JPS5755453A - Timer device - Google Patents

Timer device

Info

Publication number
JPS5755453A
JPS5755453A JP55130440A JP13044080A JPS5755453A JP S5755453 A JPS5755453 A JP S5755453A JP 55130440 A JP55130440 A JP 55130440A JP 13044080 A JP13044080 A JP 13044080A JP S5755453 A JPS5755453 A JP S5755453A
Authority
JP
Japan
Prior art keywords
timer
circuit
interruption
interval
coincidence
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
JP55130440A
Other languages
Japanese (ja)
Other versions
JPS6148178B2 (en
Inventor
Kiyoshi Shimura
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 JP55130440A priority Critical patent/JPS5755453A/en
Publication of JPS5755453A publication Critical patent/JPS5755453A/en
Publication of JPS6148178B2 publication Critical patent/JPS6148178B2/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
    • G06F9/46—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
    • G06F9/4825—Interrupt from clock, e.g. time of day

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 the timer interruption request from leaving waiting for a long time unexpectedly, by increasing the interruption level according to the coincidence circuit of an interval timer, in a timer device for timer interruption. CONSTITUTION:A timer interruption interval is set to a preset register 200 from a program and a comparison circuit 300 compares this with the output 120 of an interval timer 100. When coincidence is detected, the interval timer 100 is set to ''0'' and a roll-over counter 500 is counted up via an AND circuit 400. The counter 500 integrates the number of times of coincided detection at the circuit 300, until any instruction from a clear indication signal 410 is given. If this integrated value is not ''0'', a timer interruption signal is outputted from an OR circuit 600 and the priority of interruption is increased according to the integration value 520.
JP55130440A 1980-09-19 1980-09-19 Timer device Granted JPS5755453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55130440A JPS5755453A (en) 1980-09-19 1980-09-19 Timer device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55130440A JPS5755453A (en) 1980-09-19 1980-09-19 Timer device

Publications (2)

Publication Number Publication Date
JPS5755453A true JPS5755453A (en) 1982-04-02
JPS6148178B2 JPS6148178B2 (en) 1986-10-23

Family

ID=15034287

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55130440A Granted JPS5755453A (en) 1980-09-19 1980-09-19 Timer device

Country Status (1)

Country Link
JP (1) JPS5755453A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63171843U (en) * 1987-04-30 1988-11-08
JPH02103613A (en) * 1988-10-12 1990-04-16 Rohm Co Ltd Microcomputer
JPH039432A (en) * 1989-06-07 1991-01-17 Ricoh Co Ltd Real time processing system for digital signal processing processor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63171843U (en) * 1987-04-30 1988-11-08
JPH02103613A (en) * 1988-10-12 1990-04-16 Rohm Co Ltd Microcomputer
JPH039432A (en) * 1989-06-07 1991-01-17 Ricoh Co Ltd Real time processing system for digital signal processing processor

Also Published As

Publication number Publication date
JPS6148178B2 (en) 1986-10-23

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