JPS556679A - Check system of error control circuit - Google Patents
Check system of error control circuitInfo
- Publication number
- JPS556679A JPS556679A JP7958178A JP7958178A JPS556679A JP S556679 A JPS556679 A JP S556679A JP 7958178 A JP7958178 A JP 7958178A JP 7958178 A JP7958178 A JP 7958178A JP S556679 A JPS556679 A JP S556679A
- Authority
- JP
- Japan
- Prior art keywords
- error
- memory
- register
- generator
- data
- 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 simplify a check on a circuit by providing an error generator in a memory unit, by reading out data from a memory address when a start flag is registered in an error control register constituting the error generator and by modifying the read data according to the content of the error data register.
CONSTITUTION: The check system consists of central processor 1, memory 2, common bus 3, error generator 4, error control register 5, error address register 6, error data register 7, bit inverter 8, DMA control part 9, parity checking-generator 10, etc. In the constitution, unit 1 write desired data to registers 6 and 7 after the data are written to memory 2 and a start flag is set in register 7 to operate generator 4, thereby storing addresses in memory 2 in generator 4. Next, EOR with register 7 is extracted and stored at the original address of memory 2 and data with its parity bit disagreeing with the information bit is written to memory 2.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7958178A JPS556679A (en) | 1978-06-30 | 1978-06-30 | Check system of error control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7958178A JPS556679A (en) | 1978-06-30 | 1978-06-30 | Check system of error control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS556679A true JPS556679A (en) | 1980-01-18 |
Family
ID=13693942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7958178A Pending JPS556679A (en) | 1978-06-30 | 1978-06-30 | Check system of error control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS556679A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56144985U (en) * | 1980-03-28 | 1981-10-31 |
-
1978
- 1978-06-30 JP JP7958178A patent/JPS556679A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56144985U (en) * | 1980-03-28 | 1981-10-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5530727A (en) | Information processor | |
JPS556679A (en) | Check system of error control circuit | |
JPS5617489A (en) | Character display processing system | |
JPS54122059A (en) | Inter-processor information transfer system | |
JPS623520B2 (en) | ||
JPS558617A (en) | Storage system | |
JPS5577072A (en) | Buffer memory control system | |
JPS5452936A (en) | Memroy processor | |
JPS5563453A (en) | Memory system | |
JPS55105884A (en) | Address conversion device | |
JPS5694592A (en) | Data processor | |
JPS55146551A (en) | Information processing unit | |
JPS5533282A (en) | Buffer control system | |
JPS5557962A (en) | Error detection system | |
JPS55112688A (en) | Detection circuit for optional character | |
JPS5567985A (en) | Information processor | |
JPS5587397A (en) | Memory device | |
JPS6488641A (en) | Information processor | |
JPS5447446A (en) | Magnetic disc control unit | |
JPS5622281A (en) | Buffer memory control system | |
JPS5578324A (en) | Direct memory access system | |
JPS5552598A (en) | Data processor | |
JPS56123043A (en) | Address stop circuit of data processor | |
JPS5563448A (en) | Information processor | |
JPS53123638A (en) | Stored program processing system |