JPS57189256A - Digital signal processor - Google Patents

Digital signal processor

Info

Publication number
JPS57189256A
JPS57189256A JP7429281A JP7429281A JPS57189256A JP S57189256 A JPS57189256 A JP S57189256A JP 7429281 A JP7429281 A JP 7429281A JP 7429281 A JP7429281 A JP 7429281A JP S57189256 A JPS57189256 A JP S57189256A
Authority
JP
Japan
Prior art keywords
control signal
selection
selection control
storage device
information storage
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
JP7429281A
Other languages
Japanese (ja)
Inventor
Kazuhide Nishiyama
Shigeru Komatsu
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 JP7429281A priority Critical patent/JPS57189256A/en
Publication of JPS57189256A publication Critical patent/JPS57189256A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/06—Addressing a physical block of locations, e.g. base addressing, module addressing, memory dedication
    • G06F12/0638—Combination of memories, e.g. ROM and RAM such as to permit replacement or supplementing of words in one module by words in another module

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Executing Machine-Instructions (AREA)

Abstract

PURPOSE:To increase the speed of write processing, by automatically making the selection and changeover of a readout only fixed information storage device and read/write possible arbitrary information storage device. CONSTITUTION:At the setting of information from a CPU 1, the secondary selection control signal indicating the selection of an arbitrary information storage device 5 at all times is outputted from the secondary selection control signal generating circuit 17 to a switching circuit 4 and at the referencing of information, a selection control signal of storage devices 5 and 6 indicated by a primary selection control signal generating circuit 15 is outputted from the circuit 17 to the switching circuit 4. Since the selection and changeover of the storage circuits 5 and 6 is automatically made, the speed of write processing can be increased by about 30%.
JP7429281A 1981-05-19 1981-05-19 Digital signal processor Pending JPS57189256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7429281A JPS57189256A (en) 1981-05-19 1981-05-19 Digital signal processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7429281A JPS57189256A (en) 1981-05-19 1981-05-19 Digital signal processor

Publications (1)

Publication Number Publication Date
JPS57189256A true JPS57189256A (en) 1982-11-20

Family

ID=13542911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7429281A Pending JPS57189256A (en) 1981-05-19 1981-05-19 Digital signal processor

Country Status (1)

Country Link
JP (1) JPS57189256A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033644A (en) * 1983-08-05 1985-02-21 Nippon Sheet Glass Co Ltd Memory bank switching method and its device
JPS60229154A (en) * 1984-04-26 1985-11-14 Sony Corp Bank switching device of memory

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6033644A (en) * 1983-08-05 1985-02-21 Nippon Sheet Glass Co Ltd Memory bank switching method and its device
JPS60229154A (en) * 1984-04-26 1985-11-14 Sony Corp Bank switching device of memory

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