JPS57180000A - Main storage device - Google Patents
Main storage deviceInfo
- Publication number
- JPS57180000A JPS57180000A JP56063989A JP6398981A JPS57180000A JP S57180000 A JPS57180000 A JP S57180000A JP 56063989 A JP56063989 A JP 56063989A JP 6398981 A JP6398981 A JP 6398981A JP S57180000 A JPS57180000 A JP S57180000A
- Authority
- JP
- Japan
- Prior art keywords
- data line
- data
- ecc
- inputted
- pcg
- 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.)
- Granted
Links
Landscapes
- Detection And Correction Of Errors (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
PURPOSE: To make report to other devices, by speeding up a memory access time through parallel provision of an error correcting system (ECC) and a parity check and generating circuit (PCG) and adding the result of check of the ECC to a data through readout.
CONSTITUTION: A main storage device MM32 receives a write data on a system bus 34 through a data line 53. A data in 16-bit among write data is inputted to an error correction, check and generating circuit ECC-CG49 through the data line 55, a driver 38, a data line 56, a driver 41, a data line 57 and a data line 58 and also inputted to a PCG 52 through a data line 59. On the other hand, a parity bit in 2-bit is inputted to the parity check generating circuit PCG 52 through a data line 54. In the ECC-CG49, an ECC check code CKC is generated and inputted to a memory card MEM 37 through a data line 61, a driver 42 and data lines 62 and 63. On the other hand in the PCG 52, the parity check is made in parallel with the generating operation of the CKC.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56063989A JPS6041382B2 (en) | 1981-04-30 | 1981-04-30 | main storage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56063989A JPS6041382B2 (en) | 1981-04-30 | 1981-04-30 | main storage |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57180000A true JPS57180000A (en) | 1982-11-05 |
JPS6041382B2 JPS6041382B2 (en) | 1985-09-17 |
Family
ID=13245195
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56063989A Expired JPS6041382B2 (en) | 1981-04-30 | 1981-04-30 | main storage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6041382B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59191200A (en) * | 1983-04-14 | 1984-10-30 | Omron Tateisi Electronics Co | Method for checking program data |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5342647A (en) * | 1976-09-30 | 1978-04-18 | Toko Inc | Surface acoustic wave device |
-
1981
- 1981-04-30 JP JP56063989A patent/JPS6041382B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5342647A (en) * | 1976-09-30 | 1978-04-18 | Toko Inc | Surface acoustic wave device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59191200A (en) * | 1983-04-14 | 1984-10-30 | Omron Tateisi Electronics Co | Method for checking program data |
Also Published As
Publication number | Publication date |
---|---|
JPS6041382B2 (en) | 1985-09-17 |
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