will be described below.

FIG. 24 is a hardware configuration diagram of a conventional client / server system. The server computer is
Processor 31s, main memory device 32s, control device 33s, I / O device 34s, and I / O device 3 that perform bus data transfer control, interrupt control for the processor 31s, and the like.
It has a fixed disk 35s which is part of 4s. Similarly, the client computer also has a processor 31c, a main storage device 32c, a control device 33c, an I / O device 34c, and a fixed disk 35c.

FIG. 25 is a diagram showing an installation medium used for installing in a conventional client / server system. As the installation medium, a floppy disk is generally used as shown in FIG. 25, and a tape or the like is also used depending on the case. As a floppy disk for installation, an installation medium (hereinafter, FD for OS) 51 for each operating system for a server computer and a client computer
s, 51c and application program installation media (hereinafter, application FD) 52s, 52c are shown. The OS FDs 51s and 51c include operating systems for server computers (hereinafter referred to as server O).
S) 53s and an operating system for client computer (hereinafter referred to as client OS) 53c, an installer 54s for the server OS and an installer 54c for the client OS are stored. The application FDs 52s and 52c include an application program for server computer (hereinafter, server application) 55s and an application program for client computer (hereinafter, client application) 55c, an installer 56s for server application, and a client application. The installer 56c is stored therein. Each OS 5
3s, 53c and each application 55s, 55c
Are installers 54s, 54c and 56, respectively.
The fixed disks 35s, 3 by s, 56c
5c is copied.

At the time of installation, each OS is first
Each of the installers 54 operating on each OS stores a part or all of the OS stored in the FD 51 for use in each main storage device 32 and operates.
Each OS 53 is copied from the OS FD 51 to each fixed disk 35. In addition, each OS 53 stored in each main storage device 32 and operating.
Checks the configuration information of the I / O device 34 of each computer and writes it in a part of the area of the fixed disk 35 managed by the OS. Next, the respective application installers 56 operate on the respective OSs 53, and copy the respective application programs 55 from the respective application FDs 52 to the respective fixed disks 35. Similarly, each uninstaller (not shown) has its own O
S and the application program were uninstalled.

As a conventional example in which a single installer can install a plurality of types of OSs with different targets, there is a technique disclosed in Japanese Patent Laid-Open No. 5-100828. The technology disclosed here is intended for only one computer, and not for a plurality of computers having different architectures.
FIG. 26 shows the technique disclosed in Japanese Patent Laid-Open No. 5-100828. In FIG. 26, an installation program 43, which is an installer stored in a main storage device (not shown) of the computer system 41, externally supplements the OS stored in the installation medium 42 of a predetermined format with a physical image. Storage device 44
Is to be copied to. Even if the types of OS are different, the same format of the installation medium 42 is used, and the installation medium 42 is prepared according to the type of OS. Has the effect of being able to install.

[0011]

However, in the conventional client / server system, the client system and the server system are both independent computer systems, and each has a separate processor, memory, and I / O.
It is equipped with a device. In such a client / server system, there is a problem that at least two computer systems are required and a large amount of investment is required.

On the other hand, in the input / output device access control system technology disclosed in Japanese Patent Laid-Open No. 3-225551,
By connecting a processor of another model as a guest processor in the computer system and adding a control unit and an emulator operating on the host processor,
A program executed on a processor of another model can be executed on another computer system without any change. However, conventionally, there are a plurality of problems described below.

First, in the configuration of the conventional control unit for transmitting the input / output processing request from the guest processor to the host processor and controlling the data transfer and operation, the guest processor can execute one input / output processing at a certain time. Only one for output device. In this configuration, if the guest processor tries to cause a plurality of input / output devices to simultaneously execute input / output processing, a large amount of hardware of the control unit is required.

Further, it is not disclosed whether or not it is technically possible to cope with a case where there are a plurality of guest processors in which a program for input / output processing operates.

Further, since the input / output data corresponding to the input / output processing request from the guest processor is once transmitted and received via the guest processor, the instruction execution and the input / output of the guest processor such as the input / output channel mechanism. It is not possible to perform parallel processing with the guest processor on the guest processor side.

Further, since there is no means for converting the order of arrangement of data processed by a processor in byte units,
When the guest processor and the host processor are different models, there is a risk that a program executed by a computer of a processor of another model cannot be executed.

A client computer composed of a client computer and a server computer having different architectures.
It is a method to install on the server system,
As described above, the OS operating on each computer operates only on each architecture, but it is the same at the time of installation. That is, client O
The S is stored and operates in the main storage device of the client computer, and the server OS is stored and operates in the main storage device of the server computer. Then, the installer for the client operates only on the client OS, and the installer for the server operates only on the server OS. Also,
The I / O device that is the installation destination is different for each computer, and the OS that controls them is also different as described above. That is, the installer used to install the software in the I / O device for the client computer needs to be a program that operates on the client OS that controls the I / O device, and similarly for the server computer. The installer needs to be a program that runs on the server OS.

The installation technique disclosed in Japanese Patent Laid-Open No. 5-100828 is a technique for installing one OS in a single computer system. Further, it does not disclose the operation of the computers when two or more OSs having different logical formats are individually installed in one computer.

That is, according to the conventional installation method and uninstallation method, since only one OS can be stored in one installation medium, only one OS can be installed by one installation operation. Also,
Since the installation program cannot recognize the contents of the installation medium having different logical formats as a file, it has no choice but to copy it to the external auxiliary storage device as a physical image.

Further, there is no disclosure about an installing method and an uninstalling method in a complex computer composed of a first computer and a second computer.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a multi-functional computer system capable of higher performance, lower cost, and flexible system configuration.

Further, according to the present invention, in a compound computer composed of a first computer and a second computer, a plurality of software can be installed and uninstalled by one operation, and the second computer can operate from the first computer. It is an object of the present invention to provide an installing method and an uninstalling method that can be recognized as a file even by the computer.

[0023]

In order to achieve the above object, the present invention provides a composite computer system comprising a host computer and a guest computer, wherein the host computer has a preemptive multitask processing function. A host processor on which an operating system and an application program having the following are operating; a group of input / output devices connected to a system bus; and a corresponding one of the input / output devices for accessing the input / output devices. Input / output device control means for performing data transfer between guest computers, host control means for performing data transfer control on the system bus and interrupt control for the host processor, and one input device connected to the system bus for the guest computer. Considered as an output device to the host computer Guest computer control means for collectively controlling the guest computers, and a system bus connecting the guest computers. The guest computer operates an operating system and an application program independent of the host processor. A guest processor, an emulation means for executing an emulation instruction by the guest processor, and a guest control means for connecting the system bus to control data transfer with the host computer and interrupt control for the guest processor, and the host. A guest main storage unit including a computer-to-computer communication storage area that is accessible from a computer and exchanges various types of information with each other, and access to an input / output device of the host computer without using the guest processor. And butterflies.

The guest computer is a dedicated I / O
A group of guest-dedicated I / O devices connected to the bus and accessible only by the guest computer, and an I / O identification table holding I / O device identification information for identifying the I / O device specified by the I / O command are provided. However, the guest processor is further characterized in that the input / output identification table is used to determine the input / output device that is the target of the input / output instruction.

Also, the emulation means is configured to execute the address of the I / O device and the channel program based on a channel program executed when the guest processor receives an I / O command for any I / O device of the host computer. I / O request information including an address is set in the inter-computer communication storage area, and the guest computer control means executes an I / O command for the specified I / O device based on the I / O request information. Characterize.

The guest processor further includes an instruction decoder for interpreting the created channel program,
An execution unit that executes a predetermined process based on the content of the execution instruction in the machine language, the execution unit performing a process based on the interpretation of the instruction decoder.

Further, the guest control means has a guest status register for holding a state of the guest computer and a main cause of an interrupt from the guest computer to the host computer.

Further, the guest status register is
It is characterized in that the emulation means holds bit information indicating that an interrupt processing request is made to the host computer.

The guest control means has an interrupt request register that holds an interrupt processing request made from the guest computer to the host computer, and the host control means writes the interrupt request register to write the interrupt request. The feature is that the interrupt request from the guest computer is recognized.

Further, the guest computer control means uses the input / output map table that associates the input / output request from the guest computer with any of the input / output devices, and validates the mapping to the designated input / output device. It is characterized by examining.

Further, the input / output device control means performs data transfer between the input / output device and the guest main storage means based on the input / output request requested by the guest computer in accordance with an instruction from the guest computer control means. The file system provided by the host computer is used as it is.

Further, it is characterized by having a byte order conversion mechanism for converting byte data handled by the host computer or the guest computer and a byte order conversion order of transfer data between the host computer and the guest computer.

Further, the guest control means has an interrupt reception register for receiving an interrupt request from the host computer to the guest processor.

The interrupt reception register holds bit information for holding an interrupt request from the host computer upon completion of I / O execution, and the guest processor writes the bit information to input / output an instruction to the input / output device. Is characterized by recognizing the end of execution of.

Further, the input / output device includes a terminal operated by an operator, the guest computer has an operator emulation means for realizing an operator interface function, and the terminal operates on the data in the guest computer. It is characterized by allowing access.

Further, the input / output control means corresponding to the terminal sets address information of data in the guest computer to be accessed as instruction contents in the inter-computer communication storage area, and the operator emulation means, It is characterized in that processing is performed according to the set address information.

Further, the interrupt reception register holds bit information for holding an interrupt request instructed by an operator from the host computer, and the guest processor writes the bit information to the guest computer from the terminal. It is characterized by recognizing access.

The installation method according to the present invention is
In a composite computer system including a first computer and a second computer, a step in which an operating system of the first computer is stored in a main storage device of the first computer and operates, and an operating system of the first computer A step of storing an installer operating in the first computer in a main storage device of the first computer and operating the installer, a software operating on the first computer stored in an installation medium connected to the first computer by the installer, and a second Software operating on the second computer is stored in a disk device shared by the first computer and the second computer, and the software operating on the second computer is recognized as a file of the first computer. The first header information and the second recognized as a file of the second computer
Header information.

