JPS55108048A - Buffer memory access system for display - Google Patents
Buffer memory access system for displayInfo
- Publication number
- JPS55108048A JPS55108048A JP1565679A JP1565679A JPS55108048A JP S55108048 A JPS55108048 A JP S55108048A JP 1565679 A JP1565679 A JP 1565679A JP 1565679 A JP1565679 A JP 1565679A JP S55108048 A JPS55108048 A JP S55108048A
- Authority
- JP
- Japan
- Prior art keywords
- buffer memory
- display
- controller
- memory
- character
- 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
- Digital Computer Display Output (AREA)
Abstract
PURPOSE: To enable to perform the color display in mixing with character and graph, by storing a part of the graphic code and character code to the first buffer memory and the graphic code to the second buffer memory.
CONSTITUTION: The character code or graphic code of the buffer memory 2 from CPU1 is written in the buffer memory 13. If the content of the memory 2 is character code, this content is separated into the dot pattern with the character generator 3 and transferred and displayed on the monitor TV7. On the other hand, if the content of the memory 2 is graphic code, it is judged for upper or lower part of the display space, and when it is upper display, data is delivered to the grahpic controller 4. If judged as lower display, the multiplexer 14 is selected with the signal from the controller 4, the data from the memory 13 is read out and delivered to the controller 4. The data in the controller 4 is displayed on the monitor TV via the multiplexer 6.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1565679A JPS55108048A (en) | 1979-02-14 | 1979-02-14 | Buffer memory access system for display |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1565679A JPS55108048A (en) | 1979-02-14 | 1979-02-14 | Buffer memory access system for display |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55108048A true JPS55108048A (en) | 1980-08-19 |
JPS6161117B2 JPS6161117B2 (en) | 1986-12-24 |
Family
ID=11894764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1565679A Granted JPS55108048A (en) | 1979-02-14 | 1979-02-14 | Buffer memory access system for display |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55108048A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6292070A (en) * | 1985-10-18 | 1987-04-27 | Canon Inc | Memory system for picture data |
JPH01321578A (en) * | 1988-06-23 | 1989-12-27 | Sharp Corp | Picture display system |
-
1979
- 1979-02-14 JP JP1565679A patent/JPS55108048A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6292070A (en) * | 1985-10-18 | 1987-04-27 | Canon Inc | Memory system for picture data |
JPH01321578A (en) * | 1988-06-23 | 1989-12-27 | Sharp Corp | Picture display system |
Also Published As
Publication number | Publication date |
---|---|
JPS6161117B2 (en) | 1986-12-24 |
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