JPS6488818A - Memory structure - Google Patents

Memory structure

Info

Publication number
JPS6488818A
JPS6488818A JP62246199A JP24619987A JPS6488818A JP S6488818 A JPS6488818 A JP S6488818A JP 62246199 A JP62246199 A JP 62246199A JP 24619987 A JP24619987 A JP 24619987A JP S6488818 A JPS6488818 A JP S6488818A
Authority
JP
Japan
Prior art keywords
data
sector
code
transferred
storage position
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
Application number
JP62246199A
Other languages
Japanese (ja)
Inventor
Kiyoshi Murase
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP62246199A priority Critical patent/JPS6488818A/en
Publication of JPS6488818A publication Critical patent/JPS6488818A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To simplify address calculation by divisionally allocating data in a data area and an error code area in a system where a memory such as a virtual disk is divided into arbitrary data blocks to transfer data with a block as the unit. CONSTITUTION:At the time of writing data, data in a sector to be written is transferred to the data storage position designated by a sector number, a head number, and a cylinder number, and a check sum code is generated and is stored in a pertinent check sum storage position. At the time of read, data corresponding to a designated sector is transferred to a designated address, and the check sum code is generated in the same manner as data write, and contents in the storage position corresponding to the transferred sector and the value generated during transfer are compared with each other; and if they are different from each other, the occurrence of read error is judged to set an error status. A virtual memory area 1 consists of data storage areas 11D-1nD and check code storage areas 11S-1nS.
JP62246199A 1987-09-30 1987-09-30 Memory structure Pending JPS6488818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62246199A JPS6488818A (en) 1987-09-30 1987-09-30 Memory structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62246199A JPS6488818A (en) 1987-09-30 1987-09-30 Memory structure

Publications (1)

Publication Number Publication Date
JPS6488818A true JPS6488818A (en) 1989-04-03

Family

ID=17144983

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62246199A Pending JPS6488818A (en) 1987-09-30 1987-09-30 Memory structure

Country Status (1)

Country Link
JP (1) JPS6488818A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743239A1 (en) * 1997-09-30 1999-04-08 Siemens Ag Testing groups of data consisting of several bytes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743239A1 (en) * 1997-09-30 1999-04-08 Siemens Ag Testing groups of data consisting of several bytes
DE19743239C2 (en) * 1997-09-30 1999-07-15 Siemens Ag Method for checking groups of data formed from several bytes
US6256765B1 (en) 1997-09-30 2001-07-03 Siemens Aktiengesellschaft Method for checking groups of data formed from a plurality of bytes

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