JPS5685159A - Program memory of microprocessor - Google Patents
Program memory of microprocessorInfo
- Publication number
- JPS5685159A JPS5685159A JP16208179A JP16208179A JPS5685159A JP S5685159 A JPS5685159 A JP S5685159A JP 16208179 A JP16208179 A JP 16208179A JP 16208179 A JP16208179 A JP 16208179A JP S5685159 A JPS5685159 A JP S5685159A
- Authority
- JP
- Japan
- Prior art keywords
- word
- bit
- written
- program memory
- length
- 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
Landscapes
- Executing Machine-Instructions (AREA)
- Microcomputers (AREA)
Abstract
PURPOSE: To enhance the using efficiency of a program memory, by setting the length of one word of the program memory to the parallel process enabling bit length of the arithmetic process part or its integer-fold bit length plus a small number of additional bits.
CONSTITUTION: The length of a word of the program memory formed on the same chip as the arithmetic process part is set to the parallel process enabling bit length of the arithmetic part or its integer-fold bit length plus a small number of additional bits. Then the operation code or the like to the information to be written into the residual bit memory region of the word is written into the memory region of the additional bit. For example, the program memory of the W words is used comprising the operation code of 8 bits or its integer-fold word length plus the memory region 10 of the instant value data. Then 0 and 1 are written into the additional bit of the word with the operation code written and the additional bit of the word the instant value data written respectively.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16208179A JPS5685159A (en) | 1979-12-13 | 1979-12-13 | Program memory of microprocessor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16208179A JPS5685159A (en) | 1979-12-13 | 1979-12-13 | Program memory of microprocessor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5685159A true JPS5685159A (en) | 1981-07-11 |
JPS6313214B2 JPS6313214B2 (en) | 1988-03-24 |
Family
ID=15747716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16208179A Granted JPS5685159A (en) | 1979-12-13 | 1979-12-13 | Program memory of microprocessor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5685159A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007088819A1 (en) * | 2006-02-03 | 2007-08-09 | Matsushita Electric Industrial Co., Ltd. | Processor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5259537A (en) * | 1975-11-11 | 1977-05-17 | Mitsubishi Electric Corp | Data processor |
-
1979
- 1979-12-13 JP JP16208179A patent/JPS5685159A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5259537A (en) * | 1975-11-11 | 1977-05-17 | Mitsubishi Electric Corp | Data processor |
Also Published As
Publication number | Publication date |
---|---|
JPS6313214B2 (en) | 1988-03-24 |
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