JPS57180000A - Main storage device - Google Patents

Main storage device

Info

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
Application number
JP56063989A
Other languages
Japanese (ja)
Other versions
JPS6041382B2 (en
Inventor
Sei Yano
Tooru Sadashi
Atsushi Sakurai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority to JP56063989A priority Critical patent/JPS6041382B2/en
Publication of JPS57180000A publication Critical patent/JPS57180000A/en
Publication of JPS6041382B2 publication Critical patent/JPS6041382B2/en
Expired legal-status Critical Current

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
JP56063989A 1981-04-30 1981-04-30 main storage Expired JPS6041382B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5342647A (en) * 1976-09-30 1978-04-18 Toko Inc Surface acoustic wave device

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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