JPS6410355A - Video memory device - Google Patents
Video memory deviceInfo
- Publication number
- JPS6410355A JPS6410355A JP16652087A JP16652087A JPS6410355A JP S6410355 A JPS6410355 A JP S6410355A JP 16652087 A JP16652087 A JP 16652087A JP 16652087 A JP16652087 A JP 16652087A JP S6410355 A JPS6410355 A JP S6410355A
- Authority
- JP
- Japan
- Prior art keywords
- address
- bit
- host cpu
- data
- outputted
- 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
Landscapes
- Digital Computer Display Output (AREA)
- Image Input (AREA)
Abstract
PURPOSE:To shorten the processing time in processing only a part of area of a screen by setting individually the content of address conversion from a host CPU as a data of a host CPU. CONSTITUTION:Gates 16, 24 are closed, a gate 26 is opened and an m-bit address signal is outputted to an address bus 10 from the host CPU and an n-bit address value is outputted to a data bus 14 and an n-bit address is written in an address conversion circuit 20 by using an m-bit address signal. The address conversion circuit 20 stores the accessing address to a picture memory to an area of the m-bit address as the n-bit data. In accessing the picture memory for the host CPU, the gates 16, 24 are closed and a gate 24 is opened. When the host CPU makes access to the address conversion circuit 20 by the m-bit consecutive address, the n-bit picture data to be stored is outputted to a line 10A of the picture memory.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16652087A JPS6410355A (en) | 1987-07-03 | 1987-07-03 | Video memory device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16652087A JPS6410355A (en) | 1987-07-03 | 1987-07-03 | Video memory device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6410355A true JPS6410355A (en) | 1989-01-13 |
Family
ID=15832842
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16652087A Pending JPS6410355A (en) | 1987-07-03 | 1987-07-03 | Video memory device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6410355A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5245403A (en) * | 1990-12-27 | 1993-09-14 | Hitachi Electronics Engineering Co., Ltd. | Apparatus for detecting extraneous substances on a glass plate |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58201159A (en) * | 1982-05-19 | 1983-11-22 | Matsushita Electric Ind Co Ltd | Address converter |
JPS5963097A (en) * | 1982-09-30 | 1984-04-10 | Panafacom Ltd | Memory protection system using address comparison |
-
1987
- 1987-07-03 JP JP16652087A patent/JPS6410355A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58201159A (en) * | 1982-05-19 | 1983-11-22 | Matsushita Electric Ind Co Ltd | Address converter |
JPS5963097A (en) * | 1982-09-30 | 1984-04-10 | Panafacom Ltd | Memory protection system using address comparison |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5245403A (en) * | 1990-12-27 | 1993-09-14 | Hitachi Electronics Engineering Co., Ltd. | Apparatus for detecting extraneous substances on a glass plate |
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