JPS5736352A - Memory setting system - Google Patents

Memory setting system

Info

Publication number
JPS5736352A
JPS5736352A JP11008780A JP11008780A JPS5736352A JP S5736352 A JPS5736352 A JP S5736352A JP 11008780 A JP11008780 A JP 11008780A JP 11008780 A JP11008780 A JP 11008780A JP S5736352 A JPS5736352 A JP S5736352A
Authority
JP
Japan
Prior art keywords
rom203
rom
circuit
ram202
cpu201
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
JP11008780A
Other languages
Japanese (ja)
Inventor
Motojiro Nishio
Katsuyuki Iijima
Yoshihisa Shiomi
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 JP11008780A priority Critical patent/JPS5736352A/en
Publication of JPS5736352A publication Critical patent/JPS5736352A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Computer And Data Communications (AREA)
  • Memory System (AREA)

Abstract

PURPOSE:To reduce heat generation and power consumption of an ROM, by storing the contents of the ROM in an RAM under the control of a controlling circuit after the electric power is supplied and before the RAM is used, and then, unconnecting the connection of the ROM and controlling the use of the ROM by a portable type digital communication equipment. CONSTITUTION:To a CPU201 constituted with a microcomputer, an RAM202 functioning as a main storage part controlled by the CPU201 is connected, and then, a controlling circuit 204 which is connected to an ROM203 which stores programs which specifies control of the CPU201, is connected. Moreover, an ROM unconnecting circuit 205 is connected between the controlling circuit 204 and the RAM202. The controlling circuit 204 detects that the electric power is supplied to the CPU201, and writes the contents of the ROM203 into the RAM202 in every word. The circuit 204 confirms that the content of the ROM203 is written into the RAM202 up to the most suitable address, and the connection to the ROM203 is unconnected by the circuit 205, and thus the use of the ROM203 is controlled and heat generation and power consumption of the ROM203 are reduced.
JP11008780A 1980-08-11 1980-08-11 Memory setting system Pending JPS5736352A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11008780A JPS5736352A (en) 1980-08-11 1980-08-11 Memory setting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11008780A JPS5736352A (en) 1980-08-11 1980-08-11 Memory setting system

Publications (1)

Publication Number Publication Date
JPS5736352A true JPS5736352A (en) 1982-02-27

Family

ID=14526687

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11008780A Pending JPS5736352A (en) 1980-08-11 1980-08-11 Memory setting system

Country Status (1)

Country Link
JP (1) JPS5736352A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184656A (en) * 1982-04-22 1983-10-28 Nec Corp Program storage system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58184656A (en) * 1982-04-22 1983-10-28 Nec Corp Program storage system

Similar Documents

Publication Publication Date Title
AU534177B2 (en) Electrolyte supply in chloralkali cell
JPS5736352A (en) Memory setting system
JPS5441631A (en) Fixed program set system for control
JPS5523586A (en) Screen information control system
JPS55109985A (en) Timer unit
JPS56154865A (en) Rewriting device for subscriber service data
JPS5498124A (en) Memory device
JPS5731047A (en) Microprogram control device
JPS52153633A (en) Memory correcting system
JPS54159575A (en) Timer for electric blanket
JPS5712481A (en) Semiconductor memory device
JPS56134382A (en) Memory control system of computer on virtual memory control system
JPS57185504A (en) Sequencer
JPS5577098A (en) Memory support unit
JPS5589986A (en) Refresh control system
JPS5444447A (en) Power supply circuit to non-volatile memory
JPS5674277A (en) Toner supply device
JPS57164335A (en) Computer controlling system
JPS5749737A (en) Hot water supply equipment utilizing solar heat
JPS52120411A (en) Highly pressurized natural gas trnsportation method
JPS5656018A (en) Fade voltage generator
JPS6486651A (en) Program load system for electronic exchange terminal equipment
JPS5523751A (en) Power supply control and connecting system
JPS5723474A (en) Molten salt battery
JPS5588115A (en) Input-output subsystem