JPH05250167A - Program loading system - Google Patents

Abstract

PURPOSE:To provide the program loading system which shortens the time required for program loading since the need to respecify modules that are loaded once by an operator at the time of reloading is eliminated and modules which are loaded onto a main storage device decrease in number. CONSTITUTION:This system consists of a monitor part loading means 1 which loads only a monitor, a module selecting means 2 which selects plural modules to be loaded onto the main storage device, a selected module loading means 3 which loads only the selected modules onto the main storage device, a loading information structuring means 4 which structures loading information on the monitor and the modules that are selected and loaded onto the main storage device, and a loading state investigating means 5 which investigates whether or not the selected modules are already loaded on the main storage device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a program loading method for loading a module on a main memory under a certain monitor.

[0002]

2. Description of the Related Art In the conventional program loading method, when reloading, the previously loaded module was overwritten without being saved.

[0003]

In the above-mentioned conventional program loading method, when reloading, the operator has to re-designate the module once loaded, which is troublesome. Further, as the number of modules loaded at once increases, it takes too much time to expand all the modules on the main storage device.

An object of the present invention is that it is not necessary for the operator to re-designate a module that was once loaded at the time of reloading, and the time required for program loading is reduced even if the number of modules loaded on the main memory is small. It is to provide a shortened program loading method.

[0005]

According to the program loading method of the present invention, a monitor unit loading means for loading only a monitor, a module selecting means for selecting a plurality of modules to be loaded on a main storage device, and a selected plurality of modules. Selected module loading means for loading only the modules of the above into the main storage device, the monitor and the load information construction means for constructing the load information of the plurality of modules selected and loaded into the main storage device, and the selected module has already been loaded. And a load status check means for checking whether or not it is loaded on the main storage device.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention,
2, FIG. 3, FIG. 4, FIG. 5, and FIG.
It is an execution flow chart of each means of 4 and 5. See also FIG.
Is an example program format before it is loaded into the main memory,
FIG. 8 shows an example of a program format after being loaded in the main storage device. FIG. 9 is a format example of the load information table of FIGS. 7 and 8. FIG. 10 is a format example of the module number storage table.

Referring to FIG. 1, in the embodiment of the present invention, a monitor unit loading means 1 for loading only a monitor, a module selecting means 2 for selecting a module to be loaded on a main storage device, and a main module for only the selected module. The selected module loading means 3 to be loaded on the storage device, the load information construction means 4 for constructing the load information of the module selected as the monitor and loaded on the main storage device, and the selected module is already on the main storage device. It is composed of a load status investigation means 5 for investigating whether or not it is loaded in

The load information table of FIG. 9 manages information such as the monitor start address and length, the module start address and length, and the like.

The module number storage table of FIG. 10 stores the module numbers required by the operator to be loaded and designated by the keyboard.

The monitor loading means 1 obtains the start address and length of the monitor from the load information table (FIG. 9) in the program format (FIG. 7) before being loaded in the main storage device (step 21 in FIG. 2). Then, the length corresponding to the start address of the monitor is loaded and expanded in the main storage device (step 22 in FIG. 2).

When the loading of the monitor is completed, the load information construction means 4 is activated. The load information construction means 4 stores the number (0 in the case of a monitor), the name, and the start address length at the first position in the load information table (FIG. 9) in the program format (FIG. 8) after being loaded into the main storage device. (FIG. 5, steps 51, 52, 53, 54). The sector next to the monitor end address is stored in the second start address as the module start address (step 5 in FIG. 5).
5).

When the load information constructing means 4 ends, the module selecting means 2 is activated. The module name linked to the program (FIG. 7) before being loaded into the main memory is obtained from the load information table (FIG. 9) (FIG. 3 step 31) and the module name is displayed on the CRT (FIG. 3 step). 32), and wait for keyboard input (Fig. 3
Step 33).

Here, from the module name displayed on the CRT by the operator, only the necessary module is designated by the module number by the keyboard.

The module selecting means 3 monitors the interrupt of the keyboard and, when the interrupt occurs, takes the specified module number (step 34 in FIG. 3) and stores it in the module number storage table (FIG. 10) (step 35 in FIG. 3). ).

