JPS5734238A - Write address designation circuit for character generating memory device - Google Patents

Write address designation circuit for character generating memory device

Info

Publication number
JPS5734238A
JPS5734238A JP10794380A JP10794380A JPS5734238A JP S5734238 A JPS5734238 A JP S5734238A JP 10794380 A JP10794380 A JP 10794380A JP 10794380 A JP10794380 A JP 10794380A JP S5734238 A JPS5734238 A JP S5734238A
Authority
JP
Japan
Prior art keywords
signal
ram3
memory device
address
write
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
JP10794380A
Other languages
Japanese (ja)
Inventor
Isao Tamaki
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP10794380A priority Critical patent/JPS5734238A/en
Publication of JPS5734238A publication Critical patent/JPS5734238A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplify address designation by feeding pulses to a counter installed to a character generating memory device to count up the pulses and supplying a write address signal from the counter to the memory device.
CONSTITUTION: A counter 4 counts up a one bit signal from an I/O board 1 and the counted value is fed to a character generating memory device RAM3 as a write address signal ADW through a switching circuit 5. A character data signal D from the board 1 is fed to the RAM3 through the switching circuit 6. The circuits 5 and 6 are controlled by a READ/WRITE control signal R/W from the board 1; the circuits are turned on at WRITE and the signal D is written in the address of RAM3 specified by the signal ADW. At READ, a scanning read address signal ADR from a character generator 2 is fed to the RAM3 and the signal D read out from the RAM3 is supplied to a monitor image receiver 8 through the generator 2 and an encoder 7. Thus, the address is easily designated only by feeding a one-bit signal through a line.
COPYRIGHT: (C)1982,JPO&Japio
JP10794380A 1980-08-06 1980-08-06 Write address designation circuit for character generating memory device Pending JPS5734238A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10794380A JPS5734238A (en) 1980-08-06 1980-08-06 Write address designation circuit for character generating memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10794380A JPS5734238A (en) 1980-08-06 1980-08-06 Write address designation circuit for character generating memory device

Publications (1)

Publication Number Publication Date
JPS5734238A true JPS5734238A (en) 1982-02-24

Family

ID=14471975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10794380A Pending JPS5734238A (en) 1980-08-06 1980-08-06 Write address designation circuit for character generating memory device

Country Status (1)

Country Link
JP (1) JPS5734238A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60156804A (en) * 1984-01-26 1985-08-17 テイヒュー株式会社 Water permeable concrete block
JPS63233102A (en) * 1987-03-19 1988-09-28 株式会社　中山製鋼所 Water permeable paving block, its production and water permeable paving method using said block

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60156804A (en) * 1984-01-26 1985-08-17 テイヒュー株式会社 Water permeable concrete block
JPH02481B2 (en) * 1984-01-26 1990-01-08 Teikoku Hume Pipe
JPS63233102A (en) * 1987-03-19 1988-09-28 株式会社　中山製鋼所 Water permeable paving block, its production and water permeable paving method using said block
JP2530645B2 (en) * 1987-03-19 1996-09-04 株式会社 中山製鋼所 Block for permeable pavement, method for producing the same and permeable pavement method using the same

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