JPS5755453A - Timer device - Google Patents
Timer deviceInfo
- 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
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.
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)
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 |
-
1980
- 1980-09-19 JP JP55130440A patent/JPS5755453A/en active Granted
Cited By (3)
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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