JPS57161934A - Microprogram controlling system - Google Patents
Microprogram controlling systemInfo
- Publication number
- JPS57161934A JPS57161934A JP4692881A JP4692881A JPS57161934A JP S57161934 A JPS57161934 A JP S57161934A JP 4692881 A JP4692881 A JP 4692881A JP 4692881 A JP4692881 A JP 4692881A JP S57161934 A JPS57161934 A JP S57161934A
- Authority
- JP
- Japan
- Prior art keywords
- interruption
- mpc
- processed
- rest part
- program
- 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
- G06F9/4831—Task transfer initiation or dispatching by interrupt, e.g. masked with variable priority
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 reduce the load of a program, by providing a program interrupting means, a start address modifying means, a mask means, and an interrupt factor flag to change optionally the priority level of an interrupt level by the program itself. CONSTITUTION:When vector information of an external interruption A is written in a register 14 and IVM and IM of registers 16 and 18 are not masked, a priority level determining circuit 10 sets an interrupt flag IF. When an interruption B comes during the execution of the interruption A, contents of an MPC are saved to an MPC'' to execute the interruption B. Here, when an interruption C is generated and the processing time for it is long, a microprogram lowers the level of the interruption C and executes interruptions B and A. Information of the interruption B is transferred to the MPC'' from the MPC, and a rest part B' is processed; and when this processing is completed, a rest part A' is processed. After interruption B and A are processed, a rest part C' is accepted as an internal interruption and is processed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4692881A JPS57161934A (en) | 1981-03-30 | 1981-03-30 | Microprogram controlling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4692881A JPS57161934A (en) | 1981-03-30 | 1981-03-30 | Microprogram controlling system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57161934A true JPS57161934A (en) | 1982-10-05 |
JPH0115094B2 JPH0115094B2 (en) | 1989-03-15 |
Family
ID=12760988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4692881A Granted JPS57161934A (en) | 1981-03-30 | 1981-03-30 | Microprogram controlling system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57161934A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59103150A (en) * | 1982-12-06 | 1984-06-14 | Hitachi Ltd | Microprogram control system |
JPS61166631A (en) * | 1985-01-18 | 1986-07-28 | Oki Electric Ind Co Ltd | Microprogram control processor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5063856A (en) * | 1973-10-08 | 1975-05-30 | ||
JPS5189362A (en) * | 1975-02-03 | 1976-08-05 | ||
JPS5559555A (en) * | 1978-10-27 | 1980-05-06 | Nec Corp | High-speed level switching device |
JPS5576448A (en) * | 1978-12-05 | 1980-06-09 | Nippon Telegr & Teleph Corp <Ntt> | Multi-group register control system |
-
1981
- 1981-03-30 JP JP4692881A patent/JPS57161934A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5063856A (en) * | 1973-10-08 | 1975-05-30 | ||
JPS5189362A (en) * | 1975-02-03 | 1976-08-05 | ||
JPS5559555A (en) * | 1978-10-27 | 1980-05-06 | Nec Corp | High-speed level switching device |
JPS5576448A (en) * | 1978-12-05 | 1980-06-09 | Nippon Telegr & Teleph Corp <Ntt> | Multi-group register control system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59103150A (en) * | 1982-12-06 | 1984-06-14 | Hitachi Ltd | Microprogram control system |
JPS61166631A (en) * | 1985-01-18 | 1986-07-28 | Oki Electric Ind Co Ltd | Microprogram control processor |
JPH0462093B2 (en) * | 1985-01-18 | 1992-10-05 | Oki Electric Ind Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPH0115094B2 (en) | 1989-03-15 |
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