JPS5448459A - Control unit of instruction advance fetch - Google Patents

Control unit of instruction advance fetch

Info

Publication number
JPS5448459A
JPS5448459A JP11532977A JP11532977A JPS5448459A JP S5448459 A JPS5448459 A JP S5448459A JP 11532977 A JP11532977 A JP 11532977A JP 11532977 A JP11532977 A JP 11532977A JP S5448459 A JPS5448459 A JP S5448459A
Authority
JP
Japan
Prior art keywords
instruction
content
register
alteration
advance
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.)
Granted
Application number
JP11532977A
Other languages
Japanese (ja)
Other versions
JPS6027418B2 (en
Inventor
Kenichi Tsukioka
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP11532977A priority Critical patent/JPS6027418B2/en
Publication of JPS5448459A publication Critical patent/JPS5448459A/en
Publication of JPS6027418B2 publication Critical patent/JPS6027418B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To directly renew the instruction word advanced fetch made ineffective at the stage of execution preparation, by giving the instruction register holding the instruction word fetched in advance and the function rewritten for the instruction buffer to the control circuit, when the instruction word fetched in advance with the preceding instruction.
CONSTITUTION: The instruction register is constituted with at least two blocks, and further, according to the content of the instruction counter 26, the alteration block designation circuit 34 having the function designating vacant blocks from two blocks at least is provided, and according to the operation altering the content of the main memory unit or the high speed buffer memory 11 for the preceding instruction, from the content of the operand address register 27 of preceding instruction and the instruction counter 26, the content alteration instruction of the instruction register 32 and the alteration effective block designation in the instruction register 32 are made, and by enabling to replace only the designated block with the content of the output data register 30, the advance fetch instruction word made ineffective can be renewed directly at the stage of execution
COPYRIGHT: (C)1979,JPO&Japio
JP11532977A 1977-09-26 1977-09-26 Instruction preemption control device Expired JPS6027418B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11532977A JPS6027418B2 (en) 1977-09-26 1977-09-26 Instruction preemption control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11532977A JPS6027418B2 (en) 1977-09-26 1977-09-26 Instruction preemption control device

Publications (2)

Publication Number Publication Date
JPS5448459A true JPS5448459A (en) 1979-04-17
JPS6027418B2 JPS6027418B2 (en) 1985-06-28

Family

ID=14659860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11532977A Expired JPS6027418B2 (en) 1977-09-26 1977-09-26 Instruction preemption control device

Country Status (1)

Country Link
JP (1) JPS6027418B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5795545A (en) * 1996-05-20 1998-08-18 Motorola Inc. Integrated ceramic exhaust gas sensors

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61192414U (en) * 1985-05-22 1986-11-29

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5795545A (en) * 1996-05-20 1998-08-18 Motorola Inc. Integrated ceramic exhaust gas sensors

Also Published As

Publication number Publication date
JPS6027418B2 (en) 1985-06-28

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