JPS5650441A - Data processing system - Google Patents
Data processing systemInfo
- Publication number
- JPS5650441A JPS5650441A JP12540679A JP12540679A JPS5650441A JP S5650441 A JPS5650441 A JP S5650441A JP 12540679 A JP12540679 A JP 12540679A JP 12540679 A JP12540679 A JP 12540679A JP S5650441 A JPS5650441 A JP S5650441A
- Authority
- JP
- Japan
- Prior art keywords
- program
- address
- space
- extended
- instructions
- 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
Abstract
PURPOSE: To read out instruction words in the extended space by a program counter of no capacity, by causing the processor itself to store instruction words of an instruction group other than the normal instruction group in the extended address and to address instruction words by the address smaller than the extended address.
CONSTITUTION: Locations 0W64kW of the memory are used as basic address space 28, and locations 64W128kW are used as extended address space 29, and control program 30, decoding program 31, and a part of the beginning of object program 32 are stored in space 28. Program 32 is stored in space 29, and this program 32 is described with OI instructions 33 other than instructions of the data processor. These instructions 33 are decoded by decoding program 31 to make it possible that the processor itself executes them, and instruction words are addressed by the address smaller than the extended address and can be read out by the program counter.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12540679A JPS5650441A (en) | 1979-10-01 | 1979-10-01 | Data processing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12540679A JPS5650441A (en) | 1979-10-01 | 1979-10-01 | Data processing system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5650441A true JPS5650441A (en) | 1981-05-07 |
Family
ID=14909319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12540679A Pending JPS5650441A (en) | 1979-10-01 | 1979-10-01 | Data processing system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5650441A (en) |
-
1979
- 1979-10-01 JP JP12540679A patent/JPS5650441A/en active Pending
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