JPS5853763B2 - Program loading processing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a system program loading method, and particularly to a program loading (hereinafter referred to as IPL) method in a data processing device with limited memory capacity.

In data processing equipment that edits IJ data (keyboard entry data or input from a terminal, etc.) as necessary, stores it on a floppy disk, magnetic tape device, etc., or sends it out over a line,
Since memory capacity is limited, a method is generally used in which multiple system programs are stored in an external storage medium such as a floppy disk, and one system program is selectively IPLed each time each job is executed. ing.

Conventionally, as an IPL method in this type of data processing apparatus, a processing method as shown in the flowchart of FIG. 1 has been used.

That is, when the power is first turned on, in step 10, file indexes of various system programs resident on an external storage medium such as a floppy disk are displayed on the display device.

The operator uses the record advance key (RFC/AD
Select the desired system program file using a function key such as V key) and display the file label on the display device (steps 11 and 12).
).

Next, the operator operates the IPL key in step 13.
), the selected system program is loaded into the system program area of the microprocessor memory (step 14).

As a result, the job (JOB) is executed (step 1
5) Depending on the type of job, job
By operating the end key (step 16), one job is completed and the process returns to the initial mode (index mode).

Next, the operator selects the system program for the next work to be performed in steps 10 to 12 and operates the IPL key.

Thereafter, the above-described loading operation is repeated.

In this way, according to the conventional IPL method, step 11
, 13, and 16, the operation becomes very complicated when performing multiple jobs.

Furthermore, there is a risk of causing erroneous operations such as file selection errors.

In particular, since the selection of files in step 11 is time-consuming, there is a problem that the overall processing time becomes longer.

Therefore, the present invention solves the above-mentioned problems of the prior art, and an object of the present invention is to provide an automatic I/O system that is easy to operate for an operator and can easily manage complex jobs.
The purpose of this invention is to provide a PL processing method.

In the present invention, which achieves the above-mentioned object, a plurality of types of system programs are prepared in an external medium, and in a data processing device into which a selected one of the system programs is loaded, the next system program is loaded. The names of system programs to be selected are stored in a predetermined storage mechanism, and each time a job is completed, the contents of the storage mechanism are checked and the system program indicated by the contents is loaded.

The present invention will be explained in detail below with reference to Examples.

FIG. 2 is a block diagram showing the outline of one embodiment of the present invention, and FIG. 3 is a flowchart explaining the operation of this embodiment.

In FIG. 2, 20 is a memory used by the microprocessor for processing.

This memory includes a system program area 20a into which system programs are loaded, a JOB control program FCR (Format
At least an area 20b for loading the JOB (Control Program), an area (monitor register) 20c for storing the currently executed JOB number, and the like are provided.

Further, 21 is the first floppy disk of this system, and a plurality of types of system programs are stored in multi-files in this floppy disk.

A second floppy disk 22 stores a JOB control program FCR that specifies parameters for each JOB.

In this embodiment, the file name or number of the system program to be loaded next to the system program is written in a predetermined area in each FCR created corresponding to each system program.

In addition, in FIG. 2, 1 is a microprocessor, 23
is a read control circuit for floppy disks 21 and 22;
24 is a read control circuit for the memory 20; 25 is a memory 20;
26 is a write control circuit, 26 is an IPL control circuit, 27 is a comparator, 28 is an AND gate, 29 is a key discrimination circuit, 30.degree. 31.32 is a JOB end key, an IPL key, and a data key, respectively.

When the power is turned on, the microprocessor 1 displays the file index of the floppy disk 21 on a display device (not shown) (step 10' in FIG. 3).
), the operator selects the system program file to be loaded first by operating a function key (not shown) (steps 11' and 12').

This can be done by inputting the code of the file, etc.

Next, the operator operates the IPL key 31 (13 steps).

As a result, step 11' of the floppy disk 21
The system program in the file selected in is the floppy disk read control circuit 23 and write control circuit 2.
5 to the system program area 20a of the memory 20.
is loaded under the control of the microprocessor 1, and then the FCR for JOB control of the system program is loaded under the control of the microprocessor 1.
is loaded from the floppy disk 22 into the FCR area 20b of the memory 20 (step 14').

Job execution authority is transferred to the loaded program, and according to this program, the microprocessor 1
In step 15'), the operator executes the JOB.
When the end key 30 is operated, the contents of the FCR are examined (steps 16' and 35).

That is, when the JOB end key 30 is operated, the key determination circuit 29 makes a determination, the read control circuit 24 is operated, and the next loading item stored in a predetermined area in the FCR area 20b of the memory 20 is selected. The name of the system program to be executed, in other words, the JOB number to be executed next is read out.

Further, the name of the currently loaded system program held in the monitor register 20c of the memory 20, in other words, the JOB number that has been executed so far, is read out, and the comparator 27 reads out the name of the currently loaded system program held in the monitor register 20c of the memory 20, and the It is compared with the JOB number (step 36).

If the two match, access is made directly from the start address of the system program, and the same JOB is repeatedly executed.

That is, the process returns to step 15' in FIG. If the two JOB numbers do not match, the JOB number from the FCR is sent to the IPL control circuit 26 via the AND gate 28 and further sent to the floppy disk read control circuit 23.

As a result, the specified file label is searched for the floppy disk 21 (step 37).
Further, an IPL operation of the program of the searched file is performed, and the system program specified in the FCR is automatically loaded into the system program area 20a of the memory 20.

That is, the process returns to step 14' in FIG.

Thereafter, the above-described IPL, JOB, comparison, and search operations are repeated.

As described above, according to the IPL processing method of the present invention,
The operator only needs to perform the system program selection operation and IPL key operation once at the beginning, and subsequent IPL processing is performed automatically according to the system program name preset in a predetermined area within the FCR during FCR training. It is carried out according to

Therefore, the operator is freed from complicated system program selection operations and IPL operations that are required when executing a plurality of jobs, and even complex jobs can be easily managed.

Furthermore, system program selection errors can be reduced, and the overall processing time can be significantly shortened.

[Brief explanation of the drawing]

FIG. 1 is a flowchart of a conventional IPL processing method, FIG. 2 is a block diagram of an embodiment of the present invention, and FIG. 3 is a flowchart of the above embodiment. 1...Microprocessor, 20...
Memory, 20a... system program area,
20b...FCR area, 20c...Monitor register, 21°22...Floppy disk, 23, 24...Reading control circuit, 25.
. . . Write control circuit, 26 . . . IPL control circuit, 27 . . . Comparator.

Claims (1)

[Claims] 1. an external memory in which a plurality of types of system programs are stored; a means for selecting and instructing a program to be executed from among the system programs; and a main memory into which the unit system program selected by the selection instructing means is loaded; and a processing device that executes a program loaded into the main memory, the external memory stores order data indicating the order of the system programs to be loaded, and the main memory includes:
Comparing means that provides a storage area into which the sequential data is loaded, and compares the system program loaded in the main memory with the system program instructed by the sequential data each time execution of a unit system program is completed; means for searching the external memory for a system program that is activated when the two system programs do not match by the comparing means and is designated by the order data, and the order in which the system programs are stored in the storage area upon completion of the unit system program; Examine the contents of the data,
A program loading processing method characterized in that a system program indicated by the content is loaded.