JPS5622140A - Branch control system - Google Patents

Branch control system

Info

Publication number
JPS5622140A
JPS5622140A JP9796179A JP9796179A JPS5622140A JP S5622140 A JPS5622140 A JP S5622140A JP 9796179 A JP9796179 A JP 9796179A JP 9796179 A JP9796179 A JP 9796179A JP S5622140 A JPS5622140 A JP S5622140A
Authority
JP
Japan
Prior art keywords
latch
operand
branch
condition code
operands
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
JP9796179A
Other languages
Japanese (ja)
Other versions
JPS5822769B2 (en
Inventor
Kazuyuki Shimizu
Shigemi Uemoto
Shigeaki Okuya
Yuji Oinaga
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP54097961A priority Critical patent/JPS5822769B2/en
Publication of JPS5622140A publication Critical patent/JPS5622140A/en
Publication of JPS5822769B2 publication Critical patent/JPS5822769B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To reduce greatly the processing time for the branch instruction, by predicting the period when the condition code is set up and then cancelling the queuing state of the branch instruction process before the condition code is decided finally.
CONSTITUTION: The branch control circuit consists of the following component units: operation code part 16; operand-1 register 9; operand word register 10; arithmetic process part 11 (consisting of circuits 17 and 18 detecting whether bits 8W11 of the 2nd and 1st operands is "0" or not plus PRECCVALID detecting circuit 19); condition code interlocking CCI latch 20; release latch 21; and others. In case bits 8W11 of the 2nd and 1st operands are detected at 17 and 18 not to be "0" each and operand part 16 means the branch order which uses the condition bit designated by the immediately preceding instruction, latch 20 is reset immediately to turn off the CCI signal. And latch 21 is turned on after one machine cycle, and then the RELEASE signal is turned on.
COPYRIGHT: (C)1981,JPO&Japio
JP54097961A 1979-07-31 1979-07-31 Branch control method Expired JPS5822769B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54097961A JPS5822769B2 (en) 1979-07-31 1979-07-31 Branch control method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54097961A JPS5822769B2 (en) 1979-07-31 1979-07-31 Branch control method

Publications (2)

Publication Number Publication Date
JPS5622140A true JPS5622140A (en) 1981-03-02
JPS5822769B2 JPS5822769B2 (en) 1983-05-11

Family

ID=14206260

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54097961A Expired JPS5822769B2 (en) 1979-07-31 1979-07-31 Branch control method

Country Status (1)

Country Link
JP (1) JPS5822769B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860355A (en) * 1981-10-07 1983-04-09 Nec Corp Information processing device
US11106466B2 (en) * 2018-06-18 2021-08-31 International Business Machines Corporation Decoupling of conditional branches

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60257199A (en) * 1984-06-01 1985-12-18 日立電子エンジニアリング株式会社 Device for positioning thin ic
JPS62114291A (en) * 1985-11-14 1987-05-26 三洋電機株式会社 Mounting device of chip electronic parts
JPS6396997A (en) * 1986-10-14 1988-04-27 日立電子エンジニアリング株式会社 Electric circuit board aligner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979744A (en) * 1972-12-08 1974-08-01
JPS522140A (en) * 1975-06-24 1977-01-08 Hitachi Ltd Information processing apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979744A (en) * 1972-12-08 1974-08-01
JPS522140A (en) * 1975-06-24 1977-01-08 Hitachi Ltd Information processing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860355A (en) * 1981-10-07 1983-04-09 Nec Corp Information processing device
US11106466B2 (en) * 2018-06-18 2021-08-31 International Business Machines Corporation Decoupling of conditional branches

Also Published As

Publication number Publication date
JPS5822769B2 (en) 1983-05-11

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