KR20010012032A - Devices for using Multi OSs - Google Patents

Abstract

PURPOSE: A device for using multiple operating systems of a computer is provided to load a multiple number of operating systems(OS) by dividing a memory address into a number of independent memories and to enable the use of a multiple operating systems and their applications in one computer by switching over between the operating systems. CONSTITUTION: A system is initiated(51), a POST(power On Self-Test) is executed through a normal procedure, and an OS is loaded after the booting process. If a user desires to use a different OS(53), the device passes through a process that determines whether the desired OS has been loaded(54), a designated OS conversion key is pressed, and the system control proceeds to BIOS(Basic Input/Output System). The currently active OS's data is stored in a different protected address of a different memory or a different storage medium(55). A disk controller and other designated or necessary devices are initialized(56), a new OS is booted in a designated disk or a network device and loaded to a memory in a normal procedure(57). If the user desires to use a different OS, the step 54 is executed. If the OS has been loaded, the storage device and the address where the OS is stored is determined(58) and the previously active OS's data is transferred and stored in a different storage device(59). A new OS is used by initializing certain devices and loading the OS to a memory(60).

Description

Devices for using Multi OSs

The BIOS connects the peripherals of the computer to the input and output of the word literally. This BIOS data is loaded into the memory device and the OS or application sends and receives data through this memory address. Current memory and input / output structures are manufactured based on one OS. In order to use the application of other OS, the EMULATOR PROGRAM operating in the existing OS is manufactured, and the application program accesses the existing OS through this EMULATOR and controls the BIOS.

Make multiple OS and its applications available in the simplest possible way.

When occupying and using a peripheral device in one OS, switching to another OS allows some peripheral devices to remain allocated for the existing OS without being switched.

When dividing the memory so that a plurality of OSs can be used, if the memory size is set constant among the OSs, the memory size that can be used in one OS is limited, which requires a large amount of memory. To prevent this, configure the system to use memory flexibly.

In the method of loading and using a plurality of OSs, the plurality of OSs can be used simultaneously. By loading multiple OS, only one OS can be used.

The simplest way is to derive a way to implement the invention. In this way, the memory address can be implemented without switching.

It allows you to initialize some disk controllers, network devices, serial / parallel ports, etc. so that you can load other OS while using one OS.

Pre-configure to use multiple OS in BIOS setup.

Find out how to control the system when switching from one OS to another to use it.

1 illustrates a relationship between a peripheral device and a BIOS, a plurality of OSs and drivers, and applications thereof in a computer system.

Figure 2 shows the conventional method when loading and using the OS, drivers and applications, etc. in the memory device, completely divided into three memory devices to load the BIOS and the program for each OS in each memory device It shows sharing the BIOS when using three OSs divided into three.

3 illustrates that when two OSs are used, the entire memory device is divided into two, and when the second OS is loaded and used in the second memory device, the final end address is converted to the address 0 in the second OS. The case is shown.

4 is a block diagram illustrating a hardware structure in a system using the present invention.

FIG. 5 is a diagram illustrating a method of loading one OS into a memory in a normal manner and moving the loaded OS to another area of the memory and loading and using a new OS in order to load and use another OS.

6 is a diagram of loading an OS into memory and moving data of the OS to another storage device. This is a flow chart of how to save and load another OS into memory.

A conventional computer system is an equation of 1 computer = 1 BIOS = 1 memory device = 1 OS. The BIOS here refers to a device that controls an input / output device. This BIOS is loaded into a memory device and serves as a gateway for operating systems and applications to send and receive data to and from various peripherals in computer systems. In the present invention, the IO memory address, data of various adapter cards, etc. are loaded into the memory device to transmit or receive data from the memory through the IO memory address or to read information about the adapter card. Loading into a memory device is collectively referred to as "BIOS". The application runs through the OS. This structure is shown in FIG. 1 is a peripheral device of a computer system, 2 is a BIOS for controlling the input and output of the peripheral device of 1, 3 is a computer operating system for controlling the peripheral device through the BIOS, in this case an operating system called 'A' (example Windows 95) and 4 are Drivers programs that connect applications with 'A' OS, and 5 are applications for 'A' OS. 1 to 5 of FIG. 1 are structures for operating a computer system by the conventional method. The structures above control the substructures, eventually operating the entire computer system. 2 to 5 are loaded into the memory device to control the peripheral device of 1 by accessing the data contents and address of the memory device. use.

