JPS5637879A - Cash memory control system - Google Patents

Cash memory control system

Info

Publication number
JPS5637879A
JPS5637879A JP11386979A JP11386979A JPS5637879A JP S5637879 A JPS5637879 A JP S5637879A JP 11386979 A JP11386979 A JP 11386979A JP 11386979 A JP11386979 A JP 11386979A JP S5637879 A JPS5637879 A JP S5637879A
Authority
JP
Japan
Prior art keywords
selector
main memory
memory unit
cash
program
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
JP11386979A
Other languages
Japanese (ja)
Inventor
Masatoshi Koto
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 JP11386979A priority Critical patent/JPS5637879A/en
Publication of JPS5637879A publication Critical patent/JPS5637879A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to test a main memory unit to which a fault is happening, by controlling data transfer from the outside to a cash memory or vice versa by controlling a selector in accordance with selection modes.
CONSTITUTION: Once the main memory unit runs into trouble, write indication signal 42 is inverted, and consequently selector 32 inhibits data transfer from the main memory unit and also selects a test program from an external unit other than the main memory unit, writing the program in data memory part 19 of the cash memory. Then when the test mode is selected through test mode contol circuit 35, selectors 37 and 26 are brought control and selector 24 is further controlled through selector 37 to attain access to only memory part 19 in cash memory access, the main memory unit in trouble will be tested on the basis of the program in memory part 19.
COPYRIGHT: (C)1981,JPO&Japio
JP11386979A 1979-09-04 1979-09-04 Cash memory control system Pending JPS5637879A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11386979A JPS5637879A (en) 1979-09-04 1979-09-04 Cash memory control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11386979A JPS5637879A (en) 1979-09-04 1979-09-04 Cash memory control system

Publications (1)

Publication Number Publication Date
JPS5637879A true JPS5637879A (en) 1981-04-11

Family

ID=14623137

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11386979A Pending JPS5637879A (en) 1979-09-04 1979-09-04 Cash memory control system

Country Status (1)

Country Link
JP (1) JPS5637879A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE38099E1 (en) 1991-05-14 2003-04-29 Shimano Inc. Spinning reel having balancer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE38099E1 (en) 1991-05-14 2003-04-29 Shimano Inc. Spinning reel having balancer

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