JPH02286383A - Character output apparatus - Google Patents

Abstract

PURPOSE:To operate a system by merely performing the re-loading only with the program of the part depending on the form of printing data by mounting a means performing the coupling with a program performing loaded program I/O control and a table storing the data for the coupling. CONSTITUTION:A found file is applied to be written in a printing control program region 4b and the setting of the coupling table of the head part of a loaded program is performed. A system program file has the coupling at the head thereof and the rear part thereof is set to an actual program. This coupling table is largely divided into two parts and, in one of them, an I/O control program referred to from a printing control program and the address of other program module are stored and, in the other part, the address of a module referred to from a resident program is stored. Since a value is already set to the latter at the time of the preparation of the program file but no value is set to the former, a value is set to the former table.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention provides a character output device, especially a program that controls the entire device, which is not entirely 110M formatted and is loaded from an external storage device when the power is turned on. Related to a functioning type of character output device (prior art) In a conventional device of this type, the system program that controls the entire character output device has a part that controls Ilo, such as a console and an external storage device, and a part that controls Ilo, such as a console and an external storage device, and The parts that perform printing processing such as data analysis, expansion, and output are integrated.

[Problem to be solved by the invention]

Therefore, in the above-mentioned apparatus, when the format of manually input print data differs due to a difference in the host computer or the like that supplies the print data, the system program corresponding to each format naturally differs. Therefore, when handling print data in a different format, the system program must be reloaded, and there is a disadvantage that unnecessary processing is performed, such as loading the program for the I10 control part that does not depend on the data format. Ta.

The present invention has been made in view of the problems of the prior art described above, and its purpose is to process print data without reloading the entire system program even when printing data in a different format is handled. The object of this invention is to provide a character output device that only requires reloading the part of the program that depends on the format.

(Means for Solving the Problems) In order to solve the above-mentioned problems and achieve the purpose, a character output device according to the present invention includes means for loading a system program, and a program for controlling the loaded program and I10. and a table storing information for the combination.

[For production]

With the above configuration, when loading the system program, only the part of the program that depends on the print data format is loaded, and the system can be operated without loading the part of the program that does not depend on the format of the print data. .

(Example) Hereinafter, an example according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a block diagram of this embodiment.

In the figure, 1 is 2, the recording device main body; 2 is the recording device main body 1
A CPU controls the entire system, and 3 is a ROM in which a part of the program shown in the flowchart of FIG. 2 is stored.

A RAM 4 is used as a work area during the processing operation of the CPt 12 and stores a part of the program in the flowchart of FIG. 2, and there is a table 4b therein for storing program connection information.

5 and 6 are a magnetic disk device and a floppy disk device, respectively, in which the system program is stored.

IJI! of the output device of this embodiment having the above configuration.
The 1-filling operation will be explained with reference to the flowchart in FIG.

First, in step Sl, it is determined whether a system program switching command has been input from the keyboard 8.

If it has been input, in step S2, step S1
The magnetic disk device 5 and floppy disk device 6 are searched to see if a file with the specified name exists. If not, error processing is performed in step S4.

In step S5, the found file is loaded and written into the print control program area 4b, and in step S6, a combination table for the beginning of the program loaded in step S5 is set.

As shown in FIG. 3, the system program file has a binding table at the beginning of the file, and the actual program is at the end. This connection table is roughly divided into two parts as shown in FIG. One is the I referenced by the print control program (hereinafter referred to as non-resident program).
10 Control programs and others (hereinafter referred to as resident programs)
The address of the program module is stored,
The other stores the address of the module referenced by the resident program.

The latter value is already set when the program file is created, but the former value is not set. Therefore, in step S6, values are set in the former table.

〔Effect of the invention〕

As explained above, according to the present invention, divided programs can be easily loaded and combined with a simple configuration, and even when handling print data having different formats, parts that depend on the format of the print data can be easily loaded and combined. The effect is that the system can be operated simply by reloading only the program.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a character output device according to an embodiment of the present invention, Fig. 2 is a diagram showing a flowchart of this embodiment, Fig. 3 is a structural diagram of a program file, and Fig. 4 is a diagram of a join table. It is a structural diagram. Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1) A character output device characterized by having an address table storing addresses where modules exist in memory.