In the composite computer system according to the first aspect of the invention, the step of operating the operating system of the host processor, the step of operating an installer operating in the operating system of the host processor, and the step of operating the installer by the host processor Software operating on a host processor stored in an installed medium to be accessed, and software operating on the guest processor are stored in the input / output device,
The first header information in which the software operating in the guest processor is recognized as a file in the host processor and the second header information in which the software is recognized as a file in the guest processor.
Header information.

In the above installation method, the operation of the input / output device control means is stopped, the operation of the operating system independent of the host processor is stopped, and the operation of the guest computer control means is stopped. And a step of executing the installation after the termination processing of each step by the installer for executing the installation is completed.

Further, the uninstall method according to the present invention is, in the composite computer system according to the first invention, system information comprising information relating to the input / output device, the input / output device control means and the guest computer control means. Corresponding to the guest dedicated input / output device, and a step of searching for information regarding the input / output device control means and the guest computer control means, deleting a target file, and searching for information regarding the input / output device And deleting the system information, and the step of deleting the system information.

Further, in the above uninstall method, the step of stopping the operation of the input / output device control means, the step of stopping the operation of the operating system independent of the host processor, and the operation of the guest computer control means. And a step of executing the uninstall after the termination processing of each step by the uninstaller that executes the uninstall is completed.

[0043]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings.

System Configuration in the Present Embodiment FIG. 1 is a schematic block configuration diagram showing an embodiment of the composite computer system according to the present invention. As shown in FIG. 1, this system includes a host computer 100 and a guest computer 3.
00 and the system bus 13 in the host computer 100
It is configured to be connected with 0. In the present embodiment, components on the host computer 100 side are numbered in the 100s, and components on the guest computer 300 side are numbered in the 300s.

The host computer 100 has a host main memory 110 for storing various programs and data, a host processor 120 as a central processing unit in the host computer 100, data transfer control on the system bus 130, and an interrupt to the host processor 120. It has a host control device 140 as a host control means for controlling, and a host I / O device 150 which is connected to the system bus 130 and is a group of input / output devices in the host computer 100.

The guest computer 300 is a guest main memory device 310 for storing programs and data, and a central processor in the guest computer 300, which is the host processor 1.
Guest processor 320 in which an operating system and application programs independent of 20 operate
And the system bus 130 are connected to the host computer 100.
Guest control device 330 as a guest control means for performing data transfer control between the guest processor 320 and the guest processor 320, a guest main memory bus 340 connecting each device, and a guest computer 300 unique to the guest processor 320. Dedicated I / O bus 350 and I / O
A group of guest dedicated input / output (I / O) devices 360 connected to the bus 350 and accessible only by the guest computer 300
And Guest dedicated input / output (I / O) device 360
Is composed of at least one input / output device.

FIG. 2 is a diagram showing an example of the software configuration executed by each computer in this embodiment.

The host computer 100 includes the host computer 1
A host operating system (hereinafter referred to as a host OS) 111 that manages and controls system resources in 00 and has a function of forcibly switching application programs by preemptive multitask processing.
And the following various application programs are prepared. The guest computer driver 112 is the system bus 1
Guest computer 300 connected to host computer 1
When viewed from 00, it is treated as one input / output device, and the hardware operation of the guest computer 300 in the host computer 100 is collectively controlled. I / O device control program 11
3 is prepared for each connected input / output device, and is activated by the guest computer driver 112 to control the input / output operation for each input / output device. Although details will be described later, specifically, data transfer between an individual input / output device specified by an input / output (I / O) instruction execution request issued from the guest computer 300 and the guest main storage device is performed. Control. The operator interface control program 114 is a host I / O operated by an operator via the host OS 111.
By communicating between the input / output device of the O device 150 and the guest computer 300, the operator function required in the guest computer 300 is realized. The application program 115 is the host OS 111 of the host computer 100.
Various programs that run on the above. As can be understood from the above description, the input / output device control means in this embodiment is the I / O device control program 113 and the operator interface control program 114, the guest computer control means is the guest computer driver 112, and the host processor. It is realized by executing in 120.

On the other hand, in the guest computer 300, a guest operating system (hereinafter referred to as guest OS) 311 that manages and controls system resources in the guest computer 300 and enables execution of application programs.
And an input / output instruction execution function and an operator interface function of the guest computer 300 by being arranged in a specific area in the guest main memory device 310 and executing an emulation instruction by a program using the machine language instruction set of the guest processor 320. An emulation program 312 that realizes the above and various application programs 313 that operate on the guest OS 311. As can be understood from the above description, the emulation means in the present embodiment realizes the emulation program 312 that realizes the input / output instruction execution function of the guest computer 300, and the operator emulation means realizes the operator interface function. Emulation program 312
Are respectively executed by the guest processor 320. In this way, as the emulation program 312, a program having a different function is selected and executed depending on the function to be executed.

FIG. 3 is a system configuration diagram for explaining the operation of the hardware and software configuration example of the composite computer system according to the present embodiment shown in FIGS. 1 and 2. The same elements as those in FIGS. 1 and 2 are designated by the same reference numerals.

The guest main storage device 310 as the guest main storage means in the guest computer 300 stores the software shown in FIG.
Stores a channel program 314 which is used when performing a data transfer in and defines the actual input / output operation. Further, an inter-computer communication storage area 315 which is provided in a specific address area and which is shared by the guest processor 320 and the host processor 120 and which is accessible to each other is provided. Here, an interrupt request from the guest computer 300 to the host computer 100 is provided. Detailed information, information such as interrupt factors at the time of an interrupt request from the host computer 100 to the guest computer 300, I / O device control program 1
Various information such as a synchronization flag between 13 and the emulation program 312 is stored and exchanged with each other. An example of this internal configuration is shown in FIG. 4, and the details will be described in the operation example as appropriate.

The guest processor 320 includes an instruction decoder 321, an execution unit 322 and an input / output identification table 3.
Equipped with 23. The instruction decoder 321 interprets machine language instructions such as channel programs and prepares for execution. The execution unit 322 executes a machine language instruction based on the execution instruction content supplied from the instruction decoder 321. Also, when executing a machine language instruction, it is determined whether or not it is an emulation instruction for emulation.
When an emulation instruction is detected, emulation is executed. When an input / output instruction to the guest dedicated I / O device 360 is performed, input / output is performed via the I / O bus 350, or interrupt processing is executed when an interrupt occurs. To do.
In the input / output identification table 323, the I / O device specified by the input / output command is the host I / O device 150 or the guest-only I / O device
It holds identification information for identifying the O device 360 and is used by the guest processor 320. An example of the input / output identification table 323 is shown in FIG.

The guest controller 330 includes a system bus interface controller (hereinafter referred to as "system bus I / F controller") 331, a byte order conversion mechanism 332, an interrupt request register 333, and a guest status register 3
34 and an interrupt reception register 335. The system bus I / F control unit 331 controls interface control and data transfer operation from the guest computer 300 to the system bus 130. The byte order conversion mechanism 332 is an array of byte data within a processing unit on the host main memory 110 and an array of byte data within a processing unit on the guest main memory 310, that is, if the byte order is the same, the host No conversion is performed at the time of all access from the computer 100 to the guest main storage device 310, and the host computer 10
When the byte order of 0 and the guest computer 300 are different, the byte data in the guest computer 300 and the corresponding conversion are performed at all access from the host computer 100 to the guest main storage device 310. Details of the configuration and operation of the byte order conversion mechanism 332 will be described later. The interrupt request register 333 holds an interrupt processing request made from the guest computer 300 to the host computer 100, and notifies the host processor 120 via the host control device 140 as one interrupt request level in the interrupt of the host computer 100. This interrupt request register 33
3 is set when any bit information included in the guest status register 334 is set, so the host processor 120 can immediately know that an interrupt has occurred in the host computer 100. The guest status register 334 holds the state of the guest computer 300 and also holds the main cause of interruption from the guest computer 300 to the host computer 100. Therefore, by referring to the contents of the guest status register 334, the cause of the interrupt can be known. This content is shown in FIG. 6, and details will be described later. Interrupt reception register 3
35 receives an interrupt request to the guest processor 320 from the host computer 100. This content is shown in FIG. 7, and details will be described later.

Further, as the input / output device connected to the host computer 100, in the present embodiment, a fixed disk device (hereinafter referred to as “HDD”) 151, a magnetic tape device (hereinafter referred to as “MT”) 152, A local area network control device (hereinafter referred to as "LAN") 153, an input / output device (hereinafter referred to as "terminal") used by an operator for both the host computer 100 and guest computer 300 1
54 and other than the above, such as a floppy disk device or C
Another I / O device 155 such as a D-ROM device is mounted. The other I / O device 155 is not necessarily required to support the guest computer 300. I / O device control program 113 stored in the host main memory 110
Is an I / O device control program (HDD) 113a, an I / O device control program (MT) 113b, an I / O device control program (LA) corresponding to each of the input devices.
N) 113c, the operator interface control program 114, etc. are stored respectively.

The host computer 100 in this embodiment
Includes a main computer, a processor, and an input / output device to form a complete computer system, and a part or all of a host I / O device is used as a guest computer 300.
It has a configuration that can be shared with the input / output device of.

Guest computer 300 according to the present embodiment
Includes a main storage device and a processor. By sharing the input / output device and the operator interface device with the input / output device of the host computer 100, the original guest computer 30
It constitutes the same complete computer system as zero.

The system bus 130 of the host computer 100 in this embodiment is the host main storage device 11.
0 and the host I / O device 150 as a data transfer path, and also between the guest main memory device 310 of the guest computer 300 and the host I / O device 150, and between the host processor 120 and the guest processor 320. It is also used as a transfer route.

