JPH08263527A - System and method for simulation of cpu peripheral equipment - Google Patents

Abstract

PURPOSE: To improve a productivity of a simulation program. CONSTITUTION: In the case where a state registered in a state storage part 6 when an event is generated is registered in a device intrinsic data storage part 7, a simulation procedure execution means 4 executes a simulation procedure group 72 for each state which is registered corresponding to the state. In the case where the state registered in the state storage part 6 when the event is generated is not registered in the device intrinsic data storage part 7, a simulation procedure group 73 which does not depend upon the state in executed. A state transition means 5 after executing the simulation procedures by the states or simulation procedures that do not depend upon the state updates and register the state registered in the state storage part 6 on condition that the state shifts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for simulating a CPU peripheral device of target hardware by using a target hardware simulation means prepared on a host computer, and more particularly to a method of simulating a CPU peripheral device of the target hardware. The present invention relates to a method of simulating a response operation of a CPU peripheral device to an event that occurs.

[0002]

2. Description of the Related Art In a conventional CPU peripheral device simulation method, when simulating a response operation of a CPU peripheral device to an event that occurs outside or inside the CPU peripheral device, a response operation determined by the event that occurs is simulated. A simulation was carried out by preparing in advance and executing a simulation procedure corresponding to the event when the event occurred.

[0003]

SUMMARY OF THE INVENTION The conventional CPU described above.
In the peripheral device simulation method, if the response behavior differs depending on the state of the CPU peripheral device or the state transition, it is necessary to prepare a simulation means for the state and the state transition in the simulation procedure, and the simulation procedure is generally complicated. Therefore, there is a problem that the productivity of the simulation program is reduced.

According to the present invention, it is possible to make a simulation procedure of a response operation to an event occurring inside or outside the CPU peripheral device correspond to the state of the CPU peripheral device.
The purpose of the present invention is to prevent the simulation procedure from becoming complicated because it is not necessary to prepare a simulation means for a state and a state transition in the simulation procedure.

[0005]

A first aspect of the present invention provides a state storage unit for registering a state of a CPU peripheral device to be simulated, and a simulation procedure of a response operation to an event occurring outside or inside the CPU peripheral device. If the response action depends on the state, the first unique to the state
Device-specific data generation means for registering in the device-specific data storage unit as a second simulation procedure that does not depend on the state when the response operation does not depend on the state, and when the event occurs. When the state registered in the state storage unit when the event occurs is registered in the device specific data storage unit, the first simulation procedure registered corresponding to the state is executed, When the event occurs, the simulation procedure executing means for executing the second simulation procedure when the state registered in the state storage unit when the event occurs is not registered in the device specific data storage unit. And the state transitions after the execution of the first simulation procedure or the second simulation procedure. If it is characterized by having a state changing means for updating registers the status registered in the status storage unit.

A second aspect of the present invention provides a state storage unit for registering a state of a CPU peripheral device to be simulated and a device-specific data storage unit for storing a relationship between the state and a simulation procedure in advance. If the response operation depends on the state, the simulation procedure for the response operation to an event that occurs outside or inside the peripheral device is the first simulation procedure unique to the state, and the response operation does not depend on the state. In this case, the state is registered in the device-specific data storage unit as a second simulation procedure that does not depend on the state, and when the event occurs, the state registered in the state storage unit when the event occurs is device-specific. If registered in the data storage unit, the first simulation procedure registered corresponding to the state When the event occurs, the second simulation procedure is executed when the state registered in the state memory when the event occurs is not registered in the device unique data memory, When the state transits after the execution of the first simulation procedure or the second simulation procedure, the state registered in the state storage unit is updated and registered.

[0007]

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

FIG. 1 is a block diagram showing an embodiment of the present invention,
FIG. 2 is a flow chart showing an example of the simulation operation in the present invention.

In FIG. 1, simulation information 1 unique to the CPU peripheral device is information unique to the device to be simulated, and is state information 11 listing the names of the states required for the simulation operation of the peripheral device, and the external information of the peripheral device. Or the simulation procedure information 12 in which the simulation procedure of the response operation to each event that occurs internally is associated with each state of the state information 11 as a unique procedure or described as a procedure that does not depend on the state.

The simulator 2 of the CPU peripheral device changes various C by changing the data in the device-specific data storage unit 7.
It is a simulator capable of simulating a PU peripheral device, and device-specific data generation means 3 for generating device-specific simulation data from simulation information 1.
And a device-specific data storage unit 7 for storing device-specific data
And a simulation procedure executing means 4 for executing a simulation procedure in the storage unit 7 when an event occurs,
The state transition unit 5 is called by the execution unit 4 and causes a state transition, and the state storage unit 6 stores the current state.

