JPH02270024A - System load processing system - Google Patents

Abstract

PURPOSE:To prevent the failure of system load processing when an architecture is changed by selecting the nucleus program of an operating system corresponding to a selected architecture out of plural operating systems and loading the selected program into a main storage. CONSTITUTION:When the start of a system load process is instructed from a system console 1, a 1st program 6a is loaded into an area 5a of a main storage 5 from an external storage 6. Then the architecture of a computer is decided when the program 6a is carried out. Thus a nucleus program 6b or 6c of an operating system is selected and loaded into an area 5b of the storage 5 in accordance with the decided architecture. Thus it is possible to prevent the failure of the system load processing due to the discordance despite the change of the architecture.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a loading processing method for an operating system in a computer system that operates on a plurality of architectures by changing microprograms.

[Prior Art] FIG. 3 is a block diagram showing a conventional system load processing method. FIG. 3 shows a conventional system load processing method in a computer system in which a plurality of architectures can be selected by changing the microprogram.

In the figure, l is a system console, 2 is a system control device, 3 is a central processing unit, 3a is a control storage unit in the central processing unit 3, 4 is an external storage device that stores microprograms, 5 is a main storage device, 5a , 5b are areas of the main storage device 5, 6 and 7 are external storage devices, 6a and 7a are first programs, and 6b and 7b are core programs of the operating system.

Next, the operation of the conventional system load processing method described above will be explained. When an architecture is selected through input to the system console 1, the external storage device 4 is stored in the control storage section 3a in the central processing unit 3 through the system control device 2.
Load the microprogram corresponding to the selected architecture. Generally, in order to operate computers with different architectures, it is necessary to prepare operating systems corresponding to each architecture. Therefore, in this conventional example, the operating system corresponding to the architecture is stored in separate external storage devices 6,
I am trying to store it in 7.

When loading the system, it is necessary to select from the system console 1 the external storage device 6 containing the operating system corresponding to the selected architecture and start processing.

FIG. 4 is a flowchart showing the operation in the system load processing method of FIG. In the figure, 8 and 9 are steps showing the processing process. For example, external storage device 6
is selected, the first program 6a is loaded from the external storage device 6 into the area 5a of the main storage device 5 (step 8). Next, by executing the first program 6a, the core program 6b of the operating system is loaded from the external storage device 6 into the area 5b of the main storage device 5 (step 9).

Now, there are several precedents for selecting and loading multiple operating systems.

In particular, Japanese Patent Application Laid-Open No. 62-295154 discloses a method of selecting and loading a plurality of operating systems using a switch. Also, Unexamined Japanese Patent Publication No. 6
No. 3-196963 discloses a method in which a load table indicating a program to be loaded is first selected, and then a group of programs is loaded in accordance with the corresponding load table.

Each of the above preceding matrices requires manual means such as a switch as a means for selecting an operating system. Further, it is assumed that all loaded programs can be operated on the processing device.

On the other hand, when a processing device has a plurality of operating modes, a method of loading an operating system corresponding to each operating mode is disclosed in Japanese Patent Publication No. 62-278657.

[Problems to be Solved by the Invention] In the conventional system load processing method as described above, when the architecture of a computer is changed due to a change in a microprogram, multiple external storage devices 6 are required for multiple operating systems. , 7 are required, and the operating system to be loaded into the main storage device 5 must be selected from the external storage devices 6 and 7.

Furthermore, in each of the preceding matrices (Japanese Unexamined Patent Publications No. 62-295154 and No. 63-196963), when the architecture of the computer is changed, the operating system or program to be loaded becomes inoperable. The problem was that the situation was not taken into account.

Furthermore, in the other preceding matrix (Japanese Patent Publication No. 62-278657), a processing device corresponding to the selected operating system is selected. It is not intended to automatically select. Another problem is that it requires means for storing processing device selection information in an external medium and reading it out, as well as means for switching between processing devices.

