JPH02309420A - Information processor - Google Patents

Abstract

PURPOSE:To reduce excess labor due to the lacking of labor and to prevent the generation of an error by determining whether processing is to be executed by a simulation program in a local memory or a self-microprogram. CONSTITUTION:A microprocessor 1 writes the value of a register 102 in the local memory 2 and a system controller 4 reads out the written value. A simulation program 104 corresponding to the revision of the microprocessor 1 is loaded from an FD in accordance with the read value and saved in the local memory 2. The microprocessor 1 executes the processing of the program stored in a main memory 3 under the control of the microprogram 101. Prior to the execution of processing whose change is proposed, a table 103 in the local memory 2 is referred and whether the processing is to be executed by the microprogram 101 or the simulation program 104 is determined. Consequently, excess labor or the generation of errors due to the lack of labor can be removed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an information processing device, and more particularly to an information processing device having a built-in microprogram stored in a ROM.

[Conventional technology]

Generally, in information processing equipment, a simulation program is used to avoid malfunctions in the microprocessor hardware and built-in ROMized firmware, and to handle hardware errors such as bus errors to which the microprocessor is connected. It varies depending on the revisit 3.

A conventional example is shown below.

One is to store the control program on a floppy disk (hereinafter referred to as FD).
(abbreviated as ). The equipment user should visually check the revision of the microprocessor before starting the equipment.
After starting up the apparatus, the user inputs the file name of the simulation program corresponding to the microma processor revision to be loaded using the keyboard or the like, thereby storing the simulation program in the RAM.

The other is a device in which the user visually checks the revision of the microprocessor and then installs a ROM in which a corresponding simulation program is stored in advance.

In these devices, when a hardware error or the like occurs, the error is handled by reading and executing a simulation program stored in the ROM or RAM.

, [Problems to be Solved by the Invention] In the conventional information processing device described above, the user of the device visually checks the revision of the microprocessor and then installs a floppy disk containing the simulation program corresponding to the revision of the microprocessor. It is necessary to prepare a medium such as a disk or ROM.

For this reason, the device user has to manage the media review, which requires manual intervention, which has the disadvantage that the wrong simulation program may be loaded and the device may not operate correctly. be.

Furthermore, when a ROM is used, it is very troublesome to insert and remove the ROM from the printed circuit board, which may result in poor contact between the ROM bins.

[Means to solve the problem]

An information processing device of the present invention comprises: a register for storing the revision of its own microprocessor; and a register that restricts the hardware of its own microprocessor;
Before executing a process, refer to a table existing in a local memory outside the microprocessor and decide whether to execute the process on a simulation program on the local memory or by the own microprogram. A microprocessor having an internal ROM that stores microprograms with functions, the table showing the locations of processes that have been changed due to the revision of the microprocessor, and the table that shows the locations of processes that have been changed due to the revision of the microprocessor The local memory stores a simulation program for simulating processing by software, and when the system is started up, the values of the registers storing the microprocessor revision inside the microprocessor are read, and the values correspond to the revision. a system control device having a function of transferring the table and the simulation program from an external storage device to the local memory; and an external storage device that stores the table and the simulation program corresponding to all revisions of the microprocessor. It is characterized by having.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be explained below with reference to the drawings.

FIG. 1 is a block diagram of an information processing apparatus according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a microprocessor which is an arithmetic processing unit of this information processing apparatus, and includes a ROM-based microprocessor 101 . ! : has a register (hereinafter abbreviated as revision register) 102 that stores the microprocessor revision. The local memory 2 is composed of a RAM, and includes a table 103 showing the locations of processes that actually require changes among processes that are expected to be changed due to a revision of the microprocessor, and the changes that will occur. A simulation program 104 for simulating the process is stored.

A floppy disk (hereinafter abbreviated as FD) device 5 is preset with a table 103 showing changes corresponding to all revisions of the microprocessor 1 and an FD storing a simulation program 104.

The actual operation will be explained below.

When starting up this device, the microprocessor 1 writes the value of the read register 102 to a certain area on the local memory 2, and the system control device 4 reads the value. The system control device 4 executes a simulation program corresponding to the revision of the microprocessor 1 according to the value.
It is loaded from the FD set in the D drive device 5 and saved on the local memory 2.

Thereafter, the microprocessor 1 processes the program in the main memory 3 under the control of the microprogram 101, but before executing a process that is expected to change, it refers to the table 103 in the local memory 2 and changes the process. It is determined whether this is to be performed by the microprogram 101 or by executing the simulation program 104.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, there is no need for file management based on the revision of the simulation program, and there is no need for manual input and effort and errors.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention. 1... Microprocessor, 2... Local memory, 3... Main memory, 4... Group/system control device, 5... FD drive device, 1o: Internal bus, 101: Microprocessor program, 1o2: Register for storing the microprocessor revision, 103: Indicates the existence of a change in processing due to the microprocessor revision. Table, 104... Simulation program.

Claims (1)

[Scope of Claims] A register for storing the revision of the own microprocessor; and a register for constraining the hardware of the own microprocessor;
Before executing a process, refer to a table existing in a local memory outside the microprocessor and decide whether to execute the process on a simulation program on the local memory or by the own microprogram. A microprocessor having an internal ROM that stores a microprogram with a function, the table showing the locations of processes that have been changed due to the revision of the microprocessor, and the table that shows the locations of processes that have been changed due to the revision of the microprocessor. the local memory for storing a simulation program for simulating processing by software; and the table for reading the value of a register storing a microprocessor revision inside the microprocessor when the system is started up and corresponding to the revision. a system control device having a function of transferring the simulation program from an external storage device to the local memory; and the external storage device storing the table corresponding to all revisions of the microprocessor and the simulation program. Characteristic information processing device.