JPS54113226A - Data processing unit - Google Patents
Data processing unitInfo
- Publication number
- JPS54113226A JPS54113226A JP14177777A JP14177777A JPS54113226A JP S54113226 A JPS54113226 A JP S54113226A JP 14177777 A JP14177777 A JP 14177777A JP 14177777 A JP14177777 A JP 14177777A JP S54113226 A JPS54113226 A JP S54113226A
- Authority
- JP
- Japan
- Prior art keywords
- word
- instruction
- data
- fetched
- instruction word
- 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
- Advance Control (AREA)
Abstract
PURPOSE: To improve the buffering efficiency on the data processing unit by control ling the data processing unit to use a part of an instruction buffer as a data buffer when specific instructions are executed.
CONSTITUTION: In the data processing unit where the precedence control is performed, main memory means 10 which stores the data word and the instruction word and buffer means 30 which stores the instruction word and data word fetched precedently are provided. Further, look ahead control means 40 which controls whether only the instruction word or both the instruction word and the data word are fetched prcedently from means 10 to means 30 or not according to contents of the instruction word is provided. Furthermore, execution means 50 which reads the instruction word and the data word which are fetched precedently into means 30 and performs a specified operation is provided. By this constitution, according to the contents of the instruction fetched precedently, the instruction word or the instruction word and the data word are controlled to be fetched into means 30 from means 10. As a result, it is possible to improve the usage efficiency of the buffer.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14177777A JPS54113226A (en) | 1977-11-26 | 1977-11-26 | Data processing unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14177777A JPS54113226A (en) | 1977-11-26 | 1977-11-26 | Data processing unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54113226A true JPS54113226A (en) | 1979-09-04 |
Family
ID=15299917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14177777A Pending JPS54113226A (en) | 1977-11-26 | 1977-11-26 | Data processing unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54113226A (en) |
-
1977
- 1977-11-26 JP JP14177777A patent/JPS54113226A/en active Pending
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