FIG. 6 shows an example of the configuration of the guest status register 334 described above, which holds the bit information shown below. In FIG. 6, the HWI bit indicates the guest computer 3
00 means that the host computer 100 makes an interrupt processing request, and is set by the hardware when a hardware error occurs in the guest computer 300, for example. The EMI bit means that the emulation program 312 makes a request for interrupt processing to the host computer 100. For example, the host computer 100 is executed when an input / output instruction is executed.
It is set when requesting to start input / output processing. The STI 1 bit means that the state change of the guest processor 320 has occurred in the guest computer 300, and in particular, the guest processor 320 is stopped (sto).
p) indicates that the state has been entered. The STI 2 bit is the guest processor 32 in the guest computer 300.
This means that a state change of 0 has occurred, and in particular, the guest processor 320 executes instructions (operating).
It has entered the state. STI 1 bit and S
Both TI2 bits are set by the hardware of the guest computer 300. GPROC Status is
It is a group of bits that indicates the current state of the guest processor 320, and is set directly by the guest processor 320. H
When at least one bit of WI, EMI, STI1, and STI2 is set, the interrupt request register 333 is set and an interrupt request from the guest computer 300 is sent to the host controller 140 via the system bus 130. It has been told.

FIG. 7 is a diagram showing the internal structure of the interrupt reception register 165 in the guest controller 330.
The interrupt reception register 165 is a register for detecting an interrupt request from the host computer 100, and is an IOI.
It holds bit information of bits and OPI bits. IO
The I bit is set in the case of an I / O end interrupt request. The OPI bit is set in the case of an operator interface processing interrupt request to the guest computer 300 according to an instruction from the operator.

FIG. 8 shows an input / output request issued from the guest computer 300 in the host computer 100 by the host I / O.
FIG. 6 is a diagram showing a configuration example of an input / output map table 116 used by an I / O map mechanism associated with one of the O devices 150. This is stored in the host main storage device 110.

FIG. 9 shows the byte order conversion mechanism 3 described above.
It is a figure showing the example of composition of 32. The byte order conversion mechanism 332 selects one of the two byte position data input signals on the system bus 130 as an output signal on the guest main memory bus 340 according to the value of the select signal, and a guest main memory bus. 2 on 340
A multiplexer 337 that selects one of the byte position data input signals as an output signal on the system bus 130 according to the value of the selection signal, and an input when the output control signal is output to the guest main memory bus. A buffer 3 that outputs a signal to the guest main memory bus and operates so as not to output to the guest main memory bus when the output control signal has a value indicating that the signal can be output to the guest main memory bus.
38 and the value indicating that the output control signal can be output to the system bus 130, the input signal is set to the system bus 130.
And a buffer 339 which operates so as not to output to the system bus 130 when the output control signal to the system bus 130 has a value indicating that output is impossible.

FIG. 10 is a diagram showing an operation when mapping the input / output operation for the HDD 151 designated by the input / output command executed in the guest computer 300 to a file on the host computer 100.

Description of Operation in this Embodiment A characteristic of this embodiment is that the host I / O device 150 can be shared by the guest computer 300 and the host computer 300 executes the host. The guest computer 3 performs input / output processing for the I / O device 150.
00 guest processor 320. The characteristic operations of this embodiment are as follows: (1) input / output instruction execution operation of the guest computer 300, (2) data transfer operation specified by the input / output instruction of the guest computer 300, and (3) guest computer 300 Input / output end interrupt processing operation, (4) input / output instruction execution operation to the dedicated I / O device 360 of the guest computer 300, (5) communication operation between the operator and the guest computer 300, and (6) installation / uninstallation method Will be explained separately.

(1) Actual input / output instruction of guest computer 300
Action operation 11 and 12 are views showing the internal processing flow when performing the multifunction computer system described above the output instruction in the guest computer 300 in the present embodiment, a continuation of FIG. 12 FIG. 11 FIG.

First, the execution of input / output instructions in the guest computer 300 will be described with reference to FIGS. 3, 11 and 12.

When a file access (for example, read or write) is executed in the application program 313 of the guest computer 300, the application program 313 makes a system call to the guest OS 311. The guest OS 311 called by the system call converts the file specified by the application program 313 into a physical position on the fixed disk device where the file is stored through the file system managed by the guest OS 311. This fixed disk device is a virtual device on the guest computer 300 used to transfer data to and from the host I / O device 150.

Next, the guest OS 311 prepares on the guest main memory device 310 a channel program 314 in a format that can be interpreted and executed by the I / O device control program 113 in order to cause the hardware to perform input / output operations. . The channel program 314, as shown in FIG. 10, for example, reads data from the input / output device to the guest main memory device 310 and the guest main memory device 3.
Writing data from 10 to the input / output device (write
A plurality of channel command words composed of a command designating the type of operation such as e) and more detailed information on the input / output device such as the cylinder number and the track number used in the operation designated by the command are configured.

When the creation of the channel program 314 is completed, the guest OS 311 executes a guest input / output instruction for designating any input / output device for file access and starting the input / output operation.

The machine language format of the guest input / output instruction is composed of an instruction code for specifying the input / output instruction and a word including I / O device address information, as shown in FIG. The I / O device address information is information for specifying an I / O device which is a target of input / output operation, that is, a transfer partner. In this embodiment, since the host I / O device 150 and the guest-only I / O device 360 are provided as I / O devices, the I / O device itself belonging to either one or the file on the I / O device is specified. The information to do is set. The contents of the I / O device address information related to the host I / O device 150 are as follows:
00 and the host computer 100
Are registered in the input / output map table 116.

The input / output instruction interpreted by the instruction decoder 321 in the guest processor 320 is sent to the execution unit 322 to start executing the input / output instruction. The execution unit 322 is an emulation instruction that causes the emulation program 312 to execute the input / output instruction received from the instruction decoder 321 based on the I / O device address information included in the input / output instruction and the identification information of the input / output identification table 323. If it is determined that the execution state is switched to the emulation program execution state, a predetermined process of calling the emulation program 312 is performed. It should be noted that the I / O device 3 dedicated to the guest
Details of the processing when it is determined that the command is for 60 will be described later.

The called emulation program 312 starts the execution processing of the input / output instruction. First, the emulation program 312 prepares to notify the host computer 100 of the start of the input / output processing by the input / output command, and prepares to transmit the GFACTO in the inter-computer communication storage area 315.
R is the execution request of the input / output instruction and the I / O device address of the host I / O device 150 that is the target of the operation of the input / output processing, and GDATA is the head address where the channel program 314 is stored in the guest main storage device 310. The value is set as the input / output request information.

Subsequently, the emulation program 312
Sets an EMI bit, which is included in the guest status register 334 shown in FIG. 6 and means an interrupt processing request to the host computer 100, in order to transmit the input / output instruction processing request to the host computer 100. After setting the EMI bit, emulation program 31
2 is a GTERM stored in the inter-computer communication storage area 315 after the input / output instruction execution by the host computer 100 is completed.
It keeps waiting while polling until the bit is set by the host computer 100.

In this way, since the guest computer 300 is provided with the emulation means, the guest processor 320 is
The I / O instructions executed above can actually be executed, eliminating the need to change the machine language instruction set and hardware of the guest processor 320.

Next, when the EMI bit of the guest status register 334 is set, the interrupt request register 3
33 is set, and the interrupt request from the guest computer 300 is transmitted to the host controller 140 of the host computer 100 via the system bus 130. Upon recognizing the interrupt request from the guest computer 300, the host control device 140 issues an interrupt request to the host processor 120. When the host processor 120 enters the interrupt acceptable state, it accepts an interrupt request from the guest computer 300 and starts interrupt processing.

The host processor 120 that has received the interrupt request from the guest computer 300 is
When the interrupt request from 0 is recognized, the guest computer driver 112 is activated and interrupt processing is started.
The guest computer driver 112 first reads the guest status register 334 in order to know the cause of the interrupt requested by the guest computer 300. At this time, the bit group for generating an interrupt request of the guest status register 334, that is, the HWI, EMI, STI1, STI2 bits and the interrupt request register 333 are reset. The guest computer driver 112 examines the read guest status register 334, and the EMI bit is set.
Recognize that it is an interrupt request by.

Subsequently, the guest computer driver 112 reads GFACTOR in the inter-computer communication storage area 315 in order to check the detailed factor of the interrupt request by the emulation program 312. Since the GFACTOR stores the execution request of the input / output instruction set by the emulation program 312 and the I / O device address of the input / output device that is the target of the input / output processing operation as described above, the guest computer driver 112 Recognizes that it is necessary to execute the input / output command and start the input / output processing operation for the designated host I / O device 150.
Further, the guest computer driver 112 reads GDATA in the inter-computer communication storage area 310 and obtains head address information in which the channel program 314 is stored in the guest main storage device 310.

Next, the guest computer driver 112 has the map table 116 of the I / O map mechanism shown in FIG.
Is used to check the legitimacy such as whether it can be mapped to the transfer partner corresponding to the I / O device address. The “I / O device address in the guest computer” shown in FIG. 8 is the I / O device address included in the input / output command executed by the guest OS 311 and the transfer partner is the host. It is either one of the input / output devices included in the I / O device 150 or a file included in the input / output device.

The I / O device address included in the guest input / output instruction shown in FIG. 10 is, for example, 1 as shown in FIG.
Assuming that the I / O device address IOA specified by x'10 in hexadecimal notation is used, the host computer 10 corresponding to IOA = x'10 by using the map table 116.
File name in HDD 151 of 0: D: \ GIO \ HDD
01 can be obtained. At this point, the guest computer driver 112 can specify the transfer partner in the input / output request from the guest computer 300. By using the input / output map table 116, it can be seen that a simple identifier may be used without using an address value such as the I / O device address IOA.

I / O specified by the guest OS 311
When the device address is an undefined or illegal device address such as not provided by the host computer 100, or when the specified host I / O device 150 is already operating by another I / O command, the input to the HDD 151 When it is determined that the output operation cannot be executed, the guest computer driver 112 returns the processing result to GTER.
Set to M to end interrupt processing.

