JPS5674738A - Transfer system of display data - Google Patents

Transfer system of display data

Info

Publication number
JPS5674738A
JPS5674738A JP14996279A JP14996279A JPS5674738A JP S5674738 A JPS5674738 A JP S5674738A JP 14996279 A JP14996279 A JP 14996279A JP 14996279 A JP14996279 A JP 14996279A JP S5674738 A JPS5674738 A JP S5674738A
Authority
JP
Japan
Prior art keywords
interruption
display data
access
crt
time
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
JP14996279A
Other languages
Japanese (ja)
Inventor
Hajime Hirano
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14996279A priority Critical patent/JPS5674738A/en
Publication of JPS5674738A publication Critical patent/JPS5674738A/en
Pending legal-status Critical Current

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  • Digital Computer Display Output (AREA)

Abstract

PURPOSE: To shorten an operator's queuing time by accessing a signal from the interruption control to the refresh memory when it is significant, in the transfer system for controlling a display data by means of interruption.
CONSTITUTION: A character is read out under the control of the CRT controller 4, and it is displayed by the display unit 5. When an interruption request signal is sent from the programable timer 2, the interruption control unit 8 decides whether the access to the CRT control part of CPU1 is allowed or not, in response to the interruption request signal from other input/output controller 7. When the access is allowed, a display data is transferred between PU1 and the display refresh memory. Since the interruption request can be made earlier by the time required for the interruption processing time, etc., the effective use of the time which is able to access to the CRT control part from CPU1 can be realized, and also the efficient service of CPU can be executed.
COPYRIGHT: (C)1981,JPO&Japio
JP14996279A 1979-11-21 1979-11-21 Transfer system of display data Pending JPS5674738A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14996279A JPS5674738A (en) 1979-11-21 1979-11-21 Transfer system of display data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14996279A JPS5674738A (en) 1979-11-21 1979-11-21 Transfer system of display data

Publications (1)

Publication Number Publication Date
JPS5674738A true JPS5674738A (en) 1981-06-20

Family

ID=15486402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14996279A Pending JPS5674738A (en) 1979-11-21 1979-11-21 Transfer system of display data

Country Status (1)

Country Link
JP (1) JPS5674738A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169935A (en) * 1984-02-14 1985-09-03 Ascii Corp Display controller
JPS60173580A (en) * 1984-02-20 1985-09-06 株式会社アスキ− Display controller
JPS62163093A (en) * 1986-01-13 1987-07-18 三菱電機株式会社 Microcomputer apparatus
JPS62191880A (en) * 1986-02-18 1987-08-22 日本電気株式会社 Data control system for screen memory

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60169935A (en) * 1984-02-14 1985-09-03 Ascii Corp Display controller
JPS60173580A (en) * 1984-02-20 1985-09-06 株式会社アスキ− Display controller
JPS62163093A (en) * 1986-01-13 1987-07-18 三菱電機株式会社 Microcomputer apparatus
JPS62191880A (en) * 1986-02-18 1987-08-22 日本電気株式会社 Data control system for screen memory

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