JPS61233840A - Diagnosis system of display processor - Google Patents

Abstract

PURPOSE:To display the result of diagnosis with display device of a display processor itself by storing a diagnostic program to a main storage device of the display processor and providing the hardware required for th execution of the display of diagnosis result. CONSTITUTION:A diagnostic program is stored in the main storage device 4 and a program having various functions relating to the display is stored in a read only memory 14. In setting the mode to th diagnostic mode, a program stored in the read only memory 14 is executed to conduct test of the hardware required to display an alphanumeric to a CDT 1, and when any fault exists, the result is displayed on an LED. When the hardware is normal, a character font is generated according to the character code inputted from a keyboard 7, stored in the display storage device to display a character on the CRT 1 and the character code is sent to the diagnostic program. When the display request for the result of diagnosis exists, the character font is generated and stored in the display storage device and displayed on the CRT 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a diagnostic method for a display processing device in which the diagnostic results of the display processing device are displayed on the display device of the display processing device itself, which is the object to be diagnosed. .

[Conventional technology]

FIG. 3 is a block diagram for explaining a diagnosis method of a conventional display processing device. In FIG. 3, (1) is a CRT which is a display device of a display processing device, and (2) is a display processing control device that controls the display operation of C'RT (1).

The display processing control device (2) is connected to the central processing unit (8), and (4) is a main memory provided in the central processing unit (8). A diagnostic program is stored. On the other hand, (6) is a maintenance console, (6) is an external storage device that stores the diagnostic program, and (TE) is a keyboard, which are connected to the central processing unit (8) via the input/output control device (8). ). Input/output control device (8) t'i, maintenance console (5)
, external storage device (6), and keyboard (7).

Next, a procedure for diagnosing the display processing device will be explained. When an abnormality occurs in the display processing device, a diagnostic program is executed to identify the abnormality. That is, first, the maintenance console (6) is connected to the input/output control device (8), and by operating this maintenance console (5), the diagnostic program and character 7 are downloaded from the external storage device (6).
The ont is read and stored in the main memory (4).

Then, from the maintenance console (6) to the central processing unit (8)
) to diagnose each part of the display processing device, display the diagnosis results on the maintenance console (6) via the input/output control device (8), and display the results obtained in this way. Based on the results, abnormal locations were analyzed.

As mentioned above, the CRT (1), the display processing control device (2),
In a display processing device consisting of a central processing unit (8), a main memory device (4), etc., conventional diagnostic methods require a dedicated maintenance console (5) and an external storage device i (6) for diagnosis.
).

[Problem that the invention seeks to solve]

According to the conventional diagnostic method for display processing devices as described above,
A dedicated device is required to execute the diagnosis and display the results, which complicates the device configuration and increases costs.In addition, it requires a central processing unit, main memory, and input/output control unit to load the diagnostic program. , an external storage device, etc., it is necessary to operate these functions normally for diagnosis, and there has been a problem in that it is difficult to realize the functions.

The present invention has been made to solve such problems, and it is possible to display the results of a diagnostic program on the display device of the display processing device itself using a diagnostic program when diagnosing an abnormality in the display processing device. Another object of the present invention is to provide a diagnostic method for a display processing device that can easily realize a diagnostic function by converting a part of the diagnostic function into firmware.

[Means for solving problems]

A diagnostic method for a display processing device according to the present invention includes hardware that stores a diagnostic program in the main memory of the display processing device and implements the minimum functions necessary to display diagnostic results, and comprises Diagnosis is performed using a diagnostic program, and the results of the diagnosis are displayed on a display device of a display processing device to be diagnosed.