According to the present invention, there is not only one OS of 3, but a plurality of OSs at the same time. 6, 7 and 8 represent OS 'B', its device drivers and applications, respectively. 9, 10, and 11 represent different OSs and their device drivers and applications, respectively.

To do this, BIOS information is loaded into memory. To load multiple operating systems and their drivers, the memory device must be divided into multiple addresses. When the BIOS collects information about the memory, it recognizes and partitions the entire memory address and simply partitions the memory address in such a way that no other OS can access it except the BIOS data information. The BIOS divides this divided memory address by OS so that no other OS can access it. Each OS and its driver files are loaded and used in this divided memory device. This eliminates the need to use the EMULATOR program to use other operating systems and their applications, and is faster because each OS, drivers, and applications directly access BIOS information.

In the BIOS, two OSs can be loaded and run on the same computer at the same time, so if both OSs work at the same time, both OSs may want to use peripherals. But as soon as the OS switches, the mouse, keyboard, and video card should switch to the new OS and be ready to input and output data. Occupying or switching usage by OS for these peripheral devices is possible by software configuration. Devices that are not switched will continue to run in the BACKGROUND even if the OS is disabled.

In order to select and use each loaded OS, some means of how to enter the input device (eg switch to a combination of CTRL + ALT + Function keys, etc.) to select these OSs in the BIOS is required.

FIG. 2 shows the conventional BIOS and OS method (20 in FIG. 2), which divides the memory devices into very separate memory device groups and loads the respective BIOS information and OS into their respective memory devices (FIG. 2 shows the memory devices 21a, 21b and 21c of 21) and the case where the BIOS is shared (22).

Memory management can be complicated when the OS, drivers, and applications are required to occupy certain memory addresses. If you limit your OS to two (OS 'A' and OS 'B'), to prevent this, separate the memory into two separate devices ('A' and 'B'), and use two BIOS Allocate each memory device to OS, one OS uses memory device of 'A' in the normal way, and the other OS uses memory device of 'B', selecting OS 'B' in BIOS. In the case of switching and using the memory device 'B' when accessing the mask to the entire memory address to have a symmetric memory device address as shown in FIG. In Fig. 3, the memory device is divided into 23 and 24, and 23 is loaded with BIOS, drivers and application data for 'A' OS, and 24 is loaded with BIOS, drivers and application data for 'B' OS. It is. The BIOS information here is the same as the BIOS information.

The following is an example of such a case.

If you have a total of 32M BYTE memory, divide it into two memory devices 'A' and 'B' each having a size of 16M BYTE. The circuit can be used as a separate device, but because the circuit becomes complicated, the BIOS simply divides the total memory address into two and assigns it to each OS. 'A' OS uses memory device 'A' (address range 0 to 16777215) and 'B' OS uses memory device 'B' (address range 16777216 to 33554431).

The address 33554431 corresponds to the address 1FFFFFF in hexadecimal and 1111111111111111111111111 in binary. Here, in order to make 1111111111111111111111111 the address '0000000000000000000000000' of the memory device 'B', the actual address is subtracted from '1111111111111111111111111' and masked so that the value is a memory address value. The actual '1111111111111111111111110' becomes '0000000000000000000000001'. This is shown below.

0 1 ....... n-3 n-2 n-1 = n total

-(n-1) (n-1) ......... (n-1) (n-1) (n-1)

---- ---- ..... ----- ----- ----

Result-(n-1)-(n-2) ....... -2 -1 0 = n total

Convert the resulting address value "-" to +.

In the 'A' OS, the memory I / O address switched to use the present invention for the memory I / O address for accessing the existing peripheral device is shown in Table 1 below.

