JPS5578343A - Information processing unit - Google Patents

Information processing unit

Info

Publication number
JPS5578343A
JPS5578343A JP15192878A JP15192878A JPS5578343A JP S5578343 A JPS5578343 A JP S5578343A JP 15192878 A JP15192878 A JP 15192878A JP 15192878 A JP15192878 A JP 15192878A JP S5578343 A JPS5578343 A JP S5578343A
Authority
JP
Japan
Prior art keywords
instruction
registers
register
instruction execution
microprogram
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
JP15192878A
Other languages
Japanese (ja)
Inventor
Akira Koda
Fumitaka Sato
Shinji Nishibe
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15192878A priority Critical patent/JPS5578343A/en
Priority to US06/100,447 priority patent/US4347566A/en
Publication of JPS5578343A publication Critical patent/JPS5578343A/en
Pending legal-status Critical Current

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  • Executing Machine-Instructions (AREA)

Abstract

PURPOSE: To shorten an instruction execution cycle time by driving directly the address signal of the register file of a CPU, which is constituted by a microprocessor, by the register output.
CONSTITUTION: The addressing signal of the register file in a microprocessor is driven directly by outputs of registers GRA19 and GRB20. In a micro step just before instruction word processing start, a field used for a general register command in the instruction word is inputted to registers 19 and 20. As the result, the clock cycle of the CPU in instruction execution becomes rapid, and it is unnecessary that a part of the instruction is transferred to registers 19 and 20 by a microprogram, and further, the instruction execution cycle time can be shortened by accessing general register GR designated by the instrcution immediately in the microprogram of the instruction processing.
COPYRIGHT: (C)1980,JPO&Japio
JP15192878A 1978-12-11 1978-12-11 Information processing unit Pending JPS5578343A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP15192878A JPS5578343A (en) 1978-12-11 1978-12-11 Information processing unit
US06/100,447 US4347566A (en) 1978-12-11 1979-12-05 Data processor with register file and arithmetic logic circuit on one chip and register means directly connected to the chip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15192878A JPS5578343A (en) 1978-12-11 1978-12-11 Information processing unit

Publications (1)

Publication Number Publication Date
JPS5578343A true JPS5578343A (en) 1980-06-12

Family

ID=15529256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15192878A Pending JPS5578343A (en) 1978-12-11 1978-12-11 Information processing unit

Country Status (1)

Country Link
JP (1) JPS5578343A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107138A (en) * 1983-10-03 1985-06-12 デイジタル　イクイツプメント　コ−ポレイシヨン Central processing unit for digital computer
US4812971A (en) * 1983-10-03 1989-03-14 Digital Equipment Corporation Central processing unit for a digital computer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60107138A (en) * 1983-10-03 1985-06-12 デイジタル　イクイツプメント　コ−ポレイシヨン Central processing unit for digital computer
JPS6339931B2 (en) * 1983-10-03 1988-08-09 Digital Equipment Corp
US4812971A (en) * 1983-10-03 1989-03-14 Digital Equipment Corporation Central processing unit for a digital computer

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