JPS5471952A - Data processing unit - Google Patents
Data processing unitInfo
- Publication number
- JPS5471952A JPS5471952A JP13863177A JP13863177A JPS5471952A JP S5471952 A JPS5471952 A JP S5471952A JP 13863177 A JP13863177 A JP 13863177A JP 13863177 A JP13863177 A JP 13863177A JP S5471952 A JPS5471952 A JP S5471952A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- ffs
- state
- request
- control
- 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 make it possible to generate a microprogram without consideration of restrictive conditions of a main memory by controlling the memory access for the main memory dependently upon the state of FFs of a condition setting circuit and a micro instruction from a control memory.
CONSTITUTION: Main memory 5 has a page mode access function, and control memory 18 stores first memory accessing micro instructions to request a line address set and second memory accessing micro instructions to request a row address set, and further. condition setting circuit 23 has plural FFs and accepts various memory access request signals. Here, a prescribed memory access control is performed for memory 5 at a prescribed time on a basis of the state of FFs of circuit 23 and the first or the second memory accessing micro instruction read from memory 18 or the state of FFs. As a result, a microprogram can be generated without consideration of restrictive conditions of memory 5.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13863177A JPS5471952A (en) | 1977-11-18 | 1977-11-18 | Data processing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13863177A JPS5471952A (en) | 1977-11-18 | 1977-11-18 | Data processing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5471952A true JPS5471952A (en) | 1979-06-08 |
Family
ID=15226558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13863177A Pending JPS5471952A (en) | 1977-11-18 | 1977-11-18 | Data processing unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5471952A (en) |
-
1977
- 1977-11-18 JP JP13863177A patent/JPS5471952A/en active Pending
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