JPS5599655A - Branch control unit - Google Patents

Branch control unit

Info

Publication number
JPS5599655A
JPS5599655A JP703379A JP703379A JPS5599655A JP S5599655 A JPS5599655 A JP S5599655A JP 703379 A JP703379 A JP 703379A JP 703379 A JP703379 A JP 703379A JP S5599655 A JPS5599655 A JP S5599655A
Authority
JP
Japan
Prior art keywords
order
branch
address
buffer
branch destination
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
JP703379A
Other languages
Japanese (ja)
Inventor
Tetsunori Nishimoto
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP703379A priority Critical patent/JPS5599655A/en
Publication of JPS5599655A publication Critical patent/JPS5599655A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To increase the speed for the branch order by bringing the orders of the branch destination to the order buffer as much as possible at the time point when the branch order is decoded with the directory prepared.
CONSTITUTION: In case the order is taken into order buffer 34, directory 25 is referred with the contents of order address register 37. If some coincidence is detected, the branch destination is set to other register 37 and the orders of the branch destination are brought to corresponding order buffer 35. Otherwise directory 25 is consulted via program counter 42 which holds the order address under being decoded to read out the address of the several-step preceding branch order plus the address of the branch destination and then to be set to other register 37. And the branch destination is brought to corresponding buffer 35 before the branch order is decoded.
COPYRIGHT: (C)1980,JPO&Japio
JP703379A 1979-01-26 1979-01-26 Branch control unit Pending JPS5599655A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP703379A JPS5599655A (en) 1979-01-26 1979-01-26 Branch control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP703379A JPS5599655A (en) 1979-01-26 1979-01-26 Branch control unit

Publications (1)

Publication Number Publication Date
JPS5599655A true JPS5599655A (en) 1980-07-29

Family

ID=11654720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP703379A Pending JPS5599655A (en) 1979-01-26 1979-01-26 Branch control unit

Country Status (1)

Country Link
JP (1) JPS5599655A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991552A (en) * 1982-11-17 1984-05-26 Nec Corp Instruction prefetch device having set associative type history table
JPS5991553A (en) * 1982-11-17 1984-05-26 Nec Corp Instruction prefetch device having real address branching history table
JPS5991554A (en) * 1982-11-17 1984-05-26 Nec Corp Instruction prefetch device forecasting branch direction
JPS60175148A (en) * 1984-02-21 1985-09-09 Nec Corp Instruction prefetching device
JPS6195447A (en) * 1984-10-12 1986-05-14 エイ・ティ・アンド・ティ・コーポレーション Microprocessor haing macro rom and program queue

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5991552A (en) * 1982-11-17 1984-05-26 Nec Corp Instruction prefetch device having set associative type history table
JPS5991553A (en) * 1982-11-17 1984-05-26 Nec Corp Instruction prefetch device having real address branching history table
JPS5991554A (en) * 1982-11-17 1984-05-26 Nec Corp Instruction prefetch device forecasting branch direction
JPS60175148A (en) * 1984-02-21 1985-09-09 Nec Corp Instruction prefetching device
JPS6195447A (en) * 1984-10-12 1986-05-14 エイ・ティ・アンド・ティ・コーポレーション Microprocessor haing macro rom and program queue

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