JPS5635231A - Initializing system for memory - Google Patents
Initializing system for memoryInfo
- Publication number
- JPS5635231A JPS5635231A JP11031679A JP11031679A JPS5635231A JP S5635231 A JPS5635231 A JP S5635231A JP 11031679 A JP11031679 A JP 11031679A JP 11031679 A JP11031679 A JP 11031679A JP S5635231 A JPS5635231 A JP S5635231A
- Authority
- JP
- Japan
- Prior art keywords
- memory
- contents
- signal
- cpu2
- rewriting
- 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 avoid the rewriting of the contents for the nonvolatile memory of the memory device consisting of the volatile memory and the nonvolatile memory, by securing an automatic initialization only for the volatile memory in the application of the power source.
CONSTITUTION: The main memory 4 contains both the nonvilatile memory 4NV and the volatile memory 4V. When the power source is switched on, the signal is generated from the signal generator provided to the CPU2. Receiving this signal, the address part of the CPU2 gives an acess to the start address of the initializing program stored in the memory 4NV to carry out the reading. The contents of the memory 4V filed into the external memory device is read out of the memory 4V by the program and then written into the memory 4V again. In such way, the rewriting of the contents can be avoided for the nonvolatile memory.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11031679A JPS5635231A (en) | 1979-08-31 | 1979-08-31 | Initializing system for memory |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11031679A JPS5635231A (en) | 1979-08-31 | 1979-08-31 | Initializing system for memory |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5635231A true JPS5635231A (en) | 1981-04-07 |
Family
ID=14532618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11031679A Pending JPS5635231A (en) | 1979-08-31 | 1979-08-31 | Initializing system for memory |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5635231A (en) |
-
1979
- 1979-08-31 JP JP11031679A patent/JPS5635231A/en active Pending
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