JPS5642867A - Data exchange system for microcomputer system - Google Patents

Data exchange system for microcomputer system

Info

Publication number
JPS5642867A
JPS5642867A JP11799279A JP11799279A JPS5642867A JP S5642867 A JPS5642867 A JP S5642867A JP 11799279 A JP11799279 A JP 11799279A JP 11799279 A JP11799279 A JP 11799279A JP S5642867 A JPS5642867 A JP S5642867A
Authority
JP
Japan
Prior art keywords
data exchange
bus
common memory
memory
ram
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
JP11799279A
Other languages
Japanese (ja)
Inventor
Tetsutada Shiga
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP11799279A priority Critical patent/JPS5642867A/en
Publication of JPS5642867A publication Critical patent/JPS5642867A/en
Pending legal-status Critical Current

Links

Landscapes

  • Information Transfer Systems (AREA)
  • Multi Processors (AREA)

Abstract

PURPOSE: To carry out the data exchange under a simple control between the CPUs in the multiprocessor system, by providing the common memory bus line switching unit.
CONSTITUTION: When the common memory bus switching unit SW is connected to the side of (a), the RAM-G functioning as the common memory functions as the memory of the central processor unit CPU-A via the exclusive bus PB-A. And in case the unit SW is connected to the side of (b), the RAM-G functions as the memory of the central processor unit CPU-B via the exclusive bus PB-B respectively. In such way, the common memory is connected by switching to the exclusive bus of either one of the processor units, thus ensuring a data exchange with a simple control.
COPYRIGHT: (C)1981,JPO&Japio
JP11799279A 1979-09-17 1979-09-17 Data exchange system for microcomputer system Pending JPS5642867A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11799279A JPS5642867A (en) 1979-09-17 1979-09-17 Data exchange system for microcomputer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11799279A JPS5642867A (en) 1979-09-17 1979-09-17 Data exchange system for microcomputer system

Publications (1)

Publication Number Publication Date
JPS5642867A true JPS5642867A (en) 1981-04-21

Family

ID=14725340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11799279A Pending JPS5642867A (en) 1979-09-17 1979-09-17 Data exchange system for microcomputer system

Country Status (1)

Country Link
JP (1) JPS5642867A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957377U (en) * 1982-10-08 1984-04-14 積水化学工業株式会社 rain gutter packing structure
JPS62163185A (en) * 1986-01-14 1987-07-18 Matsushita Electric Ind Co Ltd Character recognizing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957377U (en) * 1982-10-08 1984-04-14 積水化学工業株式会社 rain gutter packing structure
JPS62163185A (en) * 1986-01-14 1987-07-18 Matsushita Electric Ind Co Ltd Character recognizing device

Similar Documents

Publication Publication Date Title
EP0123509A3 (en) Computer vector multiprocessing control
JPS5547546A (en) Microcomputer circuit
JPS5680722A (en) Interprocessor control system
JPS5642867A (en) Data exchange system for microcomputer system
JPS5750037A (en) Data transfer system
JPS5622160A (en) Data processing system having additional processor
JPS5398741A (en) High level recording and processing system
JPS55108027A (en) Processor system
JPS539434A (en) Data processor system
JPS5563422A (en) Data transfer system
JPS55116156A (en) Multiple access unit for external memory unit
JPS54159839A (en) Back-up system of cpu unit
JPS55150032A (en) Data transfer system
JPS5759220A (en) Data transfer system
JPS5545006A (en) Multiprocessor control system of copying machine
JPS55119749A (en) Retry control system
JPS559225A (en) Check method of double bus
JPS52120732A (en) Microcomputer
JPS5599633A (en) Data transfer control system
JPS56108159A (en) Access control system
JPS55153021A (en) Data transfer system of multiprocessor system
JPS5661882A (en) Decentralized control system
JPS5361236A (en) Memory access control system
JPS5363932A (en) Direct memory access control system
JPS559215A (en) Information processing system