JPH0298767A - Multi-os compatible operating system - Google Patents

Abstract

PURPOSE:To perform the compatible operation of plural operating systems(OS) by one computer system by starting up another OS from one OS. CONSTITUTION:The OS1 is started up by a processor 5(CPU#1), and the OS2 by a processor 7(CPU#2). A memory accessible means 1 permits access from the OS1 to a memory area managed by the OS2 to load the OS2 on a memory 6. A system loading means 2 loads the OS2 and a system resource table 11 on the memory 6. Also, a memory address prohibiting means 3 prohibits the access to the memory area managed by the OS2 by the OS1, and a processor start-up means 4 starts up the CPU#2 by which the OS2 is operated. In such a way, it is possible to perform the compatible operation of the plural operating systems in one computer system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention provides a method for transferring data from one operating system (hereinafter referred to as OS) to another OS in one computer system.
The present invention relates to a method for co-operating multiple OSs by starting the OS.

[Conventional technology]

Conventionally, in one computer system, there are several aS
(If you wanted to run another OS, you had to restart the system.)

[Problem to be solved by the invention] As described above, in conventional computer systems, it is not possible to co-operate multiple OSs, and when running another OS, the system is started with that OS each time. The drawback was that it had to be raised again.

In view of the above drawbacks, one technical object of the present invention is to provide a multi-OS coexistence operation method in which a plurality of OSs coexist in one computer system.

[Means to solve the problem]

According to the present invention, in a computer system in which a plurality of processors exist and peripheral devices connected to the system can be shared and used by the OS running on each processor, the main processor stores the OS running on the slave processor in memory. memory accessible means for making the memory area to be managed by the slave processor accessible for loading into the slave processor;

A system loading means for loading an OS operated by the slave processor into a memory area to be managed by the slave processor, and loading a system resource table storing information regarding peripheral devices connected to the system into the memory area; A memory access prohibiting means for preventing an OS running on a main processor from accessing a memory area to be managed by an OS running on a processor, and a slave processor are activated.

A multi-OS coexistence operation method is obtained, which is characterized by having a processor startup means for starting up the system.

〔Example〕

Below, nine embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, one embodiment of the present invention includes memory access means l, system load means two. Memory access prohibition means 3. Processor 5 (hereinafter referred to as CPU #1), memory 6, processor 7 (hereinafter referred to as CPU 52), system resident system volume 8 (hereinafter referred to as SRV) 9 peripheral device section 9. Memory management table 10. System resource table 1
It is configured from 1, CPU#l is osl, and CPU
4 OS2 runs on #2.

The memory access means 1 enables osl to access the memory area to be managed by the OS 2 in order to load the OS 2 running on the CPU #2 from the system resident volume 8 to the memory 6. , performs the processing shown in FIG. Namely.

According to step 21, 1) the memory end address of the memory management table 10 used by OSL to manage the memory 6;
The memory size is set to the highest address of the memory 6, thereby allowing the OS1 to access the memory area to be managed by the OS2. The memory management table 10 is composed of a memory start address, a memory end address, and a memory size, as shown in FIG.

The system load means 2 loads the OS 2 and the system resource table 11 into the memory 6, and performs the processing shown in FIG. First, by step 31, install the OS
Address to read the header 34 of 2 and load OS2,
Get the size of OS2. Next, in step 32, the OS 2 is loaded onto the memory 6 using the information obtained in step 31. and.

At Stay 7' 33, the system resource table 11 containing information about 9 peripheral devices is loaded onto the memory 6 in order to provide the OS 2 with information about the peripheral devices connected to the system. The header 34 is.

As shown in FIG. 5, the system resource table 11 is composed of a memory load address indicating the location where OS2 is loaded into memory, the size of OS2, the start address of OS2, etc. To.

It consists of the channel and device ID of peripheral devices connected to the system.

As shown in FIG. 7, the memory access inhibiting means 3 returns the memory management table IO updated by the memory access enabling means 1 to the value before the update in step 41. This prevents p and osl from accessing the memory area that should be managed by os2.

The processor starting means 4 starts the CPU '#2 on which the OS 2 operates, with the register set to ink 7 ace, and performs the processing shown in FIG. First, Sten f5
Step 1 sets the channel number of the system resident volume 8 in which the OS 2 is stored in a register, and then in step 52 the size of the memory 6 installed in the system is set in the register. And step 53
At step 54, the location (address) at which the system resource table 35 was loaded onto the memory 6 is set in the register, and at step 54, the start address of the OS 2 is set in the register. Finally, in step 55, CPU #2 is activated using the registers set in Stella f51 to f54.

As a result of the above, there are multiple processors, and the peripheral devices connected to the system operate on each processor.
Multiple OSs can coexist in one computer system that can be shared and used by S.

〔Effect of the invention〕

As explained above, the multi-OS coexistence operation method of the present invention allows multiple OSs to coexist in one computer system by starting another OS from one OS, so it has the following effects. .

■ You can start one OS while another OS is running.
This saves the effort of restarting the system when you want to use another OS.

■ Even if you do not have multiple computer systems, you can run multiple OSs at the same time.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. FIG. 2 is a flowchart showing an example of processing by the memory accessible means. FIG. 3 is a diagram showing an example of a memory management table. FIG. 4 is a flowchart showing an example of processing by the system loading means. FIG. 5 is a diagram showing an example of an OS header. FIG. 6 is a diagram showing an example of a system resource table. FIG. 7 is a flowchart showing an example of processing by the memory access prohibition means. FIG. 8 is a flowchart showing an example of processing by the processor starting means. 1... Memory access enable means, 2... System load means, 3... Memory access prohibition means, 4...
Processor starting means, 5... Processor (CPU #1
). 6...Memory, 7...Processor (CPU#2)
, 8... System resident volume, 9... Peripheral device section, 10... Memory management table, 11... System resource table. Probook diagram of the embodiment of the present invention Fig. 1 Fig. 7 Fig. 8

Claims (1)

[Claims] 1. In a computer system in which there are a plurality of processors and the peripheral devices connected to the system can be shared by each processor's operating system, the main processor is a slave processor. To load a working operating system into memory,
A memory accessible means for making the memory area to be managed by the slave processor accessible, loading an operating system operated by the slave processor into the memory area to be managed by the slave processor, and for peripheral devices connected to the system. A system load means that loads a system resource table storing information into a memory area, and a memory that prevents an operating system running on a main processor from accessing a memory area that should be managed by an operating system running on a slave processor. A multi-OS coexistence operation method comprising access prohibition means and processor activation means for activating slave processors to start up the system.