JPS57191756A - Program switching controlling circuit - Google Patents

Program switching controlling circuit

Info

Publication number
JPS57191756A
JPS57191756A JP7743081A JP7743081A JPS57191756A JP S57191756 A JPS57191756 A JP S57191756A JP 7743081 A JP7743081 A JP 7743081A JP 7743081 A JP7743081 A JP 7743081A JP S57191756 A JPS57191756 A JP S57191756A
Authority
JP
Japan
Prior art keywords
program switching
program
controlling circuit
switching controlling
instruction
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
JP7743081A
Other languages
Japanese (ja)
Inventor
Hiroshi Fukuda
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7743081A priority Critical patent/JPS57191756A/en
Publication of JPS57191756A publication Critical patent/JPS57191756A/en
Pending 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
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4812—Task transfer initiation or dispatching by interrupt, e.g. masked

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 prevent troubles such as the occurrence of an error in the number of interrupts and the failure of th execution of prescribed input and output, by adding a program switching inhibiting register to a program switching controlling circuit for multiprocessing. CONSTITUTION:When a program switching inhibiting register 12 is turned on, the program switching is inhibited by a program switching controlling circuit 9, and interrupted PA and PS of level 3 are returned from interrupted PA and PS registers 5 and 6 to PA and PS registers 3 and 4, and programs of level 3 are continued. When a program issues a program switching inhibiting instruction in the course of the execution of the program, this instruction is decoded by an instruction decoding circuit 13, and the program switching inhibiting register 12 is turned off.
JP7743081A 1981-05-21 1981-05-21 Program switching controlling circuit Pending JPS57191756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7743081A JPS57191756A (en) 1981-05-21 1981-05-21 Program switching controlling circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7743081A JPS57191756A (en) 1981-05-21 1981-05-21 Program switching controlling circuit

Publications (1)

Publication Number Publication Date
JPS57191756A true JPS57191756A (en) 1982-11-25

Family

ID=13633774

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7743081A Pending JPS57191756A (en) 1981-05-21 1981-05-21 Program switching controlling circuit

Country Status (1)

Country Link
JP (1) JPS57191756A (en)

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