[Effect]

In this invention, the display processing device is not provided with a dedicated device for executing and displaying the diagnosis, and the diagnosis can be executed with only the minimum necessary hardware, and the display processing device itself can perform the diagnosis using the display device itself. Display the diagnosis results.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a functional block diagram illustrating a device configuration that implements a diagnostic method for a display processing device according to the present invention, and FIG. 2 shows the device configuration described above as a computer system including a display processing device. FIG. In Figure 1, (9) is a diagnostic mode switch that sets the display processing installation to diagnostic mode, and (to) is an LI that can display numbers.
D, (1) is a display device provided in the display processing device, (γ) is a keyboard provided in the display processing device, and σ1) is a diagnostic program for the display processing device. CRT in Figure 1
(1) and the keyboard (7) are the same as those of the conventional device. The diagnostic mode switch (9), LED (to), keyboard (γ), CRT (1), and diagnostic program (b) are related by various functions described in block (2) in the figure.

This relationship will be explained in the operation below.

In FIG. 2, (1) to (4) and (γL (a) are exactly the same as the conventional device.The maintenance console and external storage device are removed, and the input/output control device is replaced with (8) is provided with an input/output device (13), and the central processing unit (8) is provided with a read-only storage device (1→). (to) are arranged as input/output devices, etc., the diagnostic program (b) is stored in the main memory control device (4), and the program shown in block (2) and having various functions related to the following display is read out. Dedicated storage device α
→ is stored in

Next, the operation of diagnosing the display processing device will be described. First, turn on the diagnostic mode switch (9) to set the diagnostic mode. Then, the central processing unit (8) operates and the program stored in the read-only storage device α4 is executed. That is, as shown by the block (to), the hardware necessary to confirm the diagnostic mode specified by the diagnostic mode switch (9) and display alphanumeric characters on the CRT (1), such as the main memory ( 4), display storage device, central processing unit (write/write of 81 various registers)
Tests the leads/conveyors, etc., and if any abnormalities are found, the results are displayed on the LED (to) using an error code. If it is normal, it will wait for input from the keyboard (te),
Or, if there is an input from the keyboard (6), a character font is created according to the input character code, and this is sent to the display processing device. By being stored in the display storage device, the characters are displayed on the CRT (1) and, at the same time, when there is an input request from the diagnostic program (b), the character code is transmitted to the diagnostic program (9). Also, when there is a request to display diagnostic results from the diagnostic program (b), a character font is created in the same way as above, stored in the display storage device, and displayed on the CRT (
1).

The program that realizes the above-mentioned functions shown in the block diagram in FIG.
However, this storage device α exclusively for threading
→ is resident in the display processing device. Therefore, when diagnosing a display processing device, there is no need to provide an external storage device and read programs one by one as in the conventional case, and therefore the above functions can be realized with a smaller hardware configuration.

Note that the above embodiment describes a display processing device;
Any device equipped with a display device and controlled by a processor, such as a simple microcomputer or a relatively large-scale multi-function terminal, can produce the same effect as described above.

〔Effect of the invention〕

As explained above, in this invention, the display processing device is provided with a diagnostic display function in the device itself, thereby eliminating the need for a specialized device for diagnosis, making the device less expensive, and making it possible to easily realize the diagnostic function. can. In addition to diagnostic purposes, it can also be used as a debug function during hardware and software development.

[Brief explanation of drawings]

FIG. 1 is a functional block diagram illustrating a diagnostic method for a display processing device according to an embodiment of the present invention, FIG. 2 is a configuration diagram of a device that embodies the diagnostic method for a display processing device according to the present invention, and FIG. FIG. 2 is a device configuration diagram illustrating a diagnosis method of a conventional display processing device. In the figure, (1) is the CRT of the display processing device, (81 is the central processing unit, (4) is the main memory, (γ) is the keyboard, (9) is the diagnostic mode switch, (to) is the Lllii
D, (6) is a diagnostic program, and 0 is an input/output control device. In addition, the same symbols in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] In a display processing device that processes various information in a central processing unit and displays the processing results on a display device, a diagnostic program performs a diagnosis in the event of a failure, etc., and the diagnostic results are displayed on the display device of the display processing device to be diagnosed. 1. A diagnostic method for a display processing device, characterized in that the display processing device displays the following information.