JPS567148A - Data processor - Google Patents
Data processorInfo
- Publication number
- JPS567148A JPS567148A JP8225979A JP8225979A JPS567148A JP S567148 A JPS567148 A JP S567148A JP 8225979 A JP8225979 A JP 8225979A JP 8225979 A JP8225979 A JP 8225979A JP S567148 A JPS567148 A JP S567148A
- Authority
- JP
- Japan
- Prior art keywords
- order
- address
- memory
- program
- register
- 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
- Executing Machine-Instructions (AREA)
Abstract
PURPOSE: To secure the use of part of the main program for the subroutine, by executing the order of the order memory means instead of the main program order when the program counter shows the order address of the order address memory means.
CONSTITUTION: The process of the program jumps to B from E-F and proceed to the processes at and after B. Then the order immediately before C is executed, and program counter 7 shows the address (1000) of order C as the memory address of the order to be executed next. Thus the coincidence is detected 9 for the contents between counter 7 and order address memory register 8 (storing address 1000 of order C), and selection circuit 4 selects the output of order memory register 3 by the coincidence output 13 and then reads it to order register 5. In such way, part B-C of the main program can be used for the subroutine without rewriting order C in memory 1.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8225979A JPS567148A (en) | 1979-06-29 | 1979-06-29 | Data processor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8225979A JPS567148A (en) | 1979-06-29 | 1979-06-29 | Data processor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS567148A true JPS567148A (en) | 1981-01-24 |
Family
ID=13769450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8225979A Pending JPS567148A (en) | 1979-06-29 | 1979-06-29 | Data processor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS567148A (en) |
-
1979
- 1979-06-29 JP JP8225979A patent/JPS567148A/en active Pending
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