JPS5634199A - Memory correction system - Google Patents
Memory correction systemInfo
- Publication number
- JPS5634199A JPS5634199A JP10895779A JP10895779A JPS5634199A JP S5634199 A JPS5634199 A JP S5634199A JP 10895779 A JP10895779 A JP 10895779A JP 10895779 A JP10895779 A JP 10895779A JP S5634199 A JPS5634199 A JP S5634199A
- Authority
- JP
- Japan
- Prior art keywords
- address
- patch
- unit
- circuit
- feeds
- 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 make easy the correction of content of ROM, by providing the patching unit.
CONSTITUTION: The address information of the main memory unit 5 is stored in the address register 1, the patch detection circuit 3 in the patching unit a receives the address information via the bus 101, and the patch information storage circuit 2 detects the presence of patch with the comparison with the patch address preset. If patch is present, the significance signal 301 is fed to the address conversion circuit 4, the circuit 4 obtains the address of PROM area of the unit 5 corresponding to the patch address and feeds it to the unit 5. Thus, the unit 5 fetches the program information corresponded from ROM or PROM and feeds it to the data register 6.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10895779A JPS5634199A (en) | 1979-08-27 | 1979-08-27 | Memory correction system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10895779A JPS5634199A (en) | 1979-08-27 | 1979-08-27 | Memory correction system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5634199A true JPS5634199A (en) | 1981-04-06 |
Family
ID=14497936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10895779A Pending JPS5634199A (en) | 1979-08-27 | 1979-08-27 | Memory correction system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5634199A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58130496A (en) * | 1982-01-28 | 1983-08-03 | Nippon Telegr & Teleph Corp <Ntt> | Solid state storage device |
JPS60112358A (en) * | 1983-11-22 | 1985-06-18 | Tamura Electric Works Ltd | Method for setting data of public telephone set |
JPS60112359A (en) * | 1983-11-22 | 1985-06-18 | Tamura Electric Works Ltd | Method for setting numerical data of public telephone set |
JPS6245798U (en) * | 1985-09-05 | 1987-03-19 | ||
JPH0323598A (en) * | 1989-06-21 | 1991-01-31 | Honda Motor Co Ltd | Rom device |
JPH06131171A (en) * | 1990-05-24 | 1994-05-13 | Schlumberger Ind Ltd | Mask programmable microprocessor |
US5357627A (en) * | 1989-03-28 | 1994-10-18 | Olympus Optical Co., Ltd. | Microcomputer having a program correction function |
-
1979
- 1979-08-27 JP JP10895779A patent/JPS5634199A/en active Pending
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58130496A (en) * | 1982-01-28 | 1983-08-03 | Nippon Telegr & Teleph Corp <Ntt> | Solid state storage device |
JPS60112358A (en) * | 1983-11-22 | 1985-06-18 | Tamura Electric Works Ltd | Method for setting data of public telephone set |
JPS60112359A (en) * | 1983-11-22 | 1985-06-18 | Tamura Electric Works Ltd | Method for setting numerical data of public telephone set |
JPH0122789B2 (en) * | 1983-11-22 | 1989-04-27 | Tamura Electric Works Ltd | |
JPH0125263B2 (en) * | 1983-11-22 | 1989-05-17 | Tamura Electric Works Ltd | |
JPS6245798U (en) * | 1985-09-05 | 1987-03-19 | ||
US5357627A (en) * | 1989-03-28 | 1994-10-18 | Olympus Optical Co., Ltd. | Microcomputer having a program correction function |
US5592613A (en) * | 1989-03-28 | 1997-01-07 | Olympus Optical Co., Ltd. | Microcomputer having a program correction function |
JPH0323598A (en) * | 1989-06-21 | 1991-01-31 | Honda Motor Co Ltd | Rom device |
JPH06131171A (en) * | 1990-05-24 | 1994-05-13 | Schlumberger Ind Ltd | Mask programmable microprocessor |
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