Example of IO memory address conversion to switch the memory address end address to 0 address Device type Legacy BIOS Memory Address New BIOS Memory Address HDD auxiliary ide controller 4008 ~ 400F, 0170 ~ 0177 1FFBFF7 to 1FFBFF0,1FFFE8F to 1FFFE88 com2 02f8 ~ 02ff 1FFFD07 to 1FFFD00

In this case, the access address masking operation should be done using a driver. This software address translation is a burden on the cpu. This allows the hardware to automatically mask the address using logic circuitry. The address converter 25 of FIG. 3 serves to convert these memory addresses.

As shown in FIG. 3, there is a variety of conveniences when the end address FFFFH of the memory is changed to 0000H. In other words, the entire memory area can be efficiently used by freeing a portion of the OS's memory that is not used by the OS being used without setting a memory boundary for each OS, and freely using the remaining unused portion.

4 is a simplified structural diagram of a hardware configuration using the present invention. The memory device 31 of FIG. 4 has a structure divided into three, and in the 32 BIOS, the OS is loaded into each memory device according to the OS switching program, and thus BIOS information is loaded into the memory device. The remaining CPUs, HDDs, FDDs, and other peripherals work the same as in traditional computer systems.

BIOS data for memory IO addresses, video cards, network adapter cards, etc. do not all need to be duplicated in the memory address area for each OS. This part loads only the memory area allocated to a certain OS and the other OSs access the memory area for one OS through the OS driver to reduce the waste of memory.

If you want to load one OS first and then load another, you need to read the data along with the boot sector along with instructions for the OS. To do this, first check that the loaded OS does not use the device such as the disk drive, network, etc., and then send a signal to the device such as the disk drive to initialize and read the data from the beginning.

At OS switchover, some of the inactive OS's memory data is stored on a portion of the hard disk to minimize the amount of memory that the inactive OS occupies unnecessarily.

5 is a method for achieving the object of the present invention without changing the memory address, unlike the above method. The two OSes 5A and 5B are loaded. The OS at lower address 41 is active. The OS at upper address 42 is inactive. An inactive OS is protected from being accessed by the active OS when it is stored in memory. Inactive OSs can also be stored in a separate location on the hard disk rather than in memory.

6 is a flow chart according to the method of FIG. 5. When the system is started (51), a POST (Power On Self-Test) proceeds in the normal manner. The OS is loaded through the boot process. If you want to use another OS (53) to check whether the OS to be used is already loaded (54), press the predefined OS switch key and system control is passed to the BIOS. The data of the existing active OS is stored on the memory at different addresses (protected) or on other storage media (55). Disk controllers and other predefined or required devices are additionally initialized (56) and predefined. Another OS is booted from the disk or network device that has been loaded and loaded into memory in the normal way (57). If you want to use a different OS, press the predefined OS switch key and check whether the OS to be used is loaded (54), and if it is already loaded, the storage device and address where the other OS is stored (58). The data on the memory of the previous active OS is moved and stored elsewhere in the storage device (59) and the OS to be used is initialized and loaded into the memory. In this way, the OS can be moved and stored on the hard disk instead of the memory, and can be recalled from time to time without waste of memory and two or more OS can be used without restriction.

1. Each OS has its advantages and disadvantages. Modifications of the BIOS program, addition of memory address translation devices and memory allow the use of multiple operating systems, taking advantage of their respective operating systems.

2. EMULATOR was used to run the program of other OS on one OS. However, the speed was slowed down because the work was performed through the existing OS despite the size of memory. The present invention can be used without such a speed drop.

3. Or, if there is no EMULATOR, it is used again after switching to OS by REBOOTING, and this inconvenience is eliminated.

5. Each OS has its own features or advantages. Even if the OS fell a bit in some ways, it was forced out of the market, requiring users to repurchase all the applications of a well-functioning OS. However, the present invention can use both a plurality of OS and its applications at a small cost.

