JPS57756A - Data processor - Google Patents

Data processor

Info

Publication number
JPS57756A
JPS57756A JP7435280A JP7435280A JPS57756A JP S57756 A JPS57756 A JP S57756A JP 7435280 A JP7435280 A JP 7435280A JP 7435280 A JP7435280 A JP 7435280A JP S57756 A JPS57756 A JP S57756A
Authority
JP
Japan
Prior art keywords
register
operand
mode
data processor
instruction
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
JP7435280A
Other languages
Japanese (ja)
Other versions
JPS6217773B2 (en
Inventor
Hidekazu Matsumoto
Tadaaki Bando
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7435280A priority Critical patent/JPS57756A/en
Publication of JPS57756A publication Critical patent/JPS57756A/en
Publication of JPS6217773B2 publication Critical patent/JPS6217773B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the memory capacity of a data processor which performs pipeline processing, by executing an operand by the same microinstruction in both register direct mode and memory reference mode.
CONSTITUTION: Between an instruction setup unit 100 and an instruction execution unit 101, a register 300 for communication is provided and when an operand is supplied in register direct mode, the instruction setup unit 100 accesses a general register 114 to transfer and fetch selectively the contents of the register as the operand into the register 300 for communication in advance. When an addressing mode is a memory reference mode, the operand of this register 300 is read into the instruction execution unit 101. Therefore, a microprogram executing instructions is made common.
COPYRIGHT: (C)1982,JPO&Japio
JP7435280A 1980-06-04 1980-06-04 Data processor Granted JPS57756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7435280A JPS57756A (en) 1980-06-04 1980-06-04 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7435280A JPS57756A (en) 1980-06-04 1980-06-04 Data processor

Publications (2)

Publication Number Publication Date
JPS57756A true JPS57756A (en) 1982-01-05
JPS6217773B2 JPS6217773B2 (en) 1987-04-20

Family

ID=13544640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7435280A Granted JPS57756A (en) 1980-06-04 1980-06-04 Data processor

Country Status (1)

Country Link
JP (1) JPS57756A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58146941A (en) * 1982-02-26 1983-09-01 Hitachi Ltd Processor for control data of microprogram
JPS59184948A (en) * 1983-04-04 1984-10-20 Hitachi Ltd Microcomputer of variable structure
JPS61238100A (en) * 1985-04-16 1986-10-23 株式会社日立製作所 Voice input/output unit
JPS61285537A (en) * 1985-06-12 1986-12-16 Hitachi Ltd Data processor by microprogram control
JPS63245523A (en) * 1987-03-31 1988-10-12 Toshiba Corp Microprogram processor
JPH0290325A (en) * 1988-09-28 1990-03-29 Mitsubishi Electric Corp Data processor

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58146941A (en) * 1982-02-26 1983-09-01 Hitachi Ltd Processor for control data of microprogram
JPS6232503B2 (en) * 1982-02-26 1987-07-15 Hitachi Ltd
US4807113A (en) * 1982-02-26 1989-02-21 Hitachi, Ltd. Microprogrammed control data processing apparatus in which operand source and/or operand destination is determined independent of microprogram control
JPS59184948A (en) * 1983-04-04 1984-10-20 Hitachi Ltd Microcomputer of variable structure
JPH0516610B2 (en) * 1983-04-04 1993-03-04 Hitachi Ltd
JPS61238100A (en) * 1985-04-16 1986-10-23 株式会社日立製作所 Voice input/output unit
JPH0567038B2 (en) * 1985-04-16 1993-09-24 Hitachi Ltd
JPS61285537A (en) * 1985-06-12 1986-12-16 Hitachi Ltd Data processor by microprogram control
JPH0514929B2 (en) * 1985-06-12 1993-02-26 Hitachi Seisakusho Kk
JPS63245523A (en) * 1987-03-31 1988-10-12 Toshiba Corp Microprogram processor
JPH0290325A (en) * 1988-09-28 1990-03-29 Mitsubishi Electric Corp Data processor

Also Published As

Publication number Publication date
JPS6217773B2 (en) 1987-04-20

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