On the other hand, in the guest computer driver 112, the I / O specified by the input / output instruction from the contents of GFACTOR.
The host I / O device 150 of the host computer 100 corresponding to the O device address (the HDD 15 in the example currently described)
If the guest computer driver 112 determines that the input / output operation by the file D: \ GIO \ HDD01) on No. 1 is executable, the guest computer driver 112 determines the I / O device address designated by the input / output command, that is, the I / O device corresponding to the HDD 151. The control program (HDD) 113a is instructed to start the input / output operation, and the GFACTOR and GDATA information set in the inter-computer communication storage area 315 and the file name information based on the input / output map table 116 are delivered.
The I / O device control program (HDD) 113a is a GD
The transfer source and the transfer destination of the data can be specified from the information such as the cylinder and track included in the channel program 314 set in the ATA and the file name information based on the input / output map table 116. Then, the guest computer driver 112 sets in GTERM that the input / output instruction processing has been correctly executed, and ends the interrupt processing.

In the guest computer 300, the GTE of the emulation program 312 for processing the input / output instruction is completed by the host computer 100.
Although waiting for the RM end code set by polling, the input / output command processing of the host computer 100 ends and G
When it is detected that the processing result is set in the TERM, the process proceeds to the end processing of the input / output instruction. The emulation program 312 sets the execution end condition code of the input / output instruction in the guest processor 320 based on the input / output instruction processing result by the host computer 100 set in GTERM, and clears the GTERM area to execute the emulation program execution state. To finish. And
The execution unit 322 in the guest processor 320 ends the execution of the input / output instruction and proceeds to the next machine language instruction execution.

As described above, in the present embodiment, since the processing for the input / output request from the guest computer 300 to the host I / O device 150 can be performed, the guest computer 300 has the input / output device. It is no longer necessary, and the cost of the system can be reduced.

According to this embodiment, since the input / output map table 116 is provided, the I / O device address managed by the guest computer 300 and each input / output device are set as the host OS.
One file managed by 111 can be associated with each other, and an input / output device or a file as a transfer partner of the guest computer 300 can be specified. On the other hand, the physical location of the virtual fixed disk device managed by the guest computer 300 is passed to the host computer 100 so that the transfer destination of the host computer 100 can be specified. That is, since the transfer source and the transfer destination of the data can be specified, the guest computer 300 can share the host I / O device 150 in the host computer 100.

The guest computer 30 is also operated as described above.
Since the physical position of the virtual fixed disk device managed by 0 is associated with one file managed by the host OS 111, the I / O device control program 113 keeps the file system provided by the host computer 100 unchanged. Can be used. That is, I / O
If the device control program 113 performs a normal file access, the guest computer driver 112 will convert and access the physical position of the virtual fixed disk device managed by the guest computer 300 according to the access. As a result, from the viewpoint of the host computer 100 side, the function that the host OS 111 has with respect to the file system without special work even for the virtual fixed disk device of the guest computer 300, for example, from the guest computer 300 by the disk cache, Improved fixed disk access performance, failure recovery function, security function, etc. can be applied as they are.

It should be noted that here, as the input / output device which is the target of the input / output command processing executed by the guest computer 300, HD
The operation has been described using the D151 as an example, but another host I /
An input / output device in the O device 150, such as MT 152 or LA
The guest computer 30 is also operated in the same manner for N153.
Input / output instruction processing from 0 can be executed.

Depending on the type of I / O device designated by the input / output command processing from the guest computer 300, the host computer 1
The guest computer driver 1 is the part where the processing is different on the 00 side.
There are the following two points in the process of 12.

First, the I / O device address designated by the I / O instruction is different in the entry of the I / O map table 116 used when mapping the I / O device address to the corresponding host I / O device. Secondly, the I / O device control program 113 corresponding to the type of the host I / O device 150 specified by the I / O map mechanism is instructed to start the input / output operation.

Further, since the I / O device control program 113 is individually provided for each input / output device, under the operating system having the preemptive multitask processing function, each input / output device is operated in parallel at the same time. Can be made. Further, a plurality of processes can be simultaneously operated in parallel for one input / output device.

(2) By the input / output command of the guest computer 300
Specified data transfer operation 1. In the input / output instruction execution operation of the guest computer 30,
The control flow such as interrupt control for 0 to access the file stored in the host I / O device 150 has been described. Here, the operation for actually performing the data transfer will be described with reference to FIGS. 11 and 12.

As described above, the I / O device control program 113a for the HDD 151, which is instructed to start the operation of the input / output process, reads the channel program 314 in the guest main memory device 310 based on the GDATA information, Interpret this.

Regarding the operation of associating the command in the channel program 314 issued to the virtual fixed disk device in the guest computer 300 with the HDD 151 in the host I / O device 150 which actually stores the data This will be described with reference to FIG.

In FIG. 10, first, the guest computer 30
The I / O device address specified in the machine language of the I / O instruction executed at 0 is the guest computer driver 112.
In the input / output map table 116, the host OS
It is associated with a specific file in the file system managed by 111. Subsequently, the I / O device control program 113a reads the channel program 314 stored in the guest main storage device 310. Then, the I / O device control program 113a is the channel program 31
Guest computer 300 associated with the channel command in 4
The physical position information in the fixed disk device in the above, such as values of cylinder x, track y, sector z, is stored in the host OS.
One-to-one to logical position information in a specific file in a file system managed by 111, for example, record number
Correspond to. In other words, 1 in the guest computer 300
The fixed disk device of the book is associated with one file managed by the host OS 111 on the host computer 100. Then, I / O to the HDD 151
When the device control program 113a issues a file access request by designating logical position information in a specific file to the host OS 111, the host OS 111 uses the actual HDD 15 based on the file system information managed by itself.
1 to obtain the physical position on the HDD 151 to access the necessary data on the HDD 151, and use the result as the I / O device control program 11
Return to 3a. In this way, it becomes possible to map the input / output processing for the fixed disk device in the guest computer 300 to the HDD 151 of the host computer 100.

As described above, the I / O device control program 113a transfers data between the file stored in the HDD 151 of the host computer 100 and the virtual fixed disk device of the guest computer 300 on the system bus 13.
Through 0. The guest OS 311 uses the physical location of the virtual fixed disk device and the guest main storage device 31.
Since 0 is associated with the guest computer 300,
This means that the file access to 151 could actually be performed.

Here, what is required for data transfer between the host I / O device 150 and the guest main memory device 310 is the arrangement order of data processed by the host computer 100 and the guest computer 300 (byte order). In advance, the arrangement order of compatible data in the guest computer 300 is guaranteed by seeing from the guest OS 311 or the application program 313 of the guest computer 300. For this purpose, a byte order conversion mechanism 332 is provided to enable bidirectional data transfer between the host computer 100 and the guest computer 300. In the present embodiment, the byte order conversion mechanism 332 is provided in the guest controller 330, but it may be provided in the host controller 140.

The operation of the byte order conversion mechanism 332 will be described with reference to FIG.

In FIG. 9, the byte order conversion instruction signal is fixedly set in advance in the system bus I / F control unit 331 to either a value for converting the byte order when the system is started up or not. If set to not convert byte order,
No byte position conversion is performed in the multiplexers 336 and 337, and data transfer between the system bus 130 and the guest main memory device 310 is performed at the same byte position. When the byte order conversion instruction signal is set to convert the byte order, the multiplexer 3
36 and 337, when data is transferred between the system bus 130 and the guest main memory device 310, the most significant byte and the least significant byte are counted in both directions, and the second byte and the least significant byte are counted from the most significant byte side. The byte data is converted such that the second byte ...
Then, from the system bus 130 to the guest main memory device 31
When data is transferred to 0, the guest main memory bus output enable signal in the figure supplied from the system bus I / F control unit 331 becomes significant, and the data selected and output by the multiplexer 336 is passed through the buffer 338 to the guest. Output to the main memory bus 340. Conversely, when data is transferred from the guest main memory device 310 to the system bus 130, the system bus I / F control unit 331
The system bus output enable signal in the figure supplied from the device becomes significant, and the data selected and output by the multiplexer 337 is output to the system bus 130 through the buffer 339.

As described above, by operating the byte order conversion mechanism, the arrangement order of byte data at the time of data processing in the guest computer 300 and the host computer 10
It is possible to maintain compatibility even if the byte data arrangement order of the 0 data processing is different.
That is, even if the host computer 100 and the guest computer 300 are different models, bidirectional data transfer can be performed by using the byte order conversion mechanism 332 of this embodiment.

Next, for an I / O device such as the magnetic tape device MT152 in which the data recording medium is exchangeable, the mounted recording medium is the host OS 111.
Alternatively, the I / O device in which the exchange medium is mounted is exclusively used depending on which one of the guest OSs 311 handles the format. That is, when the magnetic tape of the medium format handled by the host OS 111 is mounted, the input / output processing from the host OS 111 is accepted and executed. On the other hand, when the magnetic tape of the medium format handled by the guest OS 311 is mounted, the I / O device control program 113b of the host computer 100 executes the input / output processing issued from the guest computer 300 via the host OS 111. . The device driver that controls the operation of the MT 152 in the host OS 111 is configured to support the operation control function for the medium formats of both the host OS 111 and the guest OS 311.

If the guest computer 300 executes an input / output command for the MT152 while a medium of a format supported by the host OS 111 is mounted in the MT152, the I / O corresponding to the MT152 of the host computer 100 is executed. From the device control program 113b to the host OS
Although the input / output access is issued via 111, the input / output processing is not performed by recognizing that the mounted medium format is different from the format handled by the guest OS 311. vice versa,
Even when an application program 313 of the host computer 100 accesses the MT 152 while a medium of a format handled by the guest OS 311 is attached to the MT 152, the application program 115 of the host computer 100 may also access the MT 152 due to the difference in medium format. No I / O processing is done.

Further, even if the host computer 100 and the guest computer 300 are different in the notation format of character data, that is, the character code, the data handled by the guest computer 300 stored in the host I / O device 150 is stored in the host computer. The computer 100 can perform system processing without being aware of anything.

When the input / output operation for one channel command in the channel program 314 ends, the I / O
The device control program 113a subsequently reads the next channel command and continues the input / output operation. In this way, the predetermined I / O device control program 113a activated based on the input / output command of the guest computer 300
Autonomously interprets and executes the channel command until the end is specified in the channel program 314.

