JPS576955A - Information processor - Google Patents
Information processorInfo
- Publication number
- JPS576955A JPS576955A JP8019580A JP8019580A JPS576955A JP S576955 A JPS576955 A JP S576955A JP 8019580 A JP8019580 A JP 8019580A JP 8019580 A JP8019580 A JP 8019580A JP S576955 A JPS576955 A JP S576955A
- Authority
- JP
- Japan
- Prior art keywords
- processor
- priority
- instruction
- selecting circuit
- result
- 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
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/14—Handling requests for interconnection or transfer
- G06F13/16—Handling requests for interconnection or transfer for access to memory bus
- G06F13/18—Handling requests for interconnection or transfer for access to memory bus based on priority control
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Multi Processors (AREA)
Abstract
PURPOSE:To prevent a fault of a priority selecting circuit and avoid the deterioraration of process efficiency of a multiprocessor system, by reading the priority selection result signal out of a common memory by an instruction given from a processor. CONSTITUTION:A processor 1-1 executes the priority selection result reading instruction, and at the same time a processor 1-n delivers an access request. Under such conditios, if a priority selecting circuit 5 selects a processor 1-1, this result is set to flip-flops 6-1-5-n and then led to interfaces 4-1-4-n to accept an instruction of the processor 1-1. As a result, a selecting circuit 9 delivers the data of the flip- flops 6-1-6-n to the processor 1-1 in place of the data of a memory 3 by an instruction of a working designating circuit 8. Thus a processor can read the priority selection result, and accordingly whether or not the priority selecting circuit performs a correct selection of priority based on the sequence of priority can be inspected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8019580A JPS576955A (en) | 1980-06-16 | 1980-06-16 | Information processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8019580A JPS576955A (en) | 1980-06-16 | 1980-06-16 | Information processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS576955A true JPS576955A (en) | 1982-01-13 |
Family
ID=13711595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8019580A Pending JPS576955A (en) | 1980-06-16 | 1980-06-16 | Information processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS576955A (en) |
-
1980
- 1980-06-16 JP JP8019580A patent/JPS576955A/en active Pending
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