JPS5637879A - Cash memory control system - Google Patents
Cash memory control systemInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE38099E1 (en) | 1991-05-14 | 2003-04-29 | Shimano Inc. | Spinning reel having balancer |
-
1979
- 1979-09-04 JP JP11386979A patent/JPS5637879A/en active Pending
Cited By (1)
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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