That is, according to this embodiment, even if the input / output instruction of the guest computer 300 is input, the host computer 100
Since the data transfer is performed by the execution of the I / O device control program 113 on the side, the guest processor 3
20 is not used for data transfer based on the input / output request of the guest computer 300. Therefore, in the guest computer 300, since the input / output processing related to the data transfer and other processing are apparently performed in parallel, the system performance of the guest computer 300 can be improved. .

The guest computer 300 is configured so that all access to the host I / O device 150 is collectively controlled by the host OS 111.
Exclusive control of input / output access from the host computer and input / output access from the host computer can be realized by the function of the host OS 111. As a result, a flexible complex computer system can be easily constructed.

(3) Input / output termination rate of the guest computer 300
Include processing operation 2. In the input / output data transfer operation of the guest computer 3,
The flow of the process of accessing the file stored in the host I / O device 150 by the host computer 00 by the operation of the host computer 100 has been described. 13 and 14
FIG. 14 is a diagram showing an internal processing flow when executing the input / output end interrupt processing that occurs at the completion of the input / output processing by the guest computer 300 in the composite computer system of this embodiment. Although it is a continuation of the drawing, the operation of the interrupt processing after the end of the data transfer will be described based on these figures.

When the I / O device control program 113a detects a channel command meaning termination in the channel program 314 and terminates the I / O processing, it notifies the guest computer driver 112 of an I / O termination interrupt request. Then, the I / O device control program 113a is
It waits until the guest computer 300 accepts an input / output end interrupt for its own I / O device address.

On the other hand, the guest computer driver 112 which has received the I / O end interrupt request requests the guest computer 30
An interrupt request from the HDD 151 for 0 is pending as an internal state of the driver, and an input / output end interrupt request is set in the interrupt reception register 335 in the guest controller 330 via the system bus 130.
In the case of this input / output end interrupt request, the IOI bit is set.

When the IOI bit of the interrupt receiving register 335 is set, the guest processor 320 is notified of the interrupt request. And the guest processor 32
When 0 is set in the interrupt acceptable state, the interrupt request by the IOI bit is accepted and the guest processor 3
20 enters the interrupt process.

Guest processor 32 that has entered interrupt processing
0 reads the interrupt reception register 335 and recognizes the interrupt factor as an input / output end interrupt because the IOI bit is set. The interrupt reception register 335 is cleared after the register is read from the guest processor 320.

The guest processor 320, which has recognized the input / output end interrupt, executes the input / output end interrupt process in the execution unit 322.
Call 2.

The called emulation program 312 sets acceptance of the input / output end interrupt in GFACTOR in the inter-computer communication storage area 315,
Subsequently, the emulation program 312 sets an EMI bit in the guest status register 334 as an interrupt request to the host computer 100. Then, the emulation program 312 waits for the completion of the input / output end interrupt process by the host computer 100 by polling GTERM in the inter-computer communication storage area 315.

EMI is added to the guest status register 334.
When the bit is set, the interrupt request register 333 is set, and the interrupt request from the guest computer 300 is input to the host processor 120 via the system bus 130 and the host controller 140. At the timing at which the requested interrupt can be accepted, the host processor 120 calls the guest computer driver 112 to accept the interrupt request from the guest computer 300 and enter the interrupt process. The guest computer driver 112 uses the guest status register 334 to know the interrupt factor.
Is read via the system bus 130. At this time, the EMI bit in the guest status register 334 and the interrupt request register 333 are cleared.

The guest computer driver 112 which has read the guest status register 334 has the EMI bit set, so that the emulation program 3
Recognize that it is an interrupt processing request by 12. Then, GFACTOR in the inter-computer communication storage area 315 is read in order to know the more detailed interrupt factor. The read GFACTOR is set by the emulation program 312 to be the acceptance of the input / output end interrupt, so the guest computer driver 112
Starts the input / output end interrupt acceptance processing. At this time, as described above, the input / output end interrupt request from the HDD 151 is pending as the internal state of the guest computer driver 112.

By the way, the I / O device control program 113 for controlling the input / output operation for the HDD 151 described above.
During the time when the input / output end interrupt acceptance processing by the emulation program 312 in the guest computer 300 reaches the host computer 100 after a makes an I / O end interrupt request, a host I / O device other than the HDD 151, for example, M
The input / output operation from the guest computer 300 to the T152 may be performed in parallel by the I / O device control program 113b to complete the input / output processing. In such a case, MT1 is stored inside the guest computer driver 112.
The input / output end interrupt request from the I / O device control program 113b for 52 is pending in addition to the input / output end interrupt request from the HDD 151. Therefore, the guest computer driver 112 selects one host I / O device 150 having the highest priority from the pending I / O end interrupt requests, for example, HD.
The request from D151 is selected to notify the corresponding I / O device control program 113a of acceptance of the input / output end interrupt, and the interrupt processing for the input / output end interrupt acceptance factor from the guest computer 300 is ended.

I that has received the acceptance of the I / O end interrupt
/ O device control program 113 (113a in this example)
Stores various information such as the input / output operation end status necessary for the input / output end interrupt of the guest computer 300 in a predetermined address of the guest main storage device 310. When this storage processing is completed, the I / O device control program 113 notifies the emulation program 312 of the guest computer 300 of the completion of the processing on the host computer 100 side as an I / O end interrupt, and the inter-computer communication storage The end data is set in GTERM in the area 315. Then, the input / output end interrupt process in the I / O device control program 113 is completed.

When the data indicating that the input / output end interrupt processing by the host computer 100 side has been set in GTERM, the emulation program 312 polling the data is processed by the host computer 100 by the input / output end interrupt reception processing. Recognizing that it was completed,
The guest computer 300 starts the input / output end interrupt process. At this time, the emulation program 312
Clear the contents of GTERM. Then, the emulation program 312 sets the start address of the input / output end interrupt processing routine in the program counter in the guest processor 320, and exits from the emulation program execution state. This operation causes the guest processor 320 to start executing the machine language instruction from the start address of the guest OS 311 routine of the input / output end interrupt processing.

As described above, the termination processing after the data transfer for the access request from the guest computer 300 to the host I / O device 150 is performed. According to the present embodiment, the guest computer 300 and the host computer Since the system 100 and the host I / O device 150 are connected by the system bus 130 of the host computer 100, it is possible to construct a higher performance system as compared with a system which has conventionally communicated via a network. .

Further, since the host computer 100 and the guest computer 300 can be configured as different architectures, by selecting a system having an architecture in which low cost I / O devices can be used as the host computer, A low-cost complex computer system can be provided.

(4) Dedicated I / O device for guest computer 300
Input / output instruction execution operation to the device 360 Next, from the guest computer 300 to the guest dedicated I / O device 3
The operation when an input / output command for 60 is executed will be described. This is based on the above 1. In the input / output instruction execution operation of the guest computer 300 described in 1., the execution unit 3
22 is based on the I / O device address information included in the input / output command and the identification information of the input / output identification table 323.
This is processing when it is determined that the input / output instruction received from the instruction decoder 321 is an instruction for the guest dedicated I / O device 360. This determination can be easily made by referring to the identification information shown in FIG. 5, that is, the I / O device address and the input / output device corresponding to the I / O device address.

The execution unit 322 is a guest-only I / O.
If it is determined that the command is for the device 360, a command for starting the input / output processing for the specified input / output device of the guest dedicated I / O device 360 is issued via the unique I / O bus 350. From this point onwards, the original I / O bus 35
Since the input / output processing performed via 0 is accessed in the same processing procedure as the conventional one, detailed description will be omitted.

In the present embodiment, as described above,
The guest computer 300 can identify and specify the transfer partner based on the identification information of the input / output identification table 323. As described above, in the present embodiment, the host I / O device 150 can be shared, but by using the guest dedicated I / O device 360 as the I / O device with a high access frequency in the guest computer 300, It is possible to reduce the load on the host processor 120 and provide a high-performance complex computer system as a whole system.

Further, a special input / output device is provided to the guest exclusive I / O.
By using only the general-purpose I / O device such as a fixed disk device as the host I / O device 150 as the O device 360, the creation of the emulation program 312 is facilitated, and the guest processor 320 has various types because the load is reduced. It is possible to support crossing I / O devices.

(5) Coordination between the operator and the guest computer 300
Communication operation As described in 1 to 3 above, according to the present embodiment, the host I / O device 150 can be shared by the host computer 100 and the guest computer 300, and input / output requests from the guest computer 300 can be performed. It has been found that the data transfer process based on can be realized without using the guest processor 320. Further, from the above 4, it was found that the guest computer 300 can selectively use a shared input / output device and a dedicated input / output device.

Further, in the present embodiment, the guest main storage device 310 of the guest computer 300 and the guest control device 33 are connected to the terminal 154 connected to the host computer 100 side.
One of the characteristics is that the setting contents of 0 can be referred to.

15 and 16 are diagrams showing an internal processing flow when the interface processing between the operator and the guest computer 300 is performed in the composite computer system according to the present embodiment, and FIG. 16 is shown in FIG. Next, a communication operation required between the operator of the complex computer system and the guest computer 300 will be described with reference to FIGS.

As an example of the operation instructed by the operator for the guest computer 300, initialization of the guest computer 300, start / stop of instruction execution of the guest computer 300, display / change of contents of the guest main storage device 310, guest processor The contents of registers in 320 are displayed and the contents are changed. Here, the communication operation between the operator and the guest computer 300 will be described by taking the content display operation of the guest main storage device 310 by the guest processor 320 as an example.

