JPS5769456A - Microprogram controller - Google Patents

Microprogram controller

Info

Publication number
JPS5769456A
JPS5769456A JP14428480A JP14428480A JPS5769456A JP S5769456 A JPS5769456 A JP S5769456A JP 14428480 A JP14428480 A JP 14428480A JP 14428480 A JP14428480 A JP 14428480A JP S5769456 A JPS5769456 A JP S5769456A
Authority
JP
Japan
Prior art keywords
latch
contents
request
branch
condition
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
JP14428480A
Other languages
Japanese (ja)
Other versions
JPS6136659B2 (en
Inventor
Shigemi Uemoto
Koichi Ueda
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14428480A priority Critical patent/JPS5769456A/en
Publication of JPS5769456A publication Critical patent/JPS5769456A/en
Publication of JPS6136659B2 publication Critical patent/JPS6136659B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/22—Microcontrol or microprogram arrangements
    • G06F9/26—Address formation of the next micro-instruction ; Microprogram storage or retrieval arrangements
    • G06F9/262—Arrangements for next microinstruction selection
    • G06F9/264—Microinstruction selection based on results of processing

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To recognize the contents of a latch from a program controller optionally without varying the contents and to utilize the contents as a branch condition at the same time, by using a scanning circuit for a latch group, determining the condition of the branch of microinstructions using an external processor and the program controller in common. CONSTITUTION:A latch group 6(6') determining the condition of the branch of microinstructions is provided, and the latch group is provided with a scanning circuit which is scanned out from an external processor, such as a service processor SVP. An address selecting circuit 7 discriminating between a readout request for a latch from the address of a control storage 1 and that from the address of the external processor selects a specific latch. Its contents are sent to a coresponding request origin through a gate 13 for the request of the controller or a gate 12 for the request of the external device.
JP14428480A 1980-10-17 1980-10-17 Microprogram controller Granted JPS5769456A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14428480A JPS5769456A (en) 1980-10-17 1980-10-17 Microprogram controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14428480A JPS5769456A (en) 1980-10-17 1980-10-17 Microprogram controller

Publications (2)

Publication Number Publication Date
JPS5769456A true JPS5769456A (en) 1982-04-28
JPS6136659B2 JPS6136659B2 (en) 1986-08-19

Family

ID=15358491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14428480A Granted JPS5769456A (en) 1980-10-17 1980-10-17 Microprogram controller

Country Status (1)

Country Link
JP (1) JPS5769456A (en)

Also Published As

Publication number Publication date
JPS6136659B2 (en) 1986-08-19

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