JPS56114022A - Clock control system for electronic computer - Google Patents

Clock control system for electronic computer

Info

Publication number
JPS56114022A
JPS56114022A JP1691880A JP1691880A JPS56114022A JP S56114022 A JPS56114022 A JP S56114022A JP 1691880 A JP1691880 A JP 1691880A JP 1691880 A JP1691880 A JP 1691880A JP S56114022 A JPS56114022 A JP S56114022A
Authority
JP
Japan
Prior art keywords
clock
microinstruction
cycle
control
signals
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
JP1691880A
Other languages
Japanese (ja)
Inventor
Keizo Aoyanagi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP1691880A priority Critical patent/JPS56114022A/en
Publication of JPS56114022A publication Critical patent/JPS56114022A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/22—Microcontrol or microprogram arrangements
    • G06F9/223—Execution means for microinstructions irrespective of the microinstruction function, e.g. decoding of microinstructions and nanoinstructions; timing of microinstructions; programmable logic arrays; delays and fan-out problems

Abstract

PURPOSE:To ensure an execution of an arithmetic action for a microinstruction in the minimum time, by providing the clock control bit to the microinstruction and controlling the cycle of the clock. CONSTITUTION:The clock control bit is provided to the microinstruction read out of a micromemory and decoded into two control signals B1 and B2. These two control signals are applied to an FF circuit that divides the basic clock 1 and delivers the control clock. In this case, the clock 2 is obtained with the cycle double as much as the clock 1 when both signals B1 and B2 are 0, with a triple cycle when the signals B1 and B2 are 1 and 0, respectively, and with a quadruple cycle when the signal B2 is 1, respectively. Accordingly, the arithmetic process can be executed in the minimum time for a microinstruction by setting previously the operation time corresponding to each microinstruction in the control field.
JP1691880A 1980-02-14 1980-02-14 Clock control system for electronic computer Pending JPS56114022A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1691880A JPS56114022A (en) 1980-02-14 1980-02-14 Clock control system for electronic computer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1691880A JPS56114022A (en) 1980-02-14 1980-02-14 Clock control system for electronic computer

Publications (1)

Publication Number Publication Date
JPS56114022A true JPS56114022A (en) 1981-09-08

Family

ID=11929504

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1691880A Pending JPS56114022A (en) 1980-02-14 1980-02-14 Clock control system for electronic computer

Country Status (1)

Country Link
JP (1) JPS56114022A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979142A (en) * 1972-12-01 1974-07-31
JPS51147142A (en) * 1975-06-13 1976-12-17 Hitachi Ltd Control system of machine cycle of micro instruction
JPS52116035A (en) * 1976-03-26 1977-09-29 Hitachi Ltd Data processing unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4979142A (en) * 1972-12-01 1974-07-31
JPS51147142A (en) * 1975-06-13 1976-12-17 Hitachi Ltd Control system of machine cycle of micro instruction
JPS52116035A (en) * 1976-03-26 1977-09-29 Hitachi Ltd Data processing unit

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