First, the operator displays the contents of the address designated by the guest main storage device 310 on the host computer 100 via the terminal 154, which is an input / output device sharing the operator interface among the host I / O devices 150. Give instructions to. Then, the operator interface control program 114 for the guest computer 300 operating on the host OS 111 receives the instruction from the operator via the host OS 111. Then, the operator interface control program 114 recognizes that the instruction content from the operator is interpreted, the content of the guest main storage device 310 is read, and the result is displayed on the terminal 154. Then, the operator interface control program 114 requests the guest computer 300 to perform a process of reading the contents of the guest main storage device 310, so that the inter-computer communication storage area 3
A code corresponding to the read processing of the guest main memory device 310 is set in HFACTOR as an interrupt factor from the host computer 100 in 15 to the guest computer 300. Further, the operator interface control program 114
Sets the address information in the guest main storage device 310 to be read in HDATA1 in the inter-computer communication storage area 315. The data to be read is the content of the guest main storage device 310 or the like as described above, and its storage location, that is, the storage address of the data is known. This storage address is set as address information. Then, the operator interface processing interrupt request to the guest computer 300 is transmitted by setting the OPI bit of the interrupt reception register 335 in the guest controller 330 via the guest computer driver 112 and the system bus 130. Operator interface control program 114
Waits for the operator interface interrupt processing by the guest computer 300 to end by polling the contents of HTERM in the inter-computer communication storage area 315.

When the OPI bit of the interrupt reception register 335 is set, the guest controller 330 makes an interrupt request to the guest processor 320. Then, when the guest processor 320 becomes ready to accept the interrupt request, the guest processor 320 starts the interrupt processing. The guest processor 320, which has started the interrupt processing, first receives the guest control device 33.
The interrupt reception register 335 is read from 0. This read operation clears the interrupt reception register 335. Since the OPI bit included in the read content is set, the guest processor 320 recognizes that it is an operator interface processing interrupt request. Here, the execution unit 322 of the guest processor 320
Performs a predetermined process of entering an emulation execution state and activating an emulation program 312 that executes an operator interface interrupt process.

The emulation program 312 for performing the operator interface interrupt processing reads HFACTOR in the inter-computer communication storage area 315 and reads the data from the host computer 100 to the guest main storage device 310 from the detailed factor information of the operator interface interrupt. Recognize that. Next, the emulation program 312 uses the H in the inter-computer communication storage area 315.
The contents of DATA1 are read to know the address in the guest main storage device 310 designated by the host computer 100. Then, the emulation program 312 uses the address of the designated guest main memory device 310 to generate the H
The data is read from the guest main storage device 310 according to the access information designated by the FACTOR, and the result is HDAT.
Set to A2. Finally, the emulation program 312 sets the exit code to HTERM and then
Exit the operator interface interrupt processing and exit from the simulation execution state.

When the data indicating the end of processing is set in the HTERM, the operator interface control program 114 polling the HTERM causes the guest computer 3
It is detected that the operator interface interrupt processing at 00 is completed. Then, the operator interface control program 114 clears HTERM after reading the contents of HTERM and HDATA2 and checking the end state of the operator interface interrupt processing in the guest computer 300 set by the emulation program 312. Next, the operator interface control program 114 outputs the read value of HDATA2 to the host I / O device 150, particularly here the terminal 154, via the host OS 111 to instruct the guest main storage device 310 by the operator. Display the contents for the address. Then, the operator interface control program 114 causes the guest computer 300 instructed by the operator.
Complete the communication process with.

As described above, according to this embodiment, since the contents set in the guest computer 300 can be referred to from the terminal 154 connected to the host computer 100 side, a separate operation can be performed on the guest computer 300 side. There is no need to connect the terminal used by staff. That is, the guest computer 30
0, the operator interface operating function is set to the host computer terminal (operator interface input / output device) 154.
, The operator interface input / output device dedicated to the guest computer 300 is unnecessary, and the system can be realized at low cost.

(6) Summary Up to now, the main operation of the composite computer system in this embodiment, the input / output instruction execution operation of the guest computer 300, the data transfer operation designated by the input / output instruction of the guest computer 300, and the guest Input / output end interrupt processing operation of the computer 300, dedicated I / O device 360 of the guest computer 300
I / O command execution operation and communication operation between the operator and the guest computer were explained. Of the above five types of operations, the dedicated I / O of the guest computer 300
Except for the I / O command execution operation to the O device 360, the I / O device control program 113 or the operator interface control program 114 on the host computer 100 side and the emulation program 312 on the guest computer 300 side communicate with each other. While being executed. Here, since the host OS 111 has a preemptive multitask processing function, the I / O device control program 113, the operator interface control program 114, and the application program 115.
In both cases, execution is forcibly switched according to the task switch cycle of the host OS 111. That is, the guest computer 300 in the host computer 100
The input / output command processing, the input / output data operation, the input / output end interrupt processing, and the communication processing from the operator to the guest computer 300 are executed in a time-shared manner, so that the guest computer 300 and the operator apparently real-time. Processing is being performed. Furthermore,
In the host computer 100, the application program 115 is similarly time-shared and executed. Therefore, for example, when a distributed computer system in which the host computer 100 is a server and the guest computer 300 is a client is constructed, the client computer operates as a server. A service request issued to the host computer 10
It is possible to configure a client / server system in which processing is performed by operating a server application in 0.

By the way, in the present embodiment, the host computer means one to a plurality of computers which can serve as hosts in a system constructed by a plurality of computers.
A guest computer is a computer that is not a host computer, and unless otherwise specified, a general independent computer is constructed. Therefore, contrary to the above, even in the case of a distributed computer system configuration in which the host computer 100 is a client and the guest computer 300 is a server, the guest application program 115 operating on the host computer 100 causes the guest computer 300 to be a server. It is also possible to configure a client / server system in which a service request issued to the client computer 300 is processed by the application program 313 on the guest computer 300.

In particular, according to this embodiment, the host computer 100 and the guest computer 300 are connected to the system bus 130.
By connecting with, the client / server can be integrally realized, and the same system can be constructed at a lower cost than a client / server system constructed by two completely independent computer systems. Furthermore,
It is possible to provide a system that is faster than a system constructed by connecting via a LAN or the like.

On the other hand, the I / O independent of the guest computer 300
Even when the O computer and the operator interface input / output device are connected to form a complete computer system with only the guest computer 300, the guest computer 300 executes the computer system as described in the operation description of the above embodiment. The input / output command processing, the input / output end interrupt, and the operator interface interrupt processing are all performed by the guest main storage device 31.
The guest processor 320 is arranged in a specific area within 0.
The emulation program 312 is executed by a program using the machine language instruction set of. Therefore, according to the present embodiment, by simply replacing the processing part due to the change of the I / O device configuration or the configuration of the operator interface input / output device with the revised emulation program 312, the machine of the guest processor 320 can be obtained. The same functions as the guest computer 300 described above can be realized without changing the word instruction set and hardware, and the guest OS 311, the channel program 314, and the application program 313.

Further, from the above description of the operation, the host computer 100 and the guest computer 30 according to the present embodiment.
It is self-evident that between 0 and between the host processor 120 and the guest processor 320, there is no architectural dependency relationship with each other except for the connection to the system bus 130.

In this embodiment, the host processor 12
Although the operation of the composite computer system having a single processor configuration for both 0 and guest processor 320 has been described, the system bus 130 is also applicable to a multiprocessor system configuration including a plurality of host processors 120 or a plurality of guest processors 320.
It can be easily applied by connecting the host computer and the guest computer having the above-mentioned configuration to and having the necessary components in a superposed manner.

In this embodiment, as shown in FIGS. 1 and 3, the above-mentioned "(4) I / O command execution operation of the guest computer 300 to the dedicated I / O device 360" is described. In addition, the guest computer 300 has its own I / O bus 35
0 and guest-dedicated I / O device 360 are provided, but these configurations may be omitted in other operations.

Installation in multi-function peripheral computing system
/ Uninstallation Method Next, an installation and uninstallation method according to the present embodiment will be described. What is characteristic of the present embodiment is that it can be installed by using a single installer and a single installation medium, that is, in the configuration shown in FIG.
This means that the host computer 100 side can install / uninstall on the guest computer 300.

FIG. 17 is a schematic diagram showing the installation and uninstallation work. In this embodiment, the operating system 1 of the host computer 100
It is assumed that 11 is already installed. FIG.
7, the installer 21 is installed in the installation medium 200 such as a floppy disk or a CD-ROM.
1. In addition to the uninstaller 212, a guest computer driver 112 that is a guest computer control program, I / O
It includes a device control program 113, an operator interface control program 114, a host application program 115 other than that, and a file 210 in which the guest OS 311 and the guest application program 313 are directly mapped by the image of the physical disk. The HDD 151 is a fixed disk shared by the complex computer system shown in FIG. 3, which is an installation destination. An arrow A represents a file copy in the installation work, and an arrow B represents a file deletion in the uninstall work. Host OS before installation
Only 111 is stored in the HDD 151. Depending on the installation work, the guest computer driver 112, I / O
The O-device control program 113, the operator interface control program 114, the other host application programs 115, and the file 210 that is mapped as it is as the image of the physical fixed disk device is HD.
It is copied to D151.

From the perspective of the guest OS 311, the HDD 15
One file 210 in 1 is recognized as one fixed disk device. On the other hand, host OS1
11, the guest OS 311 and the guest application program 313 are combined into a single file 210.
By storing it in the installation medium 200 as
The installation work on the guest computer 300 as well as the host computer 100 can be performed only by the installer 211 operating on the host OS 111.

At the time of installation, the host OS 111 previously stored in the HDD 151 is loaded into the host main storage device 110 and operated. Next, installer 2
Similarly, 11 is loaded into the host main memory 110 and operated. The installer 211 is the installation medium 20.
As a software for the host computer 100 from 0, a guest computer driver 112, an I / O device control program 113, an operator interface control program 114,
The other host application program 115 and the file 210, which is software for the guest computer 300, are copied to the shared HDD 151. As described above, when the guest OS 311 is installed, the guest OS 31 is operated without operating the guest computer 300 at all.
1 can be installed. Guest OS 311
For the information of the host I / O device 150 connected to the composite computer system, which is necessary for the operation of the guest OS 311, the I / O device control program 113 and the guest computer controlled by the host OS 111 after the guest OS 311 operates. The guest OS 311 recognizes through the driver 112. The host I / O devices 150 of the multi-function computer are all controlled by the host OS 111, and the I / O devices 150 are controlled based on the information of the host I / O devices 150 recognized by the host OS 111.
Since the I / O device control program 113 and the guest computer driver 112 operate, the guest OS 311 can be installed without notifying the guest OS 311 of the I / O device information.