When the loading of the keyboard is completed, the selection module loading means 3 is started up. The selection module loading means 3 has a module number storage table (FIG. 10).
The first module number m is taken out (step 41 in FIG. 4). The start address and length corresponding to the module number m are obtained from the load information table (FIG. 9) of the program (FIG. 7) before being loaded into the main memory (FIG. 4).
Step 42). Further, the next start address is obtained from the load information table (FIG. 9) of the program (FIG. 8) after being loaded in the main memory (step 43 in FIG. 4). The length is loaded from the start address of the module number m of the program (FIG. 7) before being loaded into the main storage device, and the program is expanded from the start address on the main storage device (step 44 in FIG. 4).

When the loading of the module is completed, the load information constructing means 4 is activated. The load information construction means 4
Program format after being loaded into main memory (Fig. 8)
No., name, and second in the load information table (Fig. 9)
The start address and length are stored (step 5 in FIG. 5).
1, 52, 53, 54). Use the sector next to the end address of the module as the start address of the next module 3
It is stored in the th start address (step 55 in FIG. 5).
It is compared whether or not the start address exceeds MAX of the main storage device (step 56 in FIG. 5), and if not, the load information construction means 4 is terminated. If it exceeds, the start address of the next module of the monitor is put in the start address of the next module (step 57 in FIG. 5).

Again, the module number storage table (see FIG. 1)
0) is searched (step 45 in FIG. 4), and the same processing is repeated until the end of the module stored in the module number storage table (FIG. 10).

After all the modules are expanded and the load information is constructed, the control is passed to the monitor and the program loaded in the main memory is executed as usual.

When the end key is obtained from the operator through the keyboard interrupt, the module selecting means 2 is activated,
You can select the module you want to reload.

When the loading of the module number to be loaded is completed, the load status checking means 5 is activated to check whether or not the module has already been loaded in the main storage device for the second and subsequent times. The load status investigation means 5 retrieves the first module number p from the module number storage table (FIG. 10) (step 61 in FIG. 6). The module number p is compared with the number in the load information table (FIG. 9) after being loaded into the main memory (step 62 in FIG. 6). If it is already loaded, the module number p in the module number storage table (FIG. 10) is cleared (step 63 in FIG. 6). If it is loaded, the module number storage table (FIG. 10) is searched again to retrieve the next module number, and the process is repeated until the end of the module stored in the module number storage table (FIG. 10) (step 64 in FIG. 6). ).

When the rebuilding of the module number storage table (FIG. 10) is completed, the selected module loading means 3 and the load information building means 4 are activated, and the program loaded in the main storage device is executed as usual.

Repeat until reset or power off.

[0024]

As described above, according to the present invention, when reloading, by loading after the previously loaded module, the operator can save the trouble of re-designating the module.

Further, by changing the program loading method so that the module is not loaded even if a module already loaded on the main memory is selected, there is an effect that the time required for loading the program can be shortened.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is an execution flowchart of means 1 in FIG.

FIG. 3 is an execution flowchart of the means 2 of FIG.

4 is an execution flowchart of the means 3 of FIG.

5 is an execution flowchart of the means 4 of FIG.

6 is an execution flowchart of the means 5 of FIG.

FIG. 7 shows an example of a program format before being loaded into the main storage device.

FIG. 8 is an example of a program format after being loaded in the main storage device.

9 is a format example of the load information table of FIG. 7 and FIG.

FIG. 10 is a format example of a module number storage table.

[Explanation of symbols]

 1 monitor loading means 2 module selecting means 3 selecting module loading means 4 load information constructing means 5 load status investigating means

Claims (1)

[Claims] 1. A monitor unit loading means for loading only a monitor, a module selecting means for selecting a plurality of modules to be loaded on a main storage device, and a selection module for loading only a selected plurality of modules on a main storage device. A load means, a monitor, and a load information constructing means for constructing load information of a plurality of modules selected and loaded on the main memory, and checking whether or not the selected module is already loaded on the main memory. A program loading method, comprising: