JPS5697128A - Data processor with display device - Google Patents

Data processor with display device

Info

Publication number
JPS5697128A
JPS5697128A JP17267079A JP17267079A JPS5697128A JP S5697128 A JPS5697128 A JP S5697128A JP 17267079 A JP17267079 A JP 17267079A JP 17267079 A JP17267079 A JP 17267079A JP S5697128 A JPS5697128 A JP S5697128A
Authority
JP
Japan
Prior art keywords
display
cpu11
cpu
bus
buffer
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
JP17267079A
Other languages
Japanese (ja)
Inventor
Hideki Ohara
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.)
Advantest Corp
Original Assignee
Advantest Corp
Takeda Riken Industries 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 Advantest Corp, Takeda Riken Industries Co Ltd filed Critical Advantest Corp
Priority to JP17267079A priority Critical patent/JPS5697128A/en
Publication of JPS5697128A publication Critical patent/JPS5697128A/en
Pending legal-status Critical Current

Links

Landscapes

  • Bus Control (AREA)
  • Digital Computer Display Output (AREA)

Abstract

PURPOSE: To enable the processing of instruction without interruption to CPU, by monitoring and detecting the state where CPU does not use the bus, in a display control device, and directly fetching the display data and displaying it through the use of memories possible for write-in/readout even with this state.
CONSTITUTION: Between the the data processing circuit consisting of CPU11, address buffer 12, address buses 13 and 16, address decoder 14, program memory 15, data buffer 17, memory 18 possible for read/write, clock generator 20, and display data buffer 24, and the dispaly device 25, a display device 19 is inserted via the decorder 26 added, and the state where CPU11 is in operation and buses 13, 16 are not used, is detected. That is, the signal at the terminal 35 of CPU11 is detected at the inverter 36 in the device 19 to detect the vacancy of the bus with the latch instruction forming circuit 37. Thus, even if the CPU is in operation and vacant bus is present, the instruction is fed to the dispaly device 25 via the buffer 24 from the circuit 37 for specified display.
COPYRIGHT: (C)1981,JPO&Japio
JP17267079A 1979-12-31 1979-12-31 Data processor with display device Pending JPS5697128A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17267079A JPS5697128A (en) 1979-12-31 1979-12-31 Data processor with display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17267079A JPS5697128A (en) 1979-12-31 1979-12-31 Data processor with display device

Publications (1)

Publication Number Publication Date
JPS5697128A true JPS5697128A (en) 1981-08-05

Family

ID=15946187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17267079A Pending JPS5697128A (en) 1979-12-31 1979-12-31 Data processor with display device

Country Status (1)

Country Link
JP (1) JPS5697128A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157740A (en) * 1983-02-25 1984-09-07 Nec Home Electronics Ltd Data transfer method of microcomputer system
US5001941A (en) * 1989-04-24 1991-03-26 Kanzaki Kokyukoki Mfg. Co., Ltd. Transmission assembly for tractors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59157740A (en) * 1983-02-25 1984-09-07 Nec Home Electronics Ltd Data transfer method of microcomputer system
US5001941A (en) * 1989-04-24 1991-03-26 Kanzaki Kokyukoki Mfg. Co., Ltd. Transmission assembly for tractors

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