Uninstallation is performed on the HDD of the composite computer.
This is done by deleting all the information for the guest computer 300 from 151. The information for guest computer 300 is
Guest computer driver 112, which is an application program on the host computer 100, I / O device control program 113, operator interface control program 1
14, file 210, and system information for the guest computer 300. The installer 211 not only copies files at the time of installation, but also writes the system information for the guest computer 300 in a specific area of the HDD 151. The system information for the guest computer 300 is composed of the information of the guest computer control program and the information of the host I / O device 150 as shown in FIGS. 18 and 19, and the guest computer control program is the guest computer 3
During operation of 00, the system information is referred to and the operation is performed according to the constraint conditions such as the path name.

When the uninstaller 212 stored in the installation medium 200 is loaded into the host main memory 110 and operated, the system information for the guest computer 300 is first referenced. The path of the guest computer control program is checked from the information of the guest computer control program, and all the guest computer control programs are deleted. Next, the path of the file corresponding to the fixed disk of the guest computer 300 is checked from the information of the host I / O device 150, and all are deleted. When the file has been deleted, all the system information for the guest computer 300 is deleted.

As described above, the uninstaller 212 of the composite computer is used by the guest computer 300 having a different architecture.
Software and the software for the host computer 100 can be quickly uninstalled in one operation.

By the way, FIG. 20 shows a shared HDD 151.
FIG. 5 is a diagram showing the details of the file 210 stored in the HDD 210. The file 210 is copied from the installation medium 200 to the HDD 151 by the installer 211, and the HDD of the guest computer 300 is read by the input / output map table 116 described above. Is assigned to. This file 210 is a normal file when viewed from the host OS 111, and the host OS 111 is at the top.
Has header information 213 for. Next, the host computer 10
Header information 214 for the installer 211 so that the installer 211 and the I / O device control program 113, which are application programs on the computer 0, recognize the file 210 as a file for the guest computer 300.
have. The physical area after that is the guest computer 30.
0 is a portion recognized as an HDD through the input / output map table 116. Guest OS 311 in the top area
Is stored, and the guest application program 313 is stored in the area after that. This file 210 is created as follows and the installation medium 20
0 is stored.

First, an empty file of the size required for the HDD of the guest computer 300 is created on the host computer 100. As a result, the host computer 100 writes the host OS header information 213 in the OS management area of this file. Next, at the beginning of the user area of this empty file, the installer 211 and the I / O device control program 113
The header information 214 for the installer is written. This work can be performed by directly accessing an empty file using the application program 115 on the host computer 100. Finally, the contents of the HDD 361 of the guest computer 300 that is operating independently instead of the complex computer are written as a physical image, one byte at a time immediately after the header information 214 for the installer in the empty file. The data read from the HDD 361 is the guest OS 311 and the guest application program 313.
It is. The contents of the HDD 361 of the guest computer 300 are
For example, you can copy as follows. First, all the contents of the HDD 361 of the guest computer 300 are temporarily stored in a medium (for example, a tape device) of a removable large-scale storage device that can be physically shared by the host computer 100 and the guest computer 300 (the logical format need not be the same). To copy. Next, the medium of the large-scale storage device is brought to the host computer 100, and the contents are transferred to the host computer 10.
Physically read byte by byte using the application program 115 on 0 and write byte by byte to an empty file. The created file is the installation medium 20
Copy to 0. In this way, the installation medium 2
00 is generated.

FIG. 21 shows an installer 211 or an uninstaller 212, a guest OS 311 and a guest computer driver 112 as a guest computer control program.
It shows a communication path with the I / O device control program 113 and the operator interface control program 114. The guest computer driver 112 and the operator interface control program 114 directly communicate with the installer 211 and the uninstaller 212. Since all of these are application programs on the host OS 111, it is possible to communicate via the host OS 111. Guest computer driver 11
2 is an inter-computer communication storage area 315 and a guest control device 3
30 is used to communicate with the guest OS 311. On the other hand, the operator interface control program 114 has all the I / O device control programs 113 (113a, 113b, 113c), so that all the I / O device control programs 113 and the host OS 1
Communication is performed via 11.

FIG. 22 shows a flowchart in which the installer 211 and the uninstaller 212 stop the system using the communication path of FIG. Installer 21
1 has a monitoring means for communicating with the operator interface control program 114 to check whether it is in operation, and a stopping means for stopping the operator interface control program 114 if it is in operation. The operator interface control program 114 is the I / O device control program 11
3 for communicating with the I / O device control program 113 to check whether the I / O device control program 113 is operating, and a stopping unit for stopping the I / O device control program 113 when the I / O device control program 113 is operating. Further, the I / O device control program 113 has a monitoring means for communicating with the operator interface control program 114 and checking whether the operator interface control program 114 is operating.
3 Start-up, operator interface control program 11
4 is assumed to be working. That is, when the operator interface control program 114 is not operating, the I / O device control program 113 is disabled.

As a result, the installer 211 first
If the operator interface control program 114 is operating, and if it is operating, the operator interface control program 114 checks whether the I / O device control program 113 is operating. If it is operating, the stop means is used to stop the I / O device control program 113. Next, the installer operates the operator interface control program 1
14 is stopped using a stop means.

Similarly, the installer 211 communicates with the guest computer driver 112 to monitor whether it is operating or not, and the guest computer driver 11 if it is operating.
2 has a stopping means for stopping. The guest computer driver 112 communicates with the guest OS 311 to make a guest O
It has a monitoring means for checking whether or not S311 is operating, and a stopping means for stopping the guest OS 311 if it is operating. In addition, the guest OS 311 has a monitoring unit that communicates with the guest computer driver 112 to check whether the guest computer driver 112 is operating. When the guest OS 311 is activated, it is assumed that the guest computer driver 112 is operating. That is, when the guest computer driver 112 is not operating, the guest OS 311 is disabled.

As a result, the installer 211 first
It is checked whether the guest computer driver 112 is operating, and if it is operating, the guest computer driver 112 is installed in the guest OS 31.
Check if 1 is running. If it is operating, the guest OS 311 is stopped by using the stopping means. Next, the installer 211 stops the guest computer driver 112 using the stopping means. By using these stopping means, at the time of installation (reinstallation or version upgrade)
Even when the guest computer control program or the guest OS 311 is operating at the time of uninstallation, even if the guest computer control program and the guest OS 311 are not stopped by a manual operation, the installer or the uninstaller itself can automatically stop them before performing the installation or the uninstallation.

[0152]

According to the present invention, the input / output device connected to the system bus of the host computer can be shared by the guest computer, and the input / output processing for the input / output device performed by the guest computer can be performed. This can be done without using the guest processor of the guest computer.

Further, since the guest computer, the host computer and the input / output device are connected by the system bus of the host computer, a higher performance system can be constructed as compared with the system which is conventionally communicated via the network. It is possible to

Furthermore, since the host computer and the guest computer can be configured as different architectures,
By selecting a system with an architecture that can use low-cost I / O devices as the host computer,
It is possible to provide a lower cost composite computer system.

Since the input / output identification table for identifying the input / output device is provided, the guest computer can identify and specify the transfer partner based on the identification information of the input / output identification table. Therefore, the guest computer dedicated input / output device and the I / O device connected to the host computer can be used together. Therefore, by providing a file that is frequently accessed in the guest computer in the input / output device dedicated to the guest computer, it is possible to reduce the load on the host processor and provide a high-performance complex computer system as a whole system. .

Since the guest computer is provided with the emulation means, it is possible to actually execute the input / output instructions executed on the guest processor, and it is not necessary to change the machine language instruction set and hardware of the guest processor. .

Further, the execution unit executes the machine language instruction based on the execution instruction contents supplied from the instruction decoder to execute emulation, input / output processing, or interrupt processing when an interrupt occurs. can do.

Since the guest status register for holding the main cause of interrupt to the host computer such as the interrupt processing request from the emulation means is provided, the host processor can immediately know that the interrupt has occurred in the host computer. It is possible to know the main cause of the interruption.

Since the interrupt request register for holding the interrupt processing request from the guest computer to the host computer is provided, the host processor can immediately know that an interrupt has occurred in the host computer.

Since the input / output map table is provided, the guest computer control means can specify the transfer source and the transfer destination of the data transferred between the host computer and the guest computer in the input / output processing. Become.

Since the guest computer control means associates the physical position of the virtual fixed disk device managed by the guest computer with one file managed by the host OS, the input / output device control means: The file system provided by the host computer can be used as it is.

Further, since the byte order conversion mechanism for converting the arrangement of the data handled by the host computer and the guest computer is provided, even if each computer handles the data of different formats, the data is transferred between the host computer and the guest computer. It is possible to perform bidirectional data transfer.

Since the interrupt reception register for receiving the interrupt request from the host computer to the guest processor is provided, it is possible to notify the guest processor of the presence or absence of the interrupt request. In particular, since it is possible to hold bit information in the interrupt reception register so that it can be discriminated whether it is an interrupt due to the end of I / O execution from the host computer or an interrupt due to an operator's instruction,
The interrupt request source can be notified to the guest processor.

Since the operator emulation means is provided, it is possible to refer to the setting contents of the guest main storage means and guest control means of the guest computer by setting the address information from the terminal connected to the host computer. Becomes As a result, since the terminal connected to the host computer can be shared with the guest computer, it is not necessary to separately connect the terminal to the guest computer side. Therefore, the system can be realized at low cost.

According to the install / uninstall method of the present invention, the software operating on the second computer is recognized as the file of the first computer as the first header information and the file of the second computer. Since it is configured to have the second header information to be recognized,
Installation can be performed efficiently by using a single installer and a single installation medium.

Further, in the composite computer system composed of the host computer and the guest computer, the target file is deleted by referring to the system information, so that the installation / uninstallation work can be performed efficiently. .

Furthermore, since the installer itself is configured to perform the installation after the function of the software is stopped, the installation work can be performed quickly. Further, since the uninstaller itself is configured to perform the uninstall after the software function is stopped, the uninstall work can be performed quickly.

