JPH04115327A - Information processor - Google Patents

Abstract

PURPOSE:To reduce time and cost for reconstructing a preceding control hardware by switching the preceding control corresponding to a previously set instruction code from hardware control to firmware control in each detection of the instruction code. CONSTITUTION:When an illegal trouble generates in the preceding control of hardware control for a certain instruction code, the instruction code is set up in a register of a switch instruction code register group 2 through a scanning path 100. Then a firmware to be correct preceding control corresponding to the instruction code is stored in a control storage 4 and a starting address for starting the firmware which is stored in the storage 4 is set up in a register of an address register group 5 which corresponds to the register of the register group 2. Thereafter, the coincidence of the instruction code is detected by an instruction code comparing part 3 in each setting of the instruction code in an instruction word register 1 and the starting address corresponding to the instruction code is outputted from an address register group 5 to the storage 4 to start the correct preceding control ware corresponding to the instruction code stored in the storage 4.

Description

TECHNICAL FIELD The present invention relates to an information processing apparatus, and more particularly to an information processing apparatus that performs advance control processing performed by an instruction code of an instruction word by hardware control.

BACKGROUND ART Conventionally, in this type of information processing apparatus, advance control processing has been performed by hardware control in order to speed up processing.

In such conventional information processing devices, advance control processing is performed by hardware control for each instruction code, so if an incorrect problem occurs with even one instruction code in hardware control, advance control processing is carried out for each instruction code. The device cannot be operated without rebuilding the hardware,
There is a problem in that it takes time and money to rebuild the hardware.

OBJECTS OF THE INVENTION The present invention has been made in order to eliminate the problems of the conventional ones as described above, and aims to provide an information processing device that can reduce the effort and cost of re-creating advance control hardware.

Composition of the Invention An information processing device according to the present invention is an information processing device that performs advance control corresponding to an instruction code by hardware control, and includes a holding means for holding a switching instruction code set in advance; a storage means for storing firmware corresponding to the switching instruction code that has been transferred; a comparing means for comparing the instruction code and the switching instruction code held in the holding means; and when a match is detected by the comparing means. , and means for performing the advance control using the firmware stored in the storage means.

Embodiment Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In the figure, an instruction word to be executed is held in instruction word register 1, and the instruction code of the instruction word is stored in data bus 1.
02 to the instruction code comparison section 3 and instruction code decoder 6.

An arbitrary instruction code is set in the switching instruction code register group 2 via the scan canvas 100, and the instruction code is outputted to the instruction code comparator 3 via the data bus 101.

The instruction code comparison unit 3 compares the instruction code from the instruction word register 1 manually entered via the data bus 102 and the switching instruction code register group 2 input via the data bus 101.
, and outputs a selection instruction signal to the control switching unit 7 via the data bus 103 and outputs an instruction signal to the address register group 5 via the data bus 104 according to the comparison result. .

The control memory 4 stores firmware used for advance control, and transmits the control signal of the firmware activated by the activation address from the address register group 5 inputted via the data bus 105 to the control switching unit via the data bus 106. Output to 7.

The start address of the control memory 4 corresponding to the instruction code set in the switching instruction code register group 2 is set in the address register group 5 by a scan canvas (not shown).
The activation address designated by the instruction signal from the instruction code comparator 3 inputted via the data bus 104 is outputted to the control memory 4 via the data bus 105.

The instruction code decoder 6 decodes the instruction code from the instruction register 1 input via the data bus 102, and outputs the hardware control instruction signal generated as a result and used for advance control via the data bus 1 (17). It is output to the control switching section 7.

The control switching unit 7 converts one of the control signal from the control memory 4 inputted via the data bus 10B and the hardware control instruction signal from the instruction code decoder 6 inputted via the data bus 107 into data. A selection is made in response to a selection instruction signal from the instruction code comparison section 3 inputted via the bus 103, and the selected signal is outputted as a advance control instruction signal via the data bus 10B.

That is, the control switching unit 7 performs advance control using firmware in the control memory 4 or performs hardware control using a hardware control instruction signal generated by the instruction code decoder 6, depending on the selection instruction signal from the instruction code comparison unit 3. toggle whether to do so.

The operation of one embodiment of the present invention will be explained using FIG.

If an incorrect problem occurs in the preceding hardware control of a certain instruction code, the instruction code is first set in one register of the switching instruction food register group 2 via the scan canvas 100.

Next, the correct advance control firmware corresponding to the instruction code is stored in the control memory 4, and the start address of the control memory 4 for starting this firmware is set to the switching instruction code register group 2 where the instruction code is set. is set in the register of address register group 5 corresponding to the register.

By performing the above processing, a match is detected in the instruction code comparison unit 3 every time the instruction code is set in the instruction word register 1 from now on, so that the address register group 5
However, the activation address corresponding to the instruction code is stored in the control memory 4.
The correct advance control firmware corresponding to the instruction code in the control memory 4 is activated.

By starting this firmware, the preceding control of the instruction code is switched from the previous hardware control to the firmware control by the control switching unit 7.

Therefore, the advance control of an instruction code in which an incorrect problem occurred in the advance control by hardware control is switched to firmware control and is performed correctly.

In this way, if an incorrect problem occurs in the advance control of the hardware control of a certain instruction code, the correct advance control firmware corresponding to that instruction code is stored in the control memory 4, and the instruction code is stored in the control memory 4. By performing advance control of the instruction code by the firmware in the control memory 4 each time the instruction code is detected by the section 3, there is no need to recreate the advance control hardware, thereby reducing the time and cost of rebuilding the advance control hardware. can be reduced.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, each time a preset instruction code is detected, the preceding control corresponding to the instruction code is switched from hardware control to firmware control. This has the effect of reducing the effort and cost of re-creating advance control hardware.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. Explanation of symbols of main parts 1...Instruction word register 2...Switching instruction code register group 3...
・Instruction code comparison unit 4...Control memory 7...Control switching unit

Claims (1)

[Claims] (1) An information processing device that performs advance control corresponding to an instruction code by hardware control, comprising a holding means for holding a preset switching instruction code, and a holding means corresponding to the switching instruction code held in the holding means. a storage means for storing firmware to be stored, a comparison means for comparing the instruction code and the switching instruction code held in the holding means, and when a match is detected by the comparison means,
An information processing apparatus comprising means for performing the advance control using the firmware stored in the storage means.