JPS5642857A - Address control device - Google Patents
Address control deviceInfo
- Publication number
- JPS5642857A JPS5642857A JP11897779A JP11897779A JPS5642857A JP S5642857 A JPS5642857 A JP S5642857A JP 11897779 A JP11897779 A JP 11897779A JP 11897779 A JP11897779 A JP 11897779A JP S5642857 A JPS5642857 A JP S5642857A
- Authority
- JP
- Japan
- Prior art keywords
- field
- contents
- selection
- address
- microinstruction
- 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
Links
Abstract
PURPOSE: To prevent the increase of the microinstruction length, by securing the working of the selected field of the microinstruction register as both the address part and the register selection part each.
CONSTITUTION: The microinstruction given from the control memory 22 is stored in the microinstruction register 11 containing the operation field OP, the mask field MSR, the selection field A&S and the address field ADR each. Then either one of the higher-rank and lower-rank bits of the mask register 13 is selected through the selection circuit 30 according to the contents of the field A&S. After this, either one of the output of the circuit 30 and the contents of the field A&S is selected by the selection circuit 40 according to the contents of the field MSR. Receiving this selection result, the address selection circuit 12 selects either one of this result and the contents of the field ADR according to the contents of the field OP and then gives it to the control memory circuit 22 in the form of the address. Thus the increase of the order length can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11897779A JPS5642857A (en) | 1979-09-17 | 1979-09-17 | Address control device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11897779A JPS5642857A (en) | 1979-09-17 | 1979-09-17 | Address control device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5642857A true JPS5642857A (en) | 1981-04-21 |
Family
ID=14749955
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11897779A Pending JPS5642857A (en) | 1979-09-17 | 1979-09-17 | Address control device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5642857A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60139446A (en) * | 1983-12-27 | 1985-07-24 | 東海金属株式会社 | Delustered evaporated sheet |
JPS62109134A (en) * | 1985-11-08 | 1987-05-20 | Nec Corp | Microprogram controller |
-
1979
- 1979-09-17 JP JP11897779A patent/JPS5642857A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60139446A (en) * | 1983-12-27 | 1985-07-24 | 東海金属株式会社 | Delustered evaporated sheet |
JPS6313830B2 (en) * | 1983-12-27 | 1988-03-28 | Tokai Kinzoku Kk | |
JPS62109134A (en) * | 1985-11-08 | 1987-05-20 | Nec Corp | Microprogram controller |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5248440A (en) | Memory access control system | |
JPS5621240A (en) | Information processor | |
JPS52122786A (en) | Sequence controlling system | |
JPS52103921A (en) | Data processing unit | |
JPS55149545A (en) | Receiver for individual selection and call-out | |
JPS5344134A (en) | Microprogram control system | |
JPS51118341A (en) | Shift register type memory | |
JPS54117640A (en) | Memory address designation system | |
JPS5642857A (en) | Address control device | |
JPS5676865A (en) | Microprocessor system | |
JPS5424547A (en) | Control system for memory extension | |
JPS5552137A (en) | Character output system | |
JPS5437646A (en) | Program loading system | |
JPS5658196A (en) | Memory device having memory part for test | |
JPS57125427A (en) | Circuit for transmitting simultaneously command signal | |
JPS5617438A (en) | Program sequencer | |
JPS5439542A (en) | Microprogram control system | |
JPS5599652A (en) | Microprogram control unit | |
JPS52107744A (en) | Program control order circuit | |
JPS5617402A (en) | Programmable sequence controller | |
JPS551675A (en) | Memory protect control system | |
JPS5440535A (en) | Interface circuit for microcomputer | |
JPS5368138A (en) | Interrupt priority determining circuit | |
JPS54149439A (en) | Sequence control circuit | |
JPS5523588A (en) | Micro program control unit |