JPS6410370A - Bus request circuit - Google Patents

Bus request circuit

Info

Publication number
JPS6410370A
JPS6410370A JP16525987A JP16525987A JPS6410370A JP S6410370 A JPS6410370 A JP S6410370A JP 16525987 A JP16525987 A JP 16525987A JP 16525987 A JP16525987 A JP 16525987A JP S6410370 A JPS6410370 A JP S6410370A
Authority
JP
Japan
Prior art keywords
main storage
storage unit
bus
request
central processing
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
JP16525987A
Other languages
Japanese (ja)
Inventor
Hiroshi Sato
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
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 filed Critical NEC Corp
Priority to JP16525987A priority Critical patent/JPS6410370A/en
Publication of JPS6410370A publication Critical patent/JPS6410370A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/14—Handling requests for interconnection or transfer
    • G06F13/36—Handling requests for interconnection or transfer for access to common bus or bus system

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Bus Control (AREA)

Abstract

PURPOSE:To improve the effective utilization rate of a common bus by providing a main storage unit selection circuit outputting a selection signal selecting a main storage unit based on memory address information and interleave information of the main storage unit and a request encoder circuit outputting the selection signal outputted therefrom, a bus request signal giving a use request of a common bus and a data representing a main storage unit number to a bus control unit. CONSTITUTION:When a central processing unit 12 gives a use request of the common bus 10 to access any of main storage units, a central processing unit 12 references a status signal of each main storage unit fed onto exclusive buses 7, 8 and interleave information of N-set of main storage units 16, 18 fed to an exclusive bus 9. Then a bus request signal 24 giving a use request of the common bus 10 and a data 26 representing the main storage unit number specifying the main storage unit to be accessed are fed to a bus control section 30. The processing above is not limited to the central processing unit 12 but applied to other units.
JP16525987A 1987-07-03 1987-07-03 Bus request circuit Pending JPS6410370A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16525987A JPS6410370A (en) 1987-07-03 1987-07-03 Bus request circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16525987A JPS6410370A (en) 1987-07-03 1987-07-03 Bus request circuit

Publications (1)

Publication Number Publication Date
JPS6410370A true JPS6410370A (en) 1989-01-13

Family

ID=15808924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16525987A Pending JPS6410370A (en) 1987-07-03 1987-07-03 Bus request circuit

Country Status (1)

Country Link
JP (1) JPS6410370A (en)

Similar Documents

Publication Publication Date Title
CA2016348A1 (en) Multiprocessor type time varying image encoding system and image processor
JPS5580164A (en) Main memory constitution control system
KR890003688B1 (en) Buffer-storage control system
CA2067602A1 (en) Personal computer with anticipatory memory control signalling
EP0094042A3 (en) Data processing apparatus wherein a system bus is shared by two or more circuits
AU5297286A (en) Controlling access in multi-cache system
EP0217479A3 (en) Information processing unit
JPS6410370A (en) Bus request circuit
JPS5466727A (en) Access control system for buffer memory
JPS57117056A (en) Microcomputer device
JPS6410371A (en) Bus request circuit
ES2038928A2 (en) Access processing system in information processor
JPS6426250A (en) Memory readout circuit for cpu
JPS5552600A (en) Main memory unit
JPS54140841A (en) Memory control system of multiprocessor system
JPS5733472A (en) Memory access control system
JPS6419457A (en) Memory device
JPS5643896A (en) Key telephone control circuit
JPS5622157A (en) Process system multiplexing system
EP0376253A3 (en) Information processing apparatus with cache memory
JPS6491264A (en) Data transfer controller
JPS57113166A (en) Data processor
JPS57197661A (en) Multiplex controlling system for file memory
JPS6467652A (en) Cache memory eliminating data discordance
JPS5512533A (en) Control system for multiplex memory unit