The device-specific data generation means 3 uses the status information 1
The state registration means 31 for generating the state management table 71 having an entry corresponding to each state 1 and the simulation procedure executable by the execution means 4 are generated, and the simulation procedure group 72 for each state and the simulation independent of the state. The simulation procedure registration means 32 for generating the procedure group 73 is configured. The simulation procedure registration means 32 adds information to the state management table 71 so that each simulation procedure of the generated simulation procedure group 72 for each state can be referred to from the state management table 71.

Next, referring to FIGS. 1 and 2, the CPU
The operation of the simulator 2 of the peripheral device will be described. The device-specific data generation means 3 generates device-specific data from the CPU peripheral device-specific simulation information 1 in the device-specific data storage unit 7 (201). The generation method in this case is as described above. Next, the simulator 2 sets an initial state in the state storage unit 6 (202) and waits for the occurrence of an event for which the response operation needs to be simulated (2).
03, 204). When an event occurs, the simulation procedure executing means 4 determines, from the information of the entry of the state management table 71 corresponding to the state set in the state storage section, for the current state in the simulation procedure group 72 for each state. The registered simulation procedure is searched (205). As a result of the search, when there is a response operation simulation procedure for the occurred event (206), the simulation procedure is executed (208). If not (206), the simulation procedure of response operation to the event generated from the state-independent simulation procedure group 73 is searched (20).
7) and execute (208). If the executed simulation procedure specifies state transition (209),
A new state is set in the state storage unit 6 (210). In this way, when the simulation procedure of the response operation for the occurred event is completed, the occurrence of the event is waited again (203). By repeating this, the simulator 3
Simulate U peripheral equipment.

[0013]

As described above, the CP according to the present invention
In the U peripheral device simulation method, the state of the CPU peripheral device can be registered, and the simulation procedure of the response operation of the event that occurs outside or inside the CPU peripheral device can be registered for each state. Since it is not necessary to prepare the simulation means of the above, and the simulation procedure may be prepared based on the state and the state transition, the contents of the simulation procedure and the relationship between the simulation procedures are simplified, and the productivity of the simulation program is improved. Has the effect.

[Brief description of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a processing flowchart showing an embodiment of the present invention.

[Explanation of symbols]

 1 CPU Peripheral Device Unique Simulation Information 2 CPU Peripheral Device Simulator 3 Device Unique Data Generation Means 4 Simulation Procedure Execution Means 5 State Transition Means 6 State Memory 7 Device Unique Data Means 11 State Information 12 Simulation Procedure Information 31 State Registration Means 32 simulation procedure registration information 71 state management table 72 state-specific simulation procedure group 73 state-independent simulation procedure group

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hideki Fukuoka 3-9-15 Kaigan, Minato-ku, Tokyo NCE Information Systems Co., Ltd.

Claims (2)

[Claims] 1. A state storage unit for registering a state of a CPU peripheral device to be simulated, and a simulation procedure of a response action to an event occurring outside or inside the CPU peripheral device, wherein the response action depends on the state. Is a device-specific data generation unit that is registered in the device-specific data storage unit as a first simulation procedure unique to the state, and as a second simulation procedure that does not depend on the state when the response operation does not depend on the state. When the event occurs, when the state registered in the state storage unit when the event occurs is registered in the device specific data storage unit, the state corresponding to the state is registered. The state registered in the state storage unit when the event occurs when the simulation procedure 1 is executed and the event occurs Is not registered in the device-specific data storage unit, a simulation procedure executing means for executing the second simulation procedure; and the first procedure.
Of the CPU peripheral device, which has state transition means for renewing and registering the state registered in the state storage unit when the state transits after the execution of the simulation procedure or the second simulation procedure. method. 2. A state storage unit for registering a state of a CPU peripheral device to be simulated, and a device-specific data storage unit for storing a relationship between the state and a simulation procedure are prepared in advance, and external or internal of the CPU peripheral device. If the response action depends on the state, the simulation procedure of the response action to the event occurs in the state as the first simulation procedure unique to the state, and if the response action does not depend on the state, the state depends on the state. Not registered in the device-specific data storage unit as a second simulation procedure, and when the event occurs, the state registered in the state storage unit when the event occurs is registered in the device-specific data storage unit. If so, the first simulation procedure registered corresponding to the state is executed, and the event is If the state registered in the state storage unit at the time of occurrence of the event is not registered in the device-specific data storage unit, the second simulation procedure is executed, and the first simulation procedure or A method of simulating a CPU peripheral device, characterized in that when the state transits after the execution of the second simulation procedure, the state registered in the state storage unit is updated and registered.