JPS57756A - Data processor - Google Patents
Data processorInfo
- 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
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
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)
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 |
-
1980
- 1980-06-04 JP JP7435280A patent/JPS57756A/en active Granted
Cited By (11)
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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