JPS5510659A - Data processor - Google Patents
Data processorInfo
- Publication number
- JPS5510659A JPS5510659A JP8320778A JP8320778A JPS5510659A JP S5510659 A JPS5510659 A JP S5510659A JP 8320778 A JP8320778 A JP 8320778A JP 8320778 A JP8320778 A JP 8320778A JP S5510659 A JPS5510659 A JP S5510659A
- Authority
- JP
- Japan
- Prior art keywords
- instruction
- content
- execution
- decided whether
- specific condition
- 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
Landscapes
- Devices For Executing Special Programs (AREA)
- Control By Computers (AREA)
Abstract
PURPOSE: To shorten the mean execution time for instrucons by disabling one instruction or following instructions for execution under a specific condition.
CONSTITUTION: An instruction is read out from the memory unit to the instruction register and it is decided whether the content of counter 32 is "0" or not, namely, whether there are parenthesises; in case of the AND instruction, it is decided whether or not the content of bit accumulator 30 is "0" and in case of the OR instruction, it is decided whether or not the content of bit accumulator 30 is "1". Then, when this specific condition fails, address calculation operation fetch and instruction execution are carried out and when coming into existence, operations from the address calculation to instruction execution are omitted.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8320778A JPS5510659A (en) | 1978-07-08 | 1978-07-08 | Data processor |
US06/054,577 US4298933A (en) | 1978-07-08 | 1979-07-03 | Data-processing device including means to suppress the execution of unnecessary instructions |
AU48723/79A AU528284B2 (en) | 1978-07-08 | 1979-07-06 | Shortening execution time of data processor |
DE2927481A DE2927481C2 (en) | 1978-07-08 | 1979-07-06 | Data processing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8320778A JPS5510659A (en) | 1978-07-08 | 1978-07-08 | Data processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5510659A true JPS5510659A (en) | 1980-01-25 |
Family
ID=13795870
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8320778A Pending JPS5510659A (en) | 1978-07-08 | 1978-07-08 | Data processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5510659A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58166443A (en) * | 1982-03-27 | 1983-10-01 | Fujitsu Ltd | Logical arithmetic control system |
-
1978
- 1978-07-08 JP JP8320778A patent/JPS5510659A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58166443A (en) * | 1982-03-27 | 1983-10-01 | Fujitsu Ltd | Logical arithmetic control system |
JPH0117175B2 (en) * | 1982-03-27 | 1989-03-29 | Fujitsu Ltd |
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