JPS60254334A - Simulator device for program of microcomputer - Google Patents

Abstract

PURPOSE:To reduce the correction of a program even if the kind of a microcomputer (MC) to be simulated by using an MC of hardware for a simulator device. CONSTITUTION:To simulate an MC6'-1, a control program in a control program part 3 sets various simulated conditions in an input port program part and a memory program part 4. The control program part 3 reads out an instruction from a memory program part 4 in accordance with an address signal outputted from the MC6'-1, applies it to the MC6'-1 through a control circuit 6'-2, executes one instruction through a control circuit 6'-3, and reads out the executed state of the output port of the MC6'-1 through the control circuit 6'-2 to execute simulation. If the instruction to be executed is an input instruction, the corresponding input data is read out from an input port program part 5 and applied to the MC6'-1.

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Industrial Application The present invention relates to a simulator device, which is one of the program development support devices used when testing microcomputer programs.

(2) Prior Art As shown in FIG. 2, a conventional microcomputer simulator reads a program into a memory program unit 4 through interactive processing between a program development support device 1 and a console 2, and inputs an input port program. Simulation using part 5, especially editing a series of input data read from the input boat, control program part 3
It outputs simulation results using the simulator, supervises the entire simulator, and controls the CPU using the CPU program section 6. In order to simulate
Through the processing of the control program, all conditions for simulation are completed, and from C, the programs in the memory program section 4 are read out 4 at a time.
Execute it using the CPU/program. The CPU/program section 4 receives data from the input port/program section 5 as necessary.

Since all processing is done by programs, the simulation execution time will be slow. Furthermore, each time the function of the microcomputer to be simulated changes, the description of the CPU program section must be changed.

(3) Problems to be Solved by the Invention An object of the present invention is to provide a microcomputer program simulator device that can perform simulations in a short time and that requires fewer program corrections even if the model of the microcomputer to be simulated changes. obtain.

(4) Means for Solving the Problems According to the present invention, the function of the microcomputer is replaced by a hardware microcomputer instead of the CPU/program section written by a program, thereby eliminating the need for writing a program. In addition, we obtained a shimmy system for microcomputer programs designed to improve shimmy execution speed.

(5) Examples Next, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which the CPU/program unit 6, which was conventionally written as a program, is replaced with a microconverter card 6' for a simulator configured with hardware.

The microcomputer card 6' includes a simulation microcomputer 6'-1, a control circuit 6'-2 for receiving and receiving signals between the microcomputer 6'-1 and the program development support device, and a microcomputer 6'-2.
It consists of a control circuit 6'-3 for causing Taro'-1 to execute instructions.

In order to simulate the microcomputer 6'-1, the control program in the control program section 3 inputs various simulation items to the program section 5. Set in memory program section 4.

In response to the address signal output from the microcomputer 1, the control program section 3 reads out instructions from the memory program section 4, and reads out instructions from the control circuit 6.
'-2 to Microcomputer Taro'-1;
The simulation is executed by executing one instruction via the control circuit 6'-3 and reading the status of the output port of the microcomputer 61-1 after execution via the control circuit 6'-2. If the instruction to be executed is an input instruction, the corresponding input data is read from the input port program section 5 and is sent to the microcomputer 6.
Give the input take to '-1. Furthermore, by executing a routine that sweeps out the internal registers of the microcomputer 6'-1, it becomes possible to follow the flow of internal registers.

In this simulator device, the microcomputer
The card 6' is the only hardware specific to the microcomputer, and by replacing the microcomputer card 6', a different microcomputer simulator can be realized.0 (6) Detailed explanation of the invention As such, in the simulator device according to the present invention,
By using a hardware microcomputer, it is possible to clearly separate the parts that are specific to the microcomputer from those that are not specific to the microcomputer in the simulator equipment.

The unique part will be made up of a hardware microcomputer, and the non-unique part will be made up of a program on the simulator IT.

Therefore, when developing a new microcomputer simulator device, there is an advantage that only the unique part, the microcomputer card, needs to be developed.
Since the decoding and execution of instructions is made up of hardware, it has the advantage of speeding up simulation.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a simulator device according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional simulator device. 1...Program development support device, 2...°°°
°Control, 3...A control program for controlling input data and the entire simulator,
4...Memory program for storing the memory of the microcomputer, 5°°°°°゛Input port program for storing a series of data of the input port of the microcomputer, 6... CPU program 7 is a program that describes the functions of a microcomputer.
A s 5'...Microcomputer card for simulator configured with hardware, 6'-1
...Hardware microcomputer, 6'-2
...Hardware microcomputer 6'
-1 and a control circuit for communicating with the program development support device, 6'-3... Control circuit for causing the hardware microphone C117 and heater 6'-1 to execute instructions. muscle diagram 2

Claims (1)

[Claims] A microcomputer program simulator device is equipped with a program that stores various conditions to be input to the microcomputer, and is especially suitable for simulation.
A simulator device for a program of a microcomputer, characterized in that by adding the microcomputer, instructions are executed by giving the microcomputer an input signal and a control signal according to an output signal of the microcomputer.