JPS56166568A - Information processor - Google Patents

Information processor

Info

Publication number
JPS56166568A
JPS56166568A JP7028980A JP7028980A JPS56166568A JP S56166568 A JPS56166568 A JP S56166568A JP 7028980 A JP7028980 A JP 7028980A JP 7028980 A JP7028980 A JP 7028980A JP S56166568 A JPS56166568 A JP S56166568A
Authority
JP
Japan
Prior art keywords
bus
memory
bit
processor
common
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.)
Granted
Application number
JP7028980A
Other languages
Japanese (ja)
Other versions
JPH0227696B2 (en
Inventor
Yoshikuni Satou
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP7028980A priority Critical patent/JPH0227696B2/en
Publication of JPS56166568A publication Critical patent/JPS56166568A/en
Publication of JPH0227696B2 publication Critical patent/JPH0227696B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G06F15/163—Interprocessor communication
    • G06F15/167—Interprocessor communication using a common memory, e.g. mailbox

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multi Processors (AREA)
  • Bus Control (AREA)

Abstract

PURPOSE:To increase the data transfer speed and to reduce the processing time, by constituting that a common memory can be connected to any of m,n bit-bus, and separating the memory from the bus while the processor do not execute data transfer with the memory. CONSTITUTION:On a 16 bit-bus 230 and a 8 bit-bus 240, common memories 250, 260 which can use processors 210,220 commonly are provided so that they can be connected to both the buses. When a 16 bit-processor 210 uses the common memory 250 through utilizing the bus 230, and when a 8 bit-processor 220 accesses the common memory 260 through utilizing the bus 240, the processing of respective processor can be executed in parallel at the same time without any delay in the access by connecting the memory 250 to the bus 230 and the memory 260 to the bus 240.
JP7028980A 1980-05-27 1980-05-27 JOHOSHORISOCHI Expired - Lifetime JPH0227696B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7028980A JPH0227696B2 (en) 1980-05-27 1980-05-27 JOHOSHORISOCHI

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7028980A JPH0227696B2 (en) 1980-05-27 1980-05-27 JOHOSHORISOCHI

Publications (2)

Publication Number Publication Date
JPS56166568A true JPS56166568A (en) 1981-12-21
JPH0227696B2 JPH0227696B2 (en) 1990-06-19

Family

ID=13427165

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7028980A Expired - Lifetime JPH0227696B2 (en) 1980-05-27 1980-05-27 JOHOSHORISOCHI

Country Status (1)

Country Link
JP (1) JPH0227696B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57113164A (en) * 1980-12-31 1982-07-14 Fujitsu Ltd Information processor
JPS58225460A (en) * 1982-06-25 1983-12-27 Fujitsu Kiden Ltd Access system to memory
JPS60110065A (en) * 1983-11-21 1985-06-15 Mitsubishi Electric Corp Dual port memory
JPS60160425A (en) * 1984-02-01 1985-08-22 Hitachi Ltd Connecting circuit
JPS61217859A (en) * 1985-03-25 1986-09-27 Fujitsu Ltd Data transfer system
JPS62174859A (en) * 1986-01-28 1987-07-31 Nec Corp Data multiplex transferring device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57113164A (en) * 1980-12-31 1982-07-14 Fujitsu Ltd Information processor
JPS58225460A (en) * 1982-06-25 1983-12-27 Fujitsu Kiden Ltd Access system to memory
JPS60110065A (en) * 1983-11-21 1985-06-15 Mitsubishi Electric Corp Dual port memory
JPS60160425A (en) * 1984-02-01 1985-08-22 Hitachi Ltd Connecting circuit
JPH0316649B2 (en) * 1984-02-01 1991-03-06 Hitachi Ltd
JPS61217859A (en) * 1985-03-25 1986-09-27 Fujitsu Ltd Data transfer system
JPS62174859A (en) * 1986-01-28 1987-07-31 Nec Corp Data multiplex transferring device

Also Published As

Publication number Publication date
JPH0227696B2 (en) 1990-06-19

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