JPH04152410A - Data saving/restoring system for information processor - Google Patents

Abstract

PURPOSE:To attain a resuming function for a personal computer containing a high speed graphic function by saving the state of a graphic controller when the power supply of a system is cut off. CONSTITUTION:In a data saving processing state, the unique data is written into a blank area of the draphic data by a controller 40. Then one of two screens is designated and the date is read out of the same blank area of the designated screen by the controller 40. If the designated picture is identical with the picture set when the power supply of a system is cut off, the data equal to the written unique data is read out. If not, the data different from the unique data is read out. These read data are decided by a CPU 10 and this deciding result is saved into a back-up RAM 30 as the 1st screen mode data. In a data restoration processing state, the 1st picture mode data is read out and set to the controller 40 et the next application of the system power supply.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides an information processing system having a function (hereinafter referred to as a "resume function") of restoring the same system environment as the system environment when the system power was turned off when the system power was turned on. This relates to a method for saving and restoring data in the device.

[Conventional technology]

Personal computers (hereinafter referred to as personal computers) equipped with a resume function have been put into practical use.

The resume function saves various status information to a backup storage device that does not erase information even when the power is turned off when the computer system is powered off. A function that reads the status information saved in the system and configures the system environment.

Processing for realizing this function is normally controlled by an operating system (hereinafter referred to as O8). In other words, by constantly managing the various status information necessary to realize the resume function in the O5 management table, when the system is powered off, the necessary information from this management table is saved to the backup storage device mentioned above. .

[Invention or problem to be solved]

By the way, personal computers equipped with high-speed graphic functions are equipped with a dedicated graphic control device. Since this graphics control device is controlled exclusively by O5, the status information of the graphics control device cannot be managed by the management table of O8. Therefore, the state information of the graphics control device is not saved when the system is powered off, and the previous state is lost when the system is powered on next time, requiring new initial settings to be made.

The object of the present invention is to solve such problems and realize a resume function in a personal computer equipped with a high-speed graphic function.

[Means to solve the problem]

In order to solve the above problems, the data saving method of the information processing device of the present invention uses a graphics control device to write unique data in the margin of the graphic data that is being accessed when the system power is turned off as data saving processing. The first screen obtained by respecifying one of the screens and then using the graphics control device to read data from the same blank space of the graphic data on that screen and checking whether it is the same data as the written data. The mode data is saved to the backup storage device, and as a data restoration process, the first screen mode data is read from the backup storage device and the graphic system is created! l
l Set on the device.

[Effect]

According to the data evacuation and restoration method of the information processing device of the present invention,
First, as data saving processing, unique data is written in the margin of the graphic data that is being accessed when the system power is turned off using the graphic control device. Next, one of the screens is designated, and data is read from the same blank space on the designated screen using the graphics control device. If the specified screen is the same as the screen when the system was powered off, the same unique data that was written will be read. Also, if the specified screen is not the same as the screen when the system was powered off,
Data is read that is different from the unique data written. Then, the data read in this way is determined, and the determination result is saved in the backup storage device as first screen mode data.

Next, as a data restoration process, this screen mode data is read out and set in the graphic control device when the system power is turned on next time.

By the way, for example, if the graphic data being accessed when the system power is turned off consists of multiple areas, unique data can be stored in the margins of a specific area from among these areas using the graphics control device. written. Data is then read out from the same margin using the graphics control device. If a particular area of graphics data is available, the unique data written is read out. Also, if a particular area of graphic data is unavailable, data that is different from the unique data that was written is read. This data is determined, and the determination result is saved as second screen mode data in a backup storage device together with the first screen mode data.

Furthermore, if multiple regions of graphic data are, for example, R
If the area is divided into four areas: -GB, brightness, unique data is written in the margin of the brightness area, and the usability of this area is checked.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS A data saving and restoring method for an information processing apparatus according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 3 of the accompanying drawings.

FIG. 1 is a circuit diagram of a portion related to data saving and restoring processing of the information processing apparatus according to the present embodiment.

This circuit diagram shows the G-V operating according to the commands of CPU10.
RAM20 and backup RAM30, G-VR
Graphic control device 40 that controls reading or writing of graphic data stored in AM20
and a display device 50 on which graphic data of the G-VRAM 20 is displayed. The graphics control device 40 is equipped with an I10 port (not shown) for setting the screen mode. When the power is turned off, the graphic data stored in the G-VRAM 20 and the graphic control device 40 are
The data in the mode is saved to the backup RAM 30. When the power is turned on, the state at power-off is restored based on the data stored in the back amplifier RAM 30. The overall circuit diagram of this embodiment is shown in FIG. 4. The entire circuit includes a main memory device 100SROMIIO11005RO, a battery device 130, and an input/output device 140 in addition to the circuit shown in FIG.

Next, the data saving and restoring method of this embodiment will be explained using FIGS. 2 and 3. FIG. 2 is a conceptual diagram showing data saving processing performed when the system power is turned off. G-V
The RAM 20 stores two screens worth of graphic data (256 KB) in bank 0 and bank 1. Bank 0 and bank 1 are assigned the same address, and by switching banks, graphic data for either one can be displayed on the display device 50.

