JPS6410355A - Video memory device - Google Patents

Video memory device

Info

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
Application number
JP16652087A
Other languages
Japanese (ja)
Inventor
Kazuto Nishiyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP16652087A priority Critical patent/JPS6410355A/en
Publication of JPS6410355A publication Critical patent/JPS6410355A/en
Pending legal-status Critical Current

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.
JP16652087A 1987-07-03 1987-07-03 Video memory device Pending JPS6410355A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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