JPS5528501A - Test system for memory device - Google Patents

Test system for memory device

Info

Publication number
JPS5528501A
JPS5528501A JP9705778A JP9705778A JPS5528501A JP S5528501 A JPS5528501 A JP S5528501A JP 9705778 A JP9705778 A JP 9705778A JP 9705778 A JP9705778 A JP 9705778A JP S5528501 A JPS5528501 A JP S5528501A
Authority
JP
Japan
Prior art keywords
test
writing
memory device
error test
action
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
JP9705778A
Other languages
Japanese (ja)
Inventor
Yoshiaki Tsuda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9705778A priority Critical patent/JPS5528501A/en
Publication of JPS5528501A publication Critical patent/JPS5528501A/en
Pending legal-status Critical Current

Links

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE: To shorten the test time of the memory device without lowering the fault detecting capacity by applying the error test mechanism the normal memory device features for the partial writing action also to the full writing action of the test time.
CONSTITUTION: When the full writing action is given to the fixed memory unit via processor 1 and memory device 2, the error test information is added to the writing data. Thus a test is given based on the added error test information for reading when the data is read out of the memory unit. For the partial writing, the data is rewritten partially after giving the reading action in accordance with the error test, and the error test information is added to the new data to the error test for writing. With supply of the test mode signal from processor 1, the error test mechanism for the normal partial writing is applied also to the full writing action. Thus the test time can be shortened.
COPYRIGHT: (C)1980,JPO&Japio
JP9705778A 1978-08-08 1978-08-08 Test system for memory device Pending JPS5528501A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9705778A JPS5528501A (en) 1978-08-08 1978-08-08 Test system for memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9705778A JPS5528501A (en) 1978-08-08 1978-08-08 Test system for memory device

Publications (1)

Publication Number Publication Date
JPS5528501A true JPS5528501A (en) 1980-02-29

Family

ID=14182018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9705778A Pending JPS5528501A (en) 1978-08-08 1978-08-08 Test system for memory device

Country Status (1)

Country Link
JP (1) JPS5528501A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02234251A (en) * 1989-03-08 1990-09-17 Nec Corp Control system for extended storage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02234251A (en) * 1989-03-08 1990-09-17 Nec Corp Control system for extended storage

Similar Documents

Publication Publication Date Title
JPS53124935A (en) Control system for disc unit
JPS5528501A (en) Test system for memory device
JPS55163697A (en) Memory device
JPS5576475A (en) Card processor
JPS5350813A (en) Information memory device
JPS57130291A (en) Semiconductor nonvolatile read-only storage device
JPS5474644A (en) Control system of microprogram
JPS56159747A (en) Program testing device
JPS5374849A (en) Checking method for writing data
JPS5447446A (en) Magnetic disc control unit
JPS54122945A (en) Memory circuit
JPS57763A (en) External memory device
JPS5587396A (en) Memory test system
JPS5685172A (en) Rewriting system pseudoerror
JPS55119761A (en) Memory control unit
JPS5683900A (en) Buffer recording device
JPS57208615A (en) Writing controlling system of magnetic disk device
JPS5424612A (en) Error detecting system of data memory device
JPS54104743A (en) Failure detection system for magnetic memory unit
JPS5543694A (en) Information memory retrieving device
JPS5537625A (en) Data storing read system
JPS5680898A (en) Memory device
JPS57120163A (en) Computer system
JPS5587261A (en) Cartridge transfer confirmation system
JPS56134398A (en) Check system for error detecting and correcting circuit