JPS63109558A - Program load system - Google Patents

Abstract

PURPOSE:To correct a program stored in a ROM simply and to raise the system early by correcting a program while referencing a corrected information file on a disk in loading a program stored in the ROM to a RAM thereby having only to generate a correction information file on the disk at once. CONSTITUTION:After a program from a ROM 4 is loaded to a RAM 7, part 11 of a program is corrected based on the correction information file 12 inputted from a keyboard 5 in advance and stored in a disk 6. Thus, even if the correction program in the RAM 3 is lost by power interruption, the corrected information is inputted from the disk other than a conventional system and re-input of correction information from the keyboard 5 is not required and the system rising is quickened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a program loading method in an information processing device.

[Conventional technology]

Conventionally, as a method for modifying a program stored in a ROM, modification data is inputted from a keyboard or the like, the inputted modification data is stored in a memory backed up by a battery, and the above-mentioned modifications are performed while referring to it. R
There is a way to modify the program loaded from OM to RAM.

[Problem that the invention seeks to solve]

In conventional methods, the modified data is stored in battery-backed memory, so when the battery dies, the modified data becomes invalid, and the modified data must be entered again from the keyboard, etc., causing system problems. The disadvantage is that startup is slow.

[Means for solving the problem] In an information processing device having a ROM in which a program is stored and a RAM in which the program is loaded, an When loading a program stored on the RAM into the RAM, the computer has a function of modifying the program loaded onto the RAM according to program modification information on the disk.

1' Example] Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a configuration diagram showing an information processing apparatus for carrying out an embodiment of the present invention, and shows a ROM 4 in which a program is stored.
and the main body 2 including RAM 3 where the program is loaded,
A display 1, a keyboard 5, and a disk device 6 are connected.

FIG. 2 (a) is a diagram explaining the conventional method, in which the RAM 7
The above program 8 is a loaded program 10 stored in the ROM 4, and is operated by inputting correction data from the keyboard into the user memory 9 on the RAM 7 backed up by a battery. FIG. 2(b) is a diagram for explaining the present invention in detail,
After the program 10 from the ROM 4 is loaded into the RAM 7, a part 11 of the program is modified based on a modification information file 12 entered in advance from the keyboard and stored on the disk 6. Therefore, even if the modification program on the RAM disappears when the power is turned off, the modification information can be input from the disk unlike in the past, so there is no need to re-enter the modification information from the keyboard, and the system can be started up more quickly.

FIG. 3 shows the modification information file 1 stored on the disk 6.
2 is a structural diagram showing an example of correction information data 13a,
13b, 13c, and the end 14 of the modification information data represented by 0OOOH2 bytes.

FIG. 4 shows the format of the modification information data, and the length of the modification information data storing the length of the modification information data is 15.
Modification data address for storing the segment base and offset address of modification information data 16. It is composed of a set of old data 17a that stores data before modification and new data 18a that stores data to be modified.

FIG. 5 shows a procedure for modifying a program loaded into the RAM while the program stored in the ROM refers to the modification information file. First, one process of loading a program stored in the ROM into the RAM is performed. Next, a process 20 is performed to determine whether there is a modification information file on the disk 6. If there is no modification information file, the process ends, and if there is a modification information file, the process proceeds to process 21.

In process 21, the first 2 bytes of the corrected report file are read and the value is assigned to n. This n means the length of the modification information data if it is not "o", and the end of the modification information data if it is 0". In process 22, it is determined whether n is "0°" and " If it is 0゛, it ends and “
If it is not 0°, proceed to process 23. In process 23, address 16 of the modified data is read and n is read from that address.
Replace byte old data with new data. This completes the modification based on one modification information data 13, and the process proceeds to the next modification information data. For this purpose, a process 24 is performed in which the first 2 bytes of the next correction information data are read and the value is substituted for n, and the process returns to process 22.

[Effects of the Invention] As explained above, in the present invention, when the program stored in the ROM is loaded into the RAM, the program is modified while referring to the modification information file on the disk, so that the program is stored once on the disk. By creating a modification information file, programs stored in the ROM can be easily modified, and the system can be started up more quickly.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an information processing apparatus for carrying out an embodiment of the present invention, and FIGS. 2(a) and 2(b) show a conventional example in which a program stored in a ROM is loaded into a RAM. , and diagrams showing the case of the present invention, FIG. 3 is a configuration diagram of a modification information file, FIG. 4 is a schematic diagram of modification information data in FIG. 3, and FIG. 12 is a flowchart showing a processing procedure for modifying a program while referring to modification information data when loading the program into a computer. In the figure, 1...Display, 2...Main body, 3
,...RAM, 4...ROM, 5...keyboard,
6...Disk device, 7...RAM, 8...RA
Program loaded into M, 9...user memory,
10...Program stored in ROM, 11.
...corrected data, 12...correction information file,
131. . Correction information data, 14... End of correction information data, 1
5...Length of correction information data, 16...Address of correction data, 17...Old data, 18...New data, 19-24...Program correction processing stored in ROM . It's (゛・. Agent Patent attorney Uchihara sound λ・$l Concave (cl) (Munomome 2 Figure $3 Figure 4 Figure

Claims (1)

[Claims] An information processing device having a ROM in which a program is stored and a RAM into which the program is loaded, the information processing device having a disk in which a file having program modification information is stored, and loading the program stored in the ROM into the RAM. A method for loading a program, wherein the program loaded onto the RAM is modified according to program modification information on the disk.