JPS578805A - Address stopping circuit - Google Patents

Address stopping circuit

Info

Publication number
JPS578805A
JPS578805A JP8141780A JP8141780A JPS578805A JP S578805 A JPS578805 A JP S578805A JP 8141780 A JP8141780 A JP 8141780A JP 8141780 A JP8141780 A JP 8141780A JP S578805 A JPS578805 A JP S578805A
Authority
JP
Japan
Prior art keywords
address
ram23
stas
many
bus
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
JP8141780A
Other languages
Japanese (ja)
Inventor
Kazuto Sato
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 Engineering Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Engineering Co Ltd
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 Engineering Co Ltd, Hitachi Ltd filed Critical Hitachi Engineering Co Ltd
Priority to JP8141780A priority Critical patent/JPS578805A/en
Publication of JPS578805A publication Critical patent/JPS578805A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Control By Computers (AREA)

Abstract

PURPOSE:To set many stop addresses (STA) with less hardware constitution by providing multiplexers (MX) which change address buses of systems A and B and a bit RAM wherein the STAs are set. CONSTITUTION:The same bit 1 with an address to be stopped from a system A to a B is set in an address of an RAM23. Then, MXs 21 and 22 select an A-system address bus 10 only when reading 13 and writing 14 of the contents of the RAM23, and a B-system address bus 20 normally. When the address of the RAM23 wherein a 1 is set is accessed from the bus 20, a detection signal for address conincidence is outputted from the RAM23 and this is used as a stop request signal 29 to the system B. Thus, many STAs are set without requiring registers as many as the set STAs.
JP8141780A 1980-06-18 1980-06-18 Address stopping circuit Pending JPS578805A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8141780A JPS578805A (en) 1980-06-18 1980-06-18 Address stopping circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8141780A JPS578805A (en) 1980-06-18 1980-06-18 Address stopping circuit

Publications (1)

Publication Number Publication Date
JPS578805A true JPS578805A (en) 1982-01-18

Family

ID=13745767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8141780A Pending JPS578805A (en) 1980-06-18 1980-06-18 Address stopping circuit

Country Status (1)

Country Link
JP (1) JPS578805A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62197342A (en) * 1986-02-24 1987-09-01 東レ株式会社 Manufacture of fiber reinforced inorganic product

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62197342A (en) * 1986-02-24 1987-09-01 東レ株式会社 Manufacture of fiber reinforced inorganic product

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