JPS56110131A - Data transfer system of independent completion type microprocessor - Google Patents

Data transfer system of independent completion type microprocessor

Info

Publication number
JPS56110131A
JPS56110131A JP1343880A JP1343880A JPS56110131A JP S56110131 A JPS56110131 A JP S56110131A JP 1343880 A JP1343880 A JP 1343880A JP 1343880 A JP1343880 A JP 1343880A JP S56110131 A JPS56110131 A JP S56110131A
Authority
JP
Japan
Prior art keywords
bit
address
word
memory
access
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.)
Granted
Application number
JP1343880A
Other languages
Japanese (ja)
Other versions
JPS6232832B2 (en
Inventor
Nobuo Nakagawa
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1343880A priority Critical patent/JPS56110131A/en
Publication of JPS56110131A publication Critical patent/JPS56110131A/en
Publication of JPS6232832B2 publication Critical patent/JPS6232832B2/ja
Granted 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
    • G06F12/04—Addressing variable-length words or parts of words

Abstract

PURPOSE:To transfer both the bit and the work to the same memory address, by adding the bit/word control circuit to the data and address bus line between the microprocessor and the memory. CONSTITUTION:At the time of processing of the bit, 1 chip of the bit memories 8a-8h of the memory bank 2a is accessed by the bit decoder 13, also a chip enable signal 17 and a read/write signal 20 access the two-way driver 15, and the bit is transferred. The address of each memory 8a-8h is selected by the address 12. At the time of processing of the word, the decoder 13 is ineffective, and the memories 8a-8h are all accessed by a word access signal 24. At the same time, a chip enable signal 18 and a read/write signal 22 access the two-way but driver 14, and the bit is transferred. In this way, the bit/word processings are executed by only changing the format of the address bus.
JP1343880A 1980-02-06 1980-02-06 Data transfer system of independent completion type microprocessor Granted JPS56110131A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1343880A JPS56110131A (en) 1980-02-06 1980-02-06 Data transfer system of independent completion type microprocessor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1343880A JPS56110131A (en) 1980-02-06 1980-02-06 Data transfer system of independent completion type microprocessor

Publications (2)

Publication Number Publication Date
JPS56110131A true JPS56110131A (en) 1981-09-01
JPS6232832B2 JPS6232832B2 (en) 1987-07-16

Family

ID=11833127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1343880A Granted JPS56110131A (en) 1980-02-06 1980-02-06 Data transfer system of independent completion type microprocessor

Country Status (1)

Country Link
JP (1) JPS56110131A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168347A (en) * 1981-04-09 1982-10-16 Toshiba Corp Computer system
JPS603771A (en) * 1983-06-22 1985-01-10 Mitsubishi Electric Corp Interface circuit of programmable controller
JPS61150007A (en) * 1984-12-25 1986-07-08 Meidensha Electric Mfg Co Ltd Programmable controller possible for bit/byte access

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57168347A (en) * 1981-04-09 1982-10-16 Toshiba Corp Computer system
JPS603771A (en) * 1983-06-22 1985-01-10 Mitsubishi Electric Corp Interface circuit of programmable controller
JPS61150007A (en) * 1984-12-25 1986-07-08 Meidensha Electric Mfg Co Ltd Programmable controller possible for bit/byte access

Also Published As

Publication number Publication date
JPS6232832B2 (en) 1987-07-16

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