JPS56103743A - Microprogram controller - Google Patents

Microprogram controller

Info

Publication number
JPS56103743A
JPS56103743A JP612080A JP612080A JPS56103743A JP S56103743 A JPS56103743 A JP S56103743A JP 612080 A JP612080 A JP 612080A JP 612080 A JP612080 A JP 612080A JP S56103743 A JPS56103743 A JP S56103743A
Authority
JP
Japan
Prior art keywords
control
counter
circuit
clock
time
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
JP612080A
Other languages
Japanese (ja)
Inventor
Akira Fukuda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP612080A priority Critical patent/JPS56103743A/en
Publication of JPS56103743A publication Critical patent/JPS56103743A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To enable versatile time control between microinstructions, by stopping the control operation with one microinstruction of an address generating circuit and releasing the stop with an overflow detection circuit and an external signal. CONSTITUTION:When a time limit control microinstruction is executed, a control circuit 18 is started, and a time limit data is set to a data counter 19 in the circuit 18 from an operation circuit 15. Further, a control FF21 is also set at the same time when the counter 19 is set, and the increment operation by the clock signal from a timing generating circuit 16 is permitted to the counter 19 with the output signal of FF21. On the other hand, the output of FF21 closes a gate circuit 17 to stop the operation of an address counter 12 counting the clock of the generating circuit 16 and to store the next address of the read only memory 11. With this state, the counter 19 closes the count of clock, the overflow of counter is detected at an overflow detection circuit 23, and FF21 is reset to control time control with variety.
JP612080A 1980-01-21 1980-01-21 Microprogram controller Pending JPS56103743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP612080A JPS56103743A (en) 1980-01-21 1980-01-21 Microprogram controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP612080A JPS56103743A (en) 1980-01-21 1980-01-21 Microprogram controller

Publications (1)

Publication Number Publication Date
JPS56103743A true JPS56103743A (en) 1981-08-19

Family

ID=11629640

Family Applications (1)

Application Number Title Priority Date Filing Date
JP612080A Pending JPS56103743A (en) 1980-01-21 1980-01-21 Microprogram controller

Country Status (1)

Country Link
JP (1) JPS56103743A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63113730A (en) * 1986-10-31 1988-05-18 Agency Of Ind Science & Technol Controlling system for microprogram
JPH04304528A (en) * 1991-04-01 1992-10-27 Matsushita Electric Ind Co Ltd Sequence control circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63113730A (en) * 1986-10-31 1988-05-18 Agency Of Ind Science & Technol Controlling system for microprogram
JPH04304528A (en) * 1991-04-01 1992-10-27 Matsushita Electric Ind Co Ltd Sequence control circuit

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