JPS648451A - Microprogram control device - Google Patents
Microprogram control deviceInfo
- Publication number
- JPS648451A JPS648451A JP62164249A JP16424987A JPS648451A JP S648451 A JPS648451 A JP S648451A JP 62164249 A JP62164249 A JP 62164249A JP 16424987 A JP16424987 A JP 16424987A JP S648451 A JPS648451 A JP S648451A
- Authority
- JP
- Japan
- Prior art keywords
- microinstruction
- error
- address
- jump instruction
- microprogram
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Detection And Correction Of Errors (AREA)
Abstract
PURPOSE:To reduce the number of hardwares by writing a microinstruction in the address of a control memory specified by an address signal including the odd (even) number of logic '1's and a jump instruction to an error processor in the other address and reading out a memory by an address signal including logically processed bits. CONSTITUTION:A microinstruction or a jump instruction read out from a control device 11 to a microinstruction register 12 is decoded by a decoder 13, and in case of the microinstruction, the decoded result is sent to an unshown microprogram execution part to execute it. In case of the jump instruction, the decoder 13 suppresses the sending of the instruction and interrupts an error processor consisting of a service processor or the like. Consequently, the execution of the microprogram is suspended and the error processor executes prescribed processing. Since a control memory is provided with a parity check function and an error interruption deciding function and its capacity is duplicated, circuits for parity check, output control, error interruption, etc., can be omitted.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62164249A JPS648451A (en) | 1987-06-30 | 1987-06-30 | Microprogram control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62164249A JPS648451A (en) | 1987-06-30 | 1987-06-30 | Microprogram control device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS648451A true JPS648451A (en) | 1989-01-12 |
Family
ID=15789508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62164249A Pending JPS648451A (en) | 1987-06-30 | 1987-06-30 | Microprogram control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS648451A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57120303A (en) * | 1981-01-19 | 1982-07-27 | Seiko Epson Corp | Rare earch cobalt permanent magnet |
JPH0512047A (en) * | 1991-07-04 | 1993-01-22 | Fujitsu Ltd | Error detecting circuit |
-
1987
- 1987-06-30 JP JP62164249A patent/JPS648451A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57120303A (en) * | 1981-01-19 | 1982-07-27 | Seiko Epson Corp | Rare earch cobalt permanent magnet |
JPH0512047A (en) * | 1991-07-04 | 1993-01-22 | Fujitsu Ltd | Error detecting circuit |
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