JPS5622140A - Branch control system - Google Patents
Branch control systemInfo
- 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
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
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)
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)
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)
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 |
-
1979
- 1979-07-31 JP JP54097961A patent/JPS5822769B2/en not_active Expired
Patent Citations (2)
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)
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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