JPH01193935A - Program control system by sub-command execution system - Google Patents

Abstract

PURPOSE:To reduce the burden of a high-order processor, to improve function with less memory capacity and to facilitate the addition of the function by permitting a low-order processor to collate a prescribed table while it sequentially executes processing programs. CONSTITUTION:A function command (command B) 101 is given from the high- order processor 1. The low-order processor 2 collates to the sub-command B on the table 3 corresponding to the command B101. The order of executing the processing programs 'b', 'a', 'f' and 'd' and the parameters of respective programs are mentioned in the sub-command B. The low-order processor 2 sequentially loads and executes the processing programs 'b', 'a', 'f' and 'd' in correspondence with the sub-command B. Thus, the load of the high-order processor can be reduced and processing speed is improved. Furthermore, the complicated function can be realized with less memory capacity and the function can be easily added.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a program control system, and particularly to a program control system for controlling character and image processing programs on a microprocessor.

[Conventional technology]

In conventional program control for this type of microprocessor, multiple programs (
(object program) was required, the following methods were available.

(1) A method in which multiple programs are combined (linked) to create one executable program (load module), and the load module is executed.

(2) A method in which a host processor sequentially loads multiple programs onto memory and executes them.

[Problem that the invention seeks to solve]

The conventional method described above has the problem that in the former case, the link must be re-linked every time a function is added or modified, and that it requires a large amount of memory capacity when trying to implement complex functions. In the latter case, the host program becomes complicated and the load on the host processor increases, making it impossible to obtain high processing performance.

An object of the present invention is for a lower processor to sequentially load and execute a plurality of object programs corresponding to a function command given by an upper processor while referring to a table that describes the execution order of the object programs and their parameters as subcommands. The purpose of this is to reduce the load on the upper processor and improve processing speed, and also to realize complex functions with a small memory capacity and make it easy to add functions.

[Means for solving problems]

The program control method of the present invention includes a table that describes the execution order of a plurality of processing programs corresponding to a command given from a host processor and its parameters as subcommands, and a table that describes the subcommands described in the table. It has means for realizing commands given from a higher-level processor by sequentially executing processing programs.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram of an embodiment of the present invention.

(1) Function command (command B) from upper processor 1
) 101 is given. Command B10 must be executed first.

(2) The lower processor 2 refers to the subcommand B on the table 3 corresponding to the command B101.

Subcommand B has processing programs "I" and "A".

The order of execution of ``force'' and ``work'' and the parameters of each program are described.

(3) Follow subcommand 1m to lower processor 2,
Load and execute the processing programs "I", "A", "Riki", and "Work" in sequence.

FIG. 2 is a conceptual diagram showing an example of the configuration of subcommand B. A load command 201, an input parameter 202, and an execution command 203 for each processing program are described in the subcommand in accordance with the execution order of the plurality of processing programs.

FIG. 3 is a schematic diagram showing a processing example of double enlarged vertical black and white inverted character development (hereinafter abbreviated as process A) as an example of the command 101 of process B shown in FIG. Upper processor 1
from the lower processor 2 to the processing A function command (301
) is issued, the lower processor 2 performs the following operations.

(1) The lower processor 2 refers to the subcommand of process A in table 3 (302), and the character expansion program (1
load (302-1) and execute (302-1)
303-1).

(2) When the character expansion is completed, the lower processor 2 again refers to the subcommand of process A and the character expansion program (2
Load (302-2) and execute (302-2) the
303-2).

(3) Similarly, after character enlargement, a 90 degree rotation program (third process) is loaded (302-3') and executed (303-3).

(4) Similarly, black and white inversion program (4th place;
5- Load (302-4) and execute (303-
4).

When the execution of all the processing programs necessary for the above processing A is completed, the lower processor 2 returns a completion signal (304) to the upper processor 1.

〔Effect of the invention〕

As explained above, the present invention describes the execution order of a plurality of processing programs corresponding to each function in controlling character processing etc. for the purpose of sequentially applying various conversions and printing. A processing method that sequentially executes processing programs while referring to a table has the effect of reducing the load on the host processor, realizing high functionality with a small memory capacity, and making it easy to add functionality.

[Brief explanation of the drawing]

Figure 1 is an overall configuration diagram showing an embodiment of the present invention, Figure 2 is a conceptual diagram showing an example of the configuration of subcommands shown in Table 3 in Figure 1, and Figure 3 is an example of a command twice as large. FIG. 3 is a schematic diagram of a process taking enlarged vertical writing black and white inverted character development as an example. -N- 1... Upper processor, 2... Lower processor, 3... Table, 4... Object program. Agent Patent Attorney Susumu Uchihara

Claims (1)

[Claims] In a program control system for a microprocessor that processes characters and images, there is a table that describes the execution order and parameters of multiple processing programs corresponding to a command given from a host processor as subcommands, and a subcommand that describes the subcommands. sequentially executing the plurality of processing programs while referring to commands;
1. A program control method using a subcommand execution format, characterized by having means for realizing a command given from a host processor.