JPS55146545A - Memory multiplexing system of microcomputer - Google Patents
Memory multiplexing system of microcomputerInfo
- Publication number
- JPS55146545A JPS55146545A JP5417179A JP5417179A JPS55146545A JP S55146545 A JPS55146545 A JP S55146545A JP 5417179 A JP5417179 A JP 5417179A JP 5417179 A JP5417179 A JP 5417179A JP S55146545 A JPS55146545 A JP S55146545A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- microcomputer
- programs
- same
- multiplexing system
- 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
- Microcomputers (AREA)
Abstract
PURPOSE: To obtain a memory multiplexing system of a microcomputer by which numbers of different processings can be executed, by automatically or manually selecting and using several ROMs having programs which begin with the same address.
CONSTITUTION: Memories 3W5 have programs whose execution start addresses are all the same and whose contents of processing are different. A microcomputer executes the same operation and generates different results depending upon the contents of the memory, even if any memory of the foregoing is connected. Now, in case an automatic interruption which selects the memory 3 is generated from the main computer 9, the microcomputer 1 gives a memory 3 connection command to a memory circuit 10, by which it is connected to the memory 3, and the operation is started. A manual interruption is carried out by depressing changeover switches 6W8 of an operator's console 2. In case a system is extended, it is attained by only adding a memory in which programs are written and a memory for connection.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5417179A JPS55146545A (en) | 1979-05-04 | 1979-05-04 | Memory multiplexing system of microcomputer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5417179A JPS55146545A (en) | 1979-05-04 | 1979-05-04 | Memory multiplexing system of microcomputer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55146545A true JPS55146545A (en) | 1980-11-14 |
Family
ID=12963087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5417179A Pending JPS55146545A (en) | 1979-05-04 | 1979-05-04 | Memory multiplexing system of microcomputer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55146545A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5839343A (en) * | 1981-08-31 | 1983-03-08 | Nec Home Electronics Ltd | Initial starting device for plural systems |
JPS5839344A (en) * | 1981-08-31 | 1983-03-08 | Nec Home Electronics Ltd | Initial starting device for plural systems |
JPS60166050U (en) * | 1984-04-11 | 1985-11-05 | 里 敏彰 | Program-switchable memory circuit |
JPS63314601A (en) * | 1987-06-17 | 1988-12-22 | Mitsubishi Electric Corp | Interruption controller for computer |
-
1979
- 1979-05-04 JP JP5417179A patent/JPS55146545A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5839343A (en) * | 1981-08-31 | 1983-03-08 | Nec Home Electronics Ltd | Initial starting device for plural systems |
JPS5839344A (en) * | 1981-08-31 | 1983-03-08 | Nec Home Electronics Ltd | Initial starting device for plural systems |
JPS60166050U (en) * | 1984-04-11 | 1985-11-05 | 里 敏彰 | Program-switchable memory circuit |
JPS63314601A (en) * | 1987-06-17 | 1988-12-22 | Mitsubishi Electric Corp | Interruption controller for computer |
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