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JPS5614357A - Diagnostic control unit - Google Patents

Diagnostic control unit

Info

Publication number
JPS5614357A
JPS5614357A JP9015879A JP9015879A JPS5614357A JP S5614357 A JPS5614357 A JP S5614357A JP 9015879 A JP9015879 A JP 9015879A JP 9015879 A JP9015879 A JP 9015879A JP S5614357 A JPS5614357 A JP S5614357A
Authority
JP
Japan
Prior art keywords
register
microinstruction
shift
diagnostic
mode
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
Application number
JP9015879A
Other languages
Japanese (ja)
Inventor
Sumio Ozawa
Hiroshi Izumi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9015879A priority Critical patent/JPS5614357A/en
Publication of JPS5614357A publication Critical patent/JPS5614357A/en
Pending legal-status Critical Current

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  • Test And Diagnosis Of Digital Computers (AREA)

Abstract

PURPOSE: To make kinds of counter and multiplexer, which are required for diagnostic control conventionally, needless to reduce the number of additional circuits, by constituting the microinstruction address register and the microinstruction register of the diagnostic control unit by shift registers.
CONSTITUTION: A diagnostic control unit is constituted by diagnostic mode control circuit 50, microinstruction address register 20 constituted by a shift register, control memory 30, and microinstruction register 40 constituted by a shift register. In case of the normal execution mode, output 25 to designate the address where an executed instruction is stored is sent by register 20, and microinstruction 31 read out from memory 30 is stored in register 40 as a parallel load mode. When circuit 50 is set to the diagnostic mode, register 20 is set to the shift mode by signal 51, and shift clock 22 and serial data 21 are applied from the external, and data 21 is fetched bit by bit to output the read address for memory 30, and instruction 31 is stored in register 40.
COPYRIGHT: (C)1981,JPO&Japio
JP9015879A 1979-07-16 1979-07-16 Diagnostic control unit Pending JPS5614357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9015879A JPS5614357A (en) 1979-07-16 1979-07-16 Diagnostic control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9015879A JPS5614357A (en) 1979-07-16 1979-07-16 Diagnostic control unit

Publications (1)

Publication Number Publication Date
JPS5614357A true JPS5614357A (en) 1981-02-12

Family

ID=13990678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9015879A Pending JPS5614357A (en) 1979-07-16 1979-07-16 Diagnostic control unit

Country Status (1)

Country Link
JP (1) JPS5614357A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03196231A (en) * 1989-12-25 1991-08-27 Fujitsu Ltd Information processor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5178142A (en) * 1974-12-20 1976-07-07 Ibm
JPS5184530A (en) * 1974-12-20 1976-07-23 Ibm Memori areino chokusetsutekitesutookanonishita lsi handotaidebaisu
JPS5443433A (en) * 1977-09-12 1979-04-06 Fujitsu Ltd Memory element designation system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5178142A (en) * 1974-12-20 1976-07-07 Ibm
JPS5184530A (en) * 1974-12-20 1976-07-23 Ibm Memori areino chokusetsutekitesutookanonishita lsi handotaidebaisu
JPS5443433A (en) * 1977-09-12 1979-04-06 Fujitsu Ltd Memory element designation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03196231A (en) * 1989-12-25 1991-08-27 Fujitsu Ltd Information processor

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