JPS62191982A - Graph output control system - Google Patents

Abstract

PURPOSE:To obtain a graph output control system with high maintenance by storing the control data of a graph into a graph memory and accessing them independently from processing data stored into a main memory. CONSTITUTION:When a program A loaded on a main memory 2 is prepared, after graph data B occur, a graph memory 3 is accessed, and a graph command GCMD to assemble the graph is written. When a series of the processing of a program A comes to the place of the GCMD, graph control data C designated by a pointer with the GCMD on the graph memory 3 is accessed through a register group 4 by the GCMD. When the GCMD is executed, a graph D to be outputted is assembled by graph control data C on the graph memory 3 and the graph data B shown by the pointer in the GCMD generated by the program A. The graph is stored into a buffer 5 and continuously, transferred to a graph output device 6 corresponding to the transfer destination device address designated by the GCMD.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a graph output control method in data processing of an electronic computer.

[Prior Art'] Conventionally, when a data processing program of an electronic computer outputs a graph, output control data for the graph that the program attempts to output is included in the program.

[Problem that the invention seeks to solve]

In the conventional graph output control method described above, the program itself and the graph control data for controlling graph output are integrated, so if you want to revise the graph control data, you must revise the program itself. It has the disadvantage that it cannot be used.

An object of the present invention is to provide a highly maintainable graph output control method by eliminating the above-mentioned drawbacks and making the program body and graph control data independent.

[Means for Solving the Problems] The graph output control system of the present invention has a main memory that stores a processing program and processing data to be displayed, and a graph that indicates the type, size, etc. of the graph to be displayed. a graph memory for storing control data of the main memory, a register group and a buffer for storing each data of the main memory and the graph memory, and a graph output device for displaying a graph based on the data from the register group and the buffer; By storing graph control data in the graph memory,
The control data may be accessed independently of the processing data stored in the main memory.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of each device for realizing data processing according to an embodiment of the present invention, in which 1 is a central processing unit, 2 is a main memory, and 3 is a memory for storing graph control data. 4 is a register group that holds the graph data generated by the program in the main memory and the address of graph control data in the graph memory, 5 is a buffer for reading and writing to the memory, and 6 is a graph output It is a device.

FIG. 2 is a schematic diagram explaining the memory relationship in FIG. 1, in which program A is stored on main memory 2, and its program
A graph D is created using the graph data B generated by the series of processes of , and the graph control data C on the graph memory 3, and this graph D is output to the graph output device 6. The operation in this case will be explained.

(1) In order to output a graph to the graph output device 6 by the program A loaded on the main memory 2, the graph memory 3 is accessed after the graph data B is generated when creating the program A, and the graph command (
(hereinafter referred to as G CM D).

(2) When the series of processing of program A reaches the location of GCMD, GCMD stores GCMD on the graph memory 3.
Graph control data C specified by pointer GMP
is accessed via register group 4.

(3) When GCMD is executed, graph D to be output is assembled using graph control data C on the accessed graph memory 3 and graph data B indicated by pointer GDP in GCMD generated by program A. It will be done.

(4) The assembled graph D is stored in the buffer 5, and then transferred to the destination device address O specified by GCMD.
It is transferred to the graph output device 6 corresponding to AD.

(5) Program A is executed again from the next address of GCMD in main memory 2.

Next, the graph command (GCMD) and graph data B are shown in FIGS. 3, 4, 5, and 6.

Graph control data C9 The assembled graph D will be explained.

The graph command GCMD consists of 7 bytes, with the first 1
An operation code indicating a graph command is set in the byte, and the remaining two bytes are used to set three addresses. In other words, the pointer of graph data B (G
Dp), graph control data C pointer (GMP), and graph transfer destination address (OAD). Graph data B in Figure 4 stores variable data among the information composing the graph, and graph control data C in Figure 5 stores information such as graph type, size, title, X-axis, Y-axis values, etc. Data that controls the graph and fixed data are stored. Graph D in FIG. 6 is a final image for graph output assembled from graph data B and graph control data C.

〔Effect of the invention〕

As explained above, the present invention has the advantage that by making the data processing program main body and the graph control data independent, it is possible to configure a graph output system with high maintainability.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing the system configuration of an embodiment of the present invention, Fig. 2 is a schematic diagram showing the relationship among the main memory, graph, memory, and buffer in Fig. 1, and Fig. 3 is a graph command (
GCMD), FIG. 4 is a diagram showing an example of graph data B, FIG. 5 is a diagram showing an example display of graph control data C, and FIG. It is a figure of the example of a display of the graph D which synthesized with the graph control data of a figure. DESCRIPTION OF SYMBOLS 1...Central processing unit, 2...Main memory, 3...Graph memory, 4...Register group, 5...Buffer, 6
...Graph output device.

Claims (1)

[Claims] A main memory that stores processing programs and processing data to be displayed, a graph memory that stores graph control data indicating the type and size of graphs to be displayed, and each data of these main memory and graph memory is stored. It is equipped with a register group and a buffer, and a graph output device that displays a graph based on the data from these register group and buffer, and by storing the control data of the graph in the graph memory, the control data is stored in the main memory. A graph output control method characterized by being stored and accessed independently of processing data.