JPS5567994A - Data processor - Google Patents

Data processor

Info

Publication number
JPS5567994A
JPS5567994A JP13989878A JP13989878A JPS5567994A JP S5567994 A JPS5567994 A JP S5567994A JP 13989878 A JP13989878 A JP 13989878A JP 13989878 A JP13989878 A JP 13989878A JP S5567994 A JPS5567994 A JP S5567994A
Authority
JP
Japan
Prior art keywords
memory unit
register
dummy
cycle
post
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
JP13989878A
Other languages
Japanese (ja)
Inventor
Yoichi Okada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13989878A priority Critical patent/JPS5567994A/en
Publication of JPS5567994A publication Critical patent/JPS5567994A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
    • G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
    • G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
    • G11C11/406—Management or control of the refreshing or charge-regeneration cycles

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Debugging And Monitoring (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To secure the start of data processing in a short time by performing repetitive storage operation of the auxiliary program storage region of a main memory unit in a dummy cycle and also by repeatedly refreshing the remaining region. CONSTITUTION:Right after power feed or recovery from a power failure, a program read out from auxiliary memory unit 3 through control circuit 4 and address register 5 is written at the same address of main memory unit 1 for a dummy cycle and when it is detected by final address register 6, a dummy-cycle counter starts adding count operation through register 6 and register 5 is initialized. Then, the opertion of counter 7 is repeated until its value exceeds the value of a setting circuit and circuit 4 generates a post-stage processing signal by an overflow signal, thereby repeating the dummy cycle. At the same time or in a period until the start of post-stage processing, the remaining region of unit 1 is repeatedly refreshed to stabilize memory contents in a short time before the whole memory unit becomes ready to operate, thereby shortening the data processing rise time.
JP13989878A 1978-11-15 1978-11-15 Data processor Pending JPS5567994A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13989878A JPS5567994A (en) 1978-11-15 1978-11-15 Data processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13989878A JPS5567994A (en) 1978-11-15 1978-11-15 Data processor

Publications (1)

Publication Number Publication Date
JPS5567994A true JPS5567994A (en) 1980-05-22

Family

ID=15256177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13989878A Pending JPS5567994A (en) 1978-11-15 1978-11-15 Data processor

Country Status (1)

Country Link
JP (1) JPS5567994A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265048A (en) * 1990-03-05 1993-11-23 Mitysubishi Denki Kabushiki Kaisha Semiconductor storage device and method of accessing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5265048A (en) * 1990-03-05 1993-11-23 Mitysubishi Denki Kabushiki Kaisha Semiconductor storage device and method of accessing the same

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