JPS54144136A - Lsi output control system - Google Patents
Lsi output control systemInfo
- Publication number
- JPS54144136A JPS54144136A JP5313578A JP5313578A JPS54144136A JP S54144136 A JPS54144136 A JP S54144136A JP 5313578 A JP5313578 A JP 5313578A JP 5313578 A JP5313578 A JP 5313578A JP S54144136 A JPS54144136 A JP S54144136A
- Authority
- JP
- Japan
- Prior art keywords
- ram
- lsi
- address
- content
- reduce
- 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 adverse effect given to the peripheral unit, by performing the replacement processing of the content of the buffer register for peropheral control in a short time similarly as the incorporated RAM bit processing.
CONSTITUTION: In the unit providing the LSI of ROM-RAM system and the peripheral unit controlled with the output of LSI, the buffer registers 3, 4 for liquid crystal display unit control are placed at a part of area of RAM incorporated in LSI. Further, RAM is provided with the address decoders 1, 2, the decoder 2 decodes the address and selects the data, the content of the registers 3, 4 is made time-sharing process with the time sharing signals H1' to H4' to output to the segment buffers 5, 6 via the lines xi to yi. Further, the decoders 1, 2, are constituted so that arbitrary address can be designated with the instruction from ROM similar to the other RAM area(operational use) to reduce the effect to the display unit.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5313578A JPS54144136A (en) | 1978-04-28 | 1978-04-28 | Lsi output control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5313578A JPS54144136A (en) | 1978-04-28 | 1978-04-28 | Lsi output control system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54144136A true JPS54144136A (en) | 1979-11-10 |
JPS628810B2 JPS628810B2 (en) | 1987-02-25 |
Family
ID=12934369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5313578A Granted JPS54144136A (en) | 1978-04-28 | 1978-04-28 | Lsi output control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54144136A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51142233A (en) * | 1975-04-07 | 1976-12-07 | Texas Instruments Inc | Digital indicator |
JPS5279833A (en) * | 1975-12-26 | 1977-07-05 | Casio Comput Co Ltd | Display system |
JPS52155939A (en) * | 1976-06-21 | 1977-12-24 | Hitachi Ltd | Control system for micro program |
-
1978
- 1978-04-28 JP JP5313578A patent/JPS54144136A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51142233A (en) * | 1975-04-07 | 1976-12-07 | Texas Instruments Inc | Digital indicator |
JPS5279833A (en) * | 1975-12-26 | 1977-07-05 | Casio Comput Co Ltd | Display system |
JPS52155939A (en) * | 1976-06-21 | 1977-12-24 | Hitachi Ltd | Control system for micro program |
Also Published As
Publication number | Publication date |
---|---|
JPS628810B2 (en) | 1987-02-25 |
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