This invention was made to solve the above-mentioned problems, and allows multiple operating systems to coexist on one external storage device. can automatically select and load the corresponding operating system without specifically specifying the operating system to be loaded into main memory, and can also load the operating system corresponding to the already determined architecture. Due to architecture and operating system incompatibility,
An object of the present invention is to obtain a system load processing method that can prevent a situation where system load processing fails.

[Means for Solving the Problems] A system load processing method according to the present invention allows a plurality of operating systems to coexist in one external storage device, and performs system load processing by loading a first program and loading an operating system. The loading of the core program is divided into two stages, the architecture of the computer is determined in the first execution stage of the first program, and the core program of the operating system corresponding to the selected architecture is selected in the second execution stage. It is then loaded onto the main memory.

[Operations] The system load processing method in this invention involves placing multiple operating systems coexisting in one external storage device, and having the first program determine the architecture of the computer and load the selected architecture. A core program of a corresponding operating system is selected from a plurality of operating systems and loaded onto the main memory.

[Embodiment] FIG. 1 is a block diagram showing a system load processing method according to an embodiment of the present invention. In the figure, l is a system console, 2 is a system control device, 3 is a central processing unit, 3a is a control storage unit in the central processing unit 3, 4 is an external storage device that stores microprograms, 5 is a main storage device,
5a and 5b are areas of the main storage device 5; 6 is an external storage device;
6a is a first program, and 6b and 6c are core programs of the operating system.

Next, the operation of the system load processing method according to the embodiment of the present invention will be explained. It is assumed that the architecture of the computer is determined by loading a microprogram into the control storage section 3a of the central processing unit 3. When the system console 1 instructs the start of resystem loading processing, the loading processing from the external storage device 6 to the main storage device 5 is performed. Here, the external storage device 6 has a first
There are a program 6a and operating system core programs 6b and 6c, each of which corresponds to a different architecture.

FIG. 2 is a flowchart showing the operation in the system load processing method of FIG. In the figure, 10 to 13
are steps showing the processing process.

When the system console 1 instructs to start the system loading process, the first program 6a is loaded from the external storage device 6 onto the area 5a of the main storage device 5 (step 10). Next, when the first program 6a is executed, the architecture of the computer is first determined (step 11). Next, it is selected which of the core programs 6b and 60 of the operating system is to be loaded onto the area 5b of the main storage device 5 in accordance with the determined architecture. Depending on this selection, one of the core programs 6b and 6C of the operating system is loaded onto the area 5b of the main storage device 5 (step 12.13).

[Effects of the Invention] As described above, according to the system load processing method of the present invention, multiple operating systems are coexisted in one external storage device, and the first program determines the architecture of the computer. Since the core program of the operating system corresponding to the selected architecture is selected from among multiple operating systems and loaded onto the main memory, when the architecture is changed, it is possible to load the main memory from the outside. There is no need to specify the operating system to be loaded on the device; the corresponding operating system can be automatically selected and loaded, and multiple operating systems can coexist on an external storage device without the need for special devices. Moreover, it has excellent effects such as being able to prevent a situation where the system load processing fails due to incompatibility between the architecture and the operating system.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing a system load processing method according to an embodiment of the present invention, Fig. 2 is a flowchart showing the operation of the system load processing method shown in Fig. 1, and Fig. 3 shows a conventional system load processing method. Block diagram, 4th
This figure is a flowchart showing the operation in the system load processing method of FIG. 3. In the figure, 1... system console, 2... system control device, 3... central processing unit, 3a... control storage unit, 4... external storage device, 5... main storage device, 5a, 5b...areas of main storage device 5, 6, 7...
External storage device, 6a,? a... first program, 6
b. 6c, 7b... Core program, 8-13... Steps. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] In a computer system in which a plurality of architectures are realized by changing a microprogram, a first program is loaded from an external storage device to a main storage device, and the first program loads a core program of an operating system into the main storage device. , coexisting in the external storage device a plurality of core programs of the operating system corresponding to each of the architectures realized by loading the initial microprogram;
A system load processing method characterized in that the first program determines a selected architecture, selects a core program of an operating system corresponding to the selected architecture, and loads it onto the main storage device.