JPS5599653A - Microprogram control system - Google Patents
Microprogram control systemInfo
- Publication number
- JPS5599653A JPS5599653A JP686779A JP686779A JPS5599653A JP S5599653 A JPS5599653 A JP S5599653A JP 686779 A JP686779 A JP 686779A JP 686779 A JP686779 A JP 686779A JP S5599653 A JPS5599653 A JP S5599653A
- Authority
- JP
- Japan
- Prior art keywords
- microorder
- rom4
- selector
- execution
- address
- 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 increase the processing speed for execution of the user order by securing the simultaneous selection for both contents of the main memory means and the map memory means.
CONSTITUTION: The operation code part of the user order designates simultaneously the address of both map read-only memory MAPROM2 and main memory ROM4, and then transfers the data of the designated address in MAPROM2 to selector 7 and the microorder of the designated address in ROM4 to decoder 6 and selector 7 each in order to process the user order. In case the processing is impossible with one microorder, +1 is given to ROM address register 5 via the microorder read out of ROM4 via selector 7 and by the output of decoder 6 to read out the microorder of ROM4 until the second execution process completes with every execution of the microorder. As a result, ROM4 can be designated directly through the operation code part of the user.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP686779A JPS5599653A (en) | 1979-01-24 | 1979-01-24 | Microprogram control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP686779A JPS5599653A (en) | 1979-01-24 | 1979-01-24 | Microprogram control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5599653A true JPS5599653A (en) | 1980-07-29 |
Family
ID=11650181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP686779A Pending JPS5599653A (en) | 1979-01-24 | 1979-01-24 | Microprogram control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5599653A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6375833A (en) * | 1986-09-18 | 1988-04-06 | Toshiba Corp | Information processor |
-
1979
- 1979-01-24 JP JP686779A patent/JPS5599653A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6375833A (en) * | 1986-09-18 | 1988-04-06 | Toshiba Corp | Information processor |
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