JPS5635231A - Initializing system for memory - Google Patents

Initializing system for memory

Info

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
Application number
JP11031679A
Other languages
Japanese (ja)
Inventor
Ginzo Yamazaki
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
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11031679A priority Critical patent/JPS5635231A/en
Publication of JPS5635231A publication Critical patent/JPS5635231A/en
Pending legal-status Critical Current

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
JP11031679A 1979-08-31 1979-08-31 Initializing system for memory Pending JPS5635231A (en)

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)

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