JPS5797149A - Interruption processing circuit - Google Patents

Interruption processing circuit

Info

Publication number
JPS5797149A
JPS5797149A JP17340680A JP17340680A JPS5797149A JP S5797149 A JPS5797149 A JP S5797149A JP 17340680 A JP17340680 A JP 17340680A JP 17340680 A JP17340680 A JP 17340680A JP S5797149 A JPS5797149 A JP S5797149A
Authority
JP
Japan
Prior art keywords
program
interruption
program counter
interruption processing
circuit
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
JP17340680A
Other languages
Japanese (ja)
Inventor
Kenshirou Arase
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha 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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP17340680A priority Critical patent/JPS5797149A/en
Publication of JPS5797149A publication Critical patent/JPS5797149A/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 write a data of a start address of an interruption processing program in a program counter, by only adding a priority setting circuit to an initial resetting circuit of the program counter. CONSTITUTION:In an interruption processing circuit of a microprocessor, in case a start address of an internal or external interruption processing program is decided in advance, a priority setting circuit is provided in an initial resetting circuit of a program counter 2. The program counter 2 is formed by arraying an F/F in parallel in 12 stages, and when the program is initialized and is started from an address ''0'', a reset signal 4 is made an active state. In case of the internal interruption and the external interruption, a set signal 5 and 6 are made an active state, respectively. In this way, when the reset signal 4 and said set signal 5 or 6 become an active state simultaneously, said set signal takes a priority, and contents of the program counter 2 become contents of a start address of each interruption program.
JP17340680A 1980-12-09 1980-12-09 Interruption processing circuit Pending JPS5797149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17340680A JPS5797149A (en) 1980-12-09 1980-12-09 Interruption processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17340680A JPS5797149A (en) 1980-12-09 1980-12-09 Interruption processing circuit

Publications (1)

Publication Number Publication Date
JPS5797149A true JPS5797149A (en) 1982-06-16

Family

ID=15959829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17340680A Pending JPS5797149A (en) 1980-12-09 1980-12-09 Interruption processing circuit

Country Status (1)

Country Link
JP (1) JPS5797149A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039432A (en) * 1989-06-07 1991-01-17 Ricoh Co Ltd Real time processing system for digital signal processing processor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54152939A (en) * 1978-05-24 1979-12-01 Fujitsu Ltd Microprogram interruption control system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54152939A (en) * 1978-05-24 1979-12-01 Fujitsu Ltd Microprogram interruption control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH039432A (en) * 1989-06-07 1991-01-17 Ricoh Co Ltd Real time processing system for digital signal processing processor

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