] One bank has four regions (Brane 1 to Brain 4)
It consists of R (red) for brane 1, G (green) for brane 2, B (blue) for brane 3, and brane 4.
Brightness information is stored in units of dots. The actual color is then displayed by combining the data of the same dot positions on both sides of these branes. By the way, among the four branes, brane 4 may or may not be used. 4 if using brain 4
Since a graphic screen is made up of a number of branes, 2'-16 states can be created for one dot. The screen mode in this case is called 16-color mode,
You can select 16 colors from 4096 colors. Also, if plane 4 is not used, the graphic screen is composed of 3 planes, so 23 planes per dot.
- You can create 8 different states. The screen mode in this case is called 8-color mode. Bank switching and switching between 8-color mode and 16-color mode are controlled by the graphic control device 40.

When the system power is turned off, the graphic data of bank 0 and bank 1 stored in the G-VRAM is saved to the backup RAM 30. In addition, the first screen mode data indicating which bank is being accessed when the system power is turned off, and the second screen mode data indicating whether the bank is being displayed in 8-color mode or 16-color mode, are also saved to the backup RAM 30. Ru.

By the way, since these screen modes are set in an ID-like manner, they cannot be read out and saved. Therefore, the following method is used for determination.

First, to determine whether bank 0 or bank 1 is being used, write unique character string data in the blank space of plane 1 of the currently used bank, for example, “E
PSON" is written five times using the graphic control device 40. Here, the unique character string data is an irregular character that has a very low possibility of matching the data originally stored in the blank space of plane 1. Refers to column data.

Thereafter, the bank 0 screen is designated, and data is read from the same blank space on the bank 0 screen using the graphic control device. If the character string "EPSON" can be read five times, it can be determined that the screen when the system power is turned off is bank O. Further, if the read data is not "EPSON", it can be determined that the screen when the system power is turned off is bank 1. This determination result is saved in the area 31 of the backup RAM 30 as first screen mode data.

Next, to determine whether the mode is 8-color mode or 16-color mode, the character string "EPSON" is written in the margin of the plane 4 five times using the graphic control device 40. After that, data is transferred from the same blank area to the graphic control device 40.
Read out using .

If the string “EPSON” can be read 5 times, it is plane 4.
is available, and it can be determined that it is currently operating in 16-color mode. Furthermore, if the read data is not "EPSON", it is known that plane 4 is unusable, and it can be determined whether the plane is currently operating in the 8-color mode.

This determination result is saved in the area 32 of the backup storage device 30 as second screen mode data.

FIG. 3 is a conceptual diagram showing a data restoration method. When the system power is turned on, the graphic data of bank 0 and bank 1 saved in the backup RAM 30 is transferred to the G-VRAM 20. Further, the first screen mode data saved in the area 31 and the second screen mode data saved in the area 32 are set in the graphic control device 40. Specifically, the first screen mode data is I10, which is a component of the graphic control device 40.
The port addresses are set to A4h and A6h. Also,
The second screen mode data is set to the address 6Ah of the I10 boat, which is a component of the graphic control device 40. Since such initial settings are performed, the environment in which the graphic screen is used when the system power is last turned off is restored as soon as the system power is turned on.

〔Effect of the invention〕

If the data backup and restoration method of the information processing device of the present invention is used,
The graphic screen usage environment was restored when the system was last powered off or when the system was powered on. Therefore, after the system power is turned on, the information processing device can be used without resetting the usage environment of the graphic screen.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing an embodiment of the present invention, Fig. 2 is a conceptual diagram showing the data saving method of this embodiment, Fig. 3 is a conceptual diagram showing the data restoring method of this embodiment, and Fig. 4 is an overall circuit diagram of this embodiment. 10... CPU, 20... (, -VRA
M, 30...) Gutsup RAM, 4
0...Graphic control device, 50...Display device.

Claims (1)

[Scope of Claims] 1. A graphic data storage device that stores graphic data for two screens, and displays one screen on a display device by accessing either of the graphic data as selected; It includes a graphics control device that controls reading or writing of graphic data from the data storage device, and a backup storage device that retains the stored data even when the system power is turned off, and when the system power is turned off, the graphic data storage device Information for performing a data saving process to save the stored graphic data to the backup storage device, and then performing a data restoration process to restore the graphic data stored in the backup storage device to the graphic data storage device when the system power is turned on. In the processing device,
In the data saving process, unique data is written in the blank space of the graphic data that is being accessed when the system power is turned off using the graphic control device, and after re-designating one of the screens, the graphic data of that screen is saved. The first data obtained by reading data from the same blank space using the graphic control device and checking whether it is the same as the written data.
Screen mode data is saved to the backup storage device, and in the data restoration process, first screen mode data is read from the backup storage device and set in the graphic control device. method. 2. One screen of the graphic data stored in the graphic data storage device is composed of a plurality of areas, and in the data saving process, the blank area of a specific area of the graphic data that is being accessed when the system power is turned off is a second screen mode obtained by writing unique data using the graphic control device, then reading data from the same margin using the graphic control device, and checking whether the data is the same as the written data; 2. The information processing apparatus according to claim 1, wherein data is saved in the backup storage device, and in the data restoration process, second screen mode data is read from the backup storage device and set in the graphic control device. Data backup and restoration method. 3. One screen of graphic data stored in the graphic data storage device consists of four areas: R, G, B, and brightness, and the area where unique data is written in the data saving process is the brightness area. 3. The data saving and restoring method for an information processing apparatus according to claim 2, wherein the data saving and restoring method is an area.