[Brief description of drawings]

FIG. 1 is a schematic block configuration diagram showing an embodiment of a complex computer system according to the present invention.

FIG. 2 is a diagram showing an example of a software configuration executed by each computer according to the present embodiment.

FIG. 3 is a system configuration diagram for explaining an operation of a hardware and software configuration example of the multi-function computer system according to the present embodiment.

FIG. 4 is a diagram showing an internal configuration example of an inter-computer communication storage area in the present embodiment.

FIG. 5 is a diagram showing a configuration example of an input / output identification table in the present embodiment.

FIG. 6 is a diagram showing an internal configuration example of a guest status register in the present embodiment.

FIG. 7 is a diagram showing an internal configuration example of an interrupt reception register according to the present embodiment.

FIG. 8 is a diagram showing a configuration example of an input / output map table in the present embodiment.

FIG. 9 is a diagram showing a configuration example of a byte order conversion mechanism in the present embodiment.

FIG. 10 is a diagram showing an operation when mapping an input / output operation for a fixed disk device designated by an input / output instruction executed in a guest computer according to this embodiment to a file on a host computer.

FIG. 11 is a diagram showing an internal processing flow when an input / output instruction is executed by the guest computer according to the present embodiment.

FIG. 12 is a diagram showing an internal processing flow when executing an input / output instruction by the guest computer according to the present embodiment, and is a continuation of FIG. 11.

FIG. 13 is a diagram showing an internal processing flow at the time of executing an input / output end interrupt processing which is generated at the time of completion of the input / output processing by the guest computer according to the present embodiment.

FIG. 14 is a diagram showing an internal processing flow at the time of executing an input / output end interrupt process that occurs at the completion of the input / output process by the guest computer according to the present embodiment;
FIG. 14 is a continuation of FIG. 13.

FIG. 15 is a diagram showing an internal processing flow when performing interface processing between an operator and a guest computer in the present embodiment.

FIG. 16 is a diagram showing an internal processing flow when performing interface processing between an operator and a guest computer in the present embodiment, and is a continuation of FIG. 15.

FIG. 17 is a schematic diagram showing installation and uninstallation work according to the present embodiment.

FIG. 18 is a diagram showing an example of contents of system information used in the present embodiment.

FIG. 19 is a diagram showing an example of contents of system information used in the present embodiment.

FIG. 20 is a diagram showing the contents of a file used for installing a guest computer according to the present embodiment.

FIG. 21 is a communication path diagram of the installer / uninstaller in the present embodiment.

FIG. 22 is a flowchart showing installer / uninstaller system stop processing in the present embodiment.

FIG. 23 is a diagram showing a configuration example of a conventional input / output device access control system.

FIG. 24 is a configuration diagram showing a conventional client / server system.

FIG. 25 is a schematic diagram showing an installation method and an uninstallation method in a client / server system of a conventional example.

FIG. 26 is a configuration diagram used to describe a conventional installation method.

[Explanation of symbols]

100 host computer, 110 host main memory, 1
11 host operating system (OS), 11
2 guest computer driver, 113 I / O device control program, 114 operator interface control program, 115 application program, 116 input / output map table, 120 host processor, 13
0 system bus, 140 host controller, 150
Host I / O device, 151 Fixed disk device, 152
Magnetic tape device, 153 local area network control device, 154 operator I / F device (terminal), 20
0 installation medium, 210 file, 211 installer, 212 uninstaller, 213 host OS header information, 214 installer header information, 300 guest computer, 310 guest main storage device, 311 guest operating system (O
S), 312 emulation program, 313
Application program, 314 channel program, 315 inter-computer communication storage area, 320 guest processor, 321 instruction decoder, 322 execution unit, 323 input / output identification table, 330 guest control device, 331 system bus I / F control unit, 332
Byte order conversion mechanism, 333 interrupt request register,
334 Guest status register, 335 Interrupt reception register, 336, 337 Multiplexer, 33
8,339 buffer, 340 guest main memory bus, 35
0 I / O bus, 360 guest dedicated input / output (I / O)
apparatus.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoko Fujiwara 2-3-3 Marunouchi, Chiyoda-ku, Tokyo Sanryo Electric Co., Ltd.

Claims (20)

[Claims] 1. A composite computer system comprising a host computer and a guest computer, wherein the host computer is connected to a system processor and a host processor on which an operating system and application programs having a preemptive multitask processing function operate. A group of I / O devices, I / O device control means provided for each of the I / O devices for accessing the I / O devices, and performing data transfer between the guest computers, and on the system bus. Host control means for performing data transfer control and interrupt control for the host processor, and collectively controlling the guest computer in the host computer by regarding the guest computer as one input / output device connected to the system bus. Guest computer system A guest processor on which an operating system and an application program independent of the host processor operate, and an emulation instruction by the guest processor. An emulation unit, a guest control unit that connects the system bus and controls data transfer with the host computer and interrupt control for the guest processor, and is accessible from the host computer and exchanges various information with each other. A guest main storage unit including an inter-computer communication storage area, and accessing the input / output device without using the guest processor. 2. The guest computer comprises a group of guest-dedicated input / output devices connected to a dedicated I / O bus and accessible only by the guest computer, and an input / output device for identifying an input / output device designated by an input / output command. An input / output identification table that holds output device identification information, and the guest processor further identifies the input / output device that is the target of the input / output instruction using the input / output identification table. The complex computer system according to item 1. 3. The address of the input / output device and the channel program based on a channel program executed by the guest processor when the guest processor receives an input / output command for any input / output device of the host computer. I / O request information including an address is set in the inter-computer communication storage area, and the guest computer control means executes an I / O command for the specified I / O device based on the I / O request information. 3. The complex computer system according to claim 1 or 2. 4. The guest processor includes: an instruction decoder that interprets the created channel program; and an execution unit that executes a predetermined process based on execution instruction content in machine language, and the execution unit is 3. The composite computer system according to claim 1, wherein processing is performed based on the interpretation of the instruction decoder. 5. The guest control means has a guest status register for holding a state of the guest computer and a main cause of an interrupt from the guest computer to the host computer. Complex computer system. 6. The complex computer system according to claim 5, wherein the guest status register holds bit information indicating that the emulation means makes an interrupt processing request to the host computer. 7. The guest control unit has an interrupt request register that holds an interrupt processing request made from the guest computer to the host computer, and the host control unit writes the interrupt request register to write the interrupt request to the host computer. 4. The complex computer system according to claim 3, wherein an interrupt request from the guest computer is recognized. 8. The guest computer control means uses an input / output map table that correlates an input / output request from the guest computer with any of the input / output devices, and corrects the mapping to the specified input / output device. 4. The complex computer system according to claim 3, wherein 9. The input / output device control means performs data transfer between the input / output device and the guest main memory means based on an input / output request requested by the guest computer according to an instruction from the guest computer control means. 3. The composite computer system according to claim 1, wherein the file system provided by the host computer is used as it is. 10. A byte order conversion mechanism for converting the arrangement order of transfer data between the host computer and the guest computer and byte data handled by the host computer or the guest computer.
Alternatively, the composite computer system according to any one of 2 and 3. 11. The composite computer system according to claim 1, wherein the guest control unit has an interrupt reception register that receives an interrupt request from the host computer to the guest processor. 12. The interrupt reception register holds bit information for holding an interrupt request from the host computer upon completion of input / output execution, and the guest processor writes the bit information to input / output an instruction to the input / output device. 12. The complex computer system according to claim 11, wherein the end of the execution of is recognized. 13. The input / output device includes a terminal operated by an operator, the guest computer has an operator emulation means for realizing an operator interface function, and the terminal operates on data in the guest computer from the terminal. 3. The multi-function computer system according to claim 1, wherein access is performed. 14. The input / output control means corresponding to the terminal sets address information of data in the guest computer to be accessed as instruction contents in the inter-computer communication storage area, and the operator emulation means, 14. The processing according to the set address information is performed.
The described complex computer system. 15. The interrupt reception register holds bit information for holding an interrupt request instructed by an operator from the host computer, and the guest processor writes the bit information to the terminal for the guest computer. 12. The multi-function computer system according to claim 11, wherein the multi-function computer system recognizes that the access is from a user. 16. A composite computer system comprising a first computer and a second computer, wherein an operating system of the first computer is stored in a main memory of the first computer and operates, and An installer operating in the operating system of the computer is stored in the main storage device of the first computer and operates, and the installer operates in the first computer stored in an installation medium connected to the first computer by the installer. And a software operating on the second computer are stored in a disk device shared by the first computer and the second computer, and the software operating on the second computer is the first computer. Header information that is recognized as a second file and that is recognized as a second computer file How characterized in that it comprises a second header information. 17. The complex computer system according to claim 1, wherein the operating system of the host processor operates, an installer operating in the operating system of the host processor operates, and the host processor accesses the installer. Stored in the installation medium, the software operating on the host processor and the software operating on the guest processor are stored in the input / output device, and the software operating on the guest processor is a host. An installation method comprising: first header information recognized as a file of a processor and second header information recognized as a file of a guest processor. 18. A step of stopping the operation of the input / output device control means, a step of stopping the operation of an operating system independent of the host processor, a step of stopping the operation of the guest computer control means, and an installation step. 18. The installation method according to claim 17, further comprising the step of executing installation after the termination process of each step by the installer to be executed is completed. 19. The complex computer system according to claim 1, wherein the step of referring to system information composed of information regarding the input / output device, the input / output device control means, and the guest computer control means, the input / output device Retrieving information about the control means and the guest computer control means and deleting the target file; retrieving information about the input / output device and deleting the file corresponding to the guest dedicated input / output device; An uninstall method comprising: deleting information. 20. A step of stopping the operation of the input / output device control means, a step of stopping the operation of an operating system independent of the host processor, a step of stopping the operation of the guest computer control means, and an uninstallation. 20. The uninstall method according to claim 19, further comprising the step of executing uninstall after the termination processing of each step by the uninstaller for executing.