6. It can save memory and can use multiple OS without any limitation.

7. Various ways of loading and using the OS are implemented.

Claims (21)

A method of using a plurality of OSs configured to load and use a plurality of OSs in one system using a plurality of OS loading means in a computer system. 2. The storage medium of claim 1, wherein the plurality of OS loading means mentioned move data of an OS already loaded in memory by means of memory data transfer means. How to use multiple OS configured to save. The method of claim 1, wherein the plurality of OS loading means mentioned comprises memory area dividing means and memory address switching means of the computer system, and the memory is divided into a plurality of areas by using the memory area dividing means, and necessary peripherals are identified. A plurality of OSs configured to be initialized to load a plurality of OSs into respective memory address areas, to select a plurality of loaded OSs, and to use a selected OS by switching a memory address using the memory address switching means mentioned in the selected OS address. How to use the OS. The method of claim 2, wherein the plurality of OS loading mentioned The memory data transfer means mentioned moves data of the OS loaded in the memory to another storage medium. Configured to store, Transfer control of a running computer system to system control means, Moving data of the OS loaded in the memory to the other storage medium by the mentioned memory data transfer means. Save it, Initialize necessary peripherals, A method of using a plurality of OSs configured to load another OS or to load and use data stored in another storage medium into a memory. 4. The method according to claim 3, wherein said memory region discriminating means divides the memory device addresses into a plurality. 4. The method according to claim 3, wherein said memory address switching means is configured to convert the actual physical address of the memory device of a predetermined area into divided memory start addresses and end addresses within said area. 4. The memory address translation method according to claim 3, wherein the memory address translation is divided into two regions, and one of the memory address transitions referred to as the starting address of the actual physical address of the memory device is used as a starting address, and then another region is used. A realm is a multiple OS usage method in which the end address of an actual physical address is a virtual start address and is configured to use an address below it. 4. The method of claim 3, wherein said memory area is configured such that an active OS uses an area that is not in use of a memory area of an inactive OS. A plurality of OSs are configured to be loaded in a computer system, and a plurality of OSs are configured to initialize necessary peripheral devices while the OS is in use, and a plurality of OSs can be loaded and used, and a plurality of OSs can be loaded and used. OS using system. 10. The system of claim 9, comprising OS data transfer means for transferring data of the OS loaded in the memory to another location on the storage medium and switching means between the plurality of OS. 10. The memory system of claim 9, wherein the memory system divides the memory into a plurality of regions using the memory region dividing means, and initializes the necessary peripheral devices. A method of using a plurality of OSs configured to use a selected OS by loading in a memory address area, selecting a plurality of loaded OSs, and converting a memory address using the mentioned memory address switching means to an address on the selected OS. Divide the memory device of the computer system into a plurality of areas, In a system configured to load and use a plurality of OSs by loading another OS into a memory area having a virtual start address by address switching a memory address of a memory area that does not include a start address of a physical physical address of the memory, A method of controlling a peripheral device in a multiple OS loading system configured to occupy a certain peripheral device of a computer system for a certain OS when switching between OSes. A memory address translation system that assigns a virtual memory address to a predetermined area of memory of a computer system by using memory address switching means. 14. The memory address translation system of claim 13, wherein the address-translated certain region can be loaded and used by another OS. Divide the memory device of the computer system into a plurality of areas, In a system configured to load and use another OS by loading another OS into a memory area having a virtual start address by address-translating a memory address of a memory area that does not include a start address of a physical physical address of the memory, A method of sharing BIOS data across multiple OS-enabled devices that is configured to share data from a BIOS loaded for one OS with another OS and not load redundant BIOS data into memory devices for those OSs. A method of initializing peripherals in your operating system that allows your computer system to initialize disk drives, network devices, serial / parallel ports, etc. using peripheral initialization means. 17. The method of claim 16, wherein said initialization means is in accordance with a bios configuration. OS is running. It consists of computer system control means and memory data moving means in the operating computer system, stops the operation of the active OS, transfers system control to the computer system control means by the computer system control means, and uses the memory data moving means to Moving OS data during operation configured to move data from other storage media. 19. The method of claim 18, wherein said computer system control means refers to moving and storing OS data during operation by bios. A method of blocking memory device addresses by dividing the actual physical address of the memory device into a plurality of areas to prevent a running OS from accessing them and to use them for other purposes. 21. The method of claim 20, wherein the blocking mentioned is configured by bios.