JPS5537656A - Microprogram control system - Google Patents
Microprogram control systemInfo
- Publication number
- JPS5537656A JPS5537656A JP11050978A JP11050978A JPS5537656A JP S5537656 A JPS5537656 A JP S5537656A JP 11050978 A JP11050978 A JP 11050978A JP 11050978 A JP11050978 A JP 11050978A JP S5537656 A JPS5537656 A JP S5537656A
- Authority
- JP
- Japan
- Prior art keywords
- memory unit
- unit
- stored
- instruction
- address information
- 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
Landscapes
- Executing Machine-Instructions (AREA)
Abstract
PURPOSE: To reduce the required capacity of a memory unit by providing a 1st memory unit stored with microprograms and a 2nd memory unit stored with its address information.
CONSTITUTION: An instruction from main memory unit MM is transferred to instruction register IR and by using function part (f) of the instruction as address information, parts P1 and P2, and control information P3 are simultaneously read out from 2nd memory unit CMA and supplied to address controller CM-CTL. Corresponding to the contents of part P3, CM-CTL sends parts P1 and P2 to the 1st memory unit CM stored with microprogram μPG and its contents are read out to control information register CMR to control arithmetic part ALU. A common arithmetic program of several instructions is made into a subroutine and stored in fixed addresses of unit CM and after this is executed in sequence, individual μPG of unit CM is executed by address information assigned by unit CMA. Consequently, the required capacity of unit CM can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11050978A JPS6051738B2 (en) | 1978-09-08 | 1978-09-08 | Microprogram control method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11050978A JPS6051738B2 (en) | 1978-09-08 | 1978-09-08 | Microprogram control method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5537656A true JPS5537656A (en) | 1980-03-15 |
JPS6051738B2 JPS6051738B2 (en) | 1985-11-15 |
Family
ID=14537575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11050978A Expired JPS6051738B2 (en) | 1978-09-08 | 1978-09-08 | Microprogram control method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6051738B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57199046A (en) * | 1981-06-03 | 1982-12-06 | Mitsubishi Electric Corp | Microprogram controlling method |
JPS58115548A (en) * | 1981-12-29 | 1983-07-09 | Fujitsu Ltd | Microprogram controlling system |
JPS5938853A (en) * | 1982-08-27 | 1984-03-02 | Nec Corp | Information processing device |
JPS59174947A (en) * | 1983-03-25 | 1984-10-03 | Fujitsu Ltd | System for controlling order of microprogram |
-
1978
- 1978-09-08 JP JP11050978A patent/JPS6051738B2/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57199046A (en) * | 1981-06-03 | 1982-12-06 | Mitsubishi Electric Corp | Microprogram controlling method |
JPS58115548A (en) * | 1981-12-29 | 1983-07-09 | Fujitsu Ltd | Microprogram controlling system |
JPS6226727B2 (en) * | 1981-12-29 | 1987-06-10 | Fujitsu Ltd | |
JPS5938853A (en) * | 1982-08-27 | 1984-03-02 | Nec Corp | Information processing device |
JPH0128965B2 (en) * | 1982-08-27 | 1989-06-07 | Nippon Electric Co | |
JPS59174947A (en) * | 1983-03-25 | 1984-10-03 | Fujitsu Ltd | System for controlling order of microprogram |
JPH0332814B2 (en) * | 1983-03-25 | 1991-05-14 | Fujitsu Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6051738B2 (en) | 1985-11-15 |
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