JPS5674736A - Communication controlling device by microprogram controlling system - Google Patents

Communication controlling device by microprogram controlling system

Info

Publication number
JPS5674736A
JPS5674736A JP15271479A JP15271479A JPS5674736A JP S5674736 A JPS5674736 A JP S5674736A JP 15271479 A JP15271479 A JP 15271479A JP 15271479 A JP15271479 A JP 15271479A JP S5674736 A JPS5674736 A JP S5674736A
Authority
JP
Japan
Prior art keywords
signal
function
microinstruction
turned
microprogram
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
JP15271479A
Other languages
Japanese (ja)
Inventor
Nobufumi Motomura
Yoshihisa Ogawa
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15271479A priority Critical patent/JPS5674736A/en
Publication of JPS5674736A publication Critical patent/JPS5674736A/en
Pending legal-status Critical Current

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Landscapes

  • Computer And Data Communications (AREA)
  • Communication Control (AREA)

Abstract

PURPOSE: To make the same function available for the microprogram, by constituting the system so that the control can be returned to the next step of the microinstruction which has requested execution of the function, after execution of the requested function has been completed.
CONSTITUTION: In case when the microinstruction read by the memory register 12 has been the CALL instruction, the logical product is taken as to the processing start address part of the microinstruction and the address setting signal, and in case of coincidence, a start signal is provided to the optional hardware functions 20, 21. When the functions 20, 21 are not loaded, however, the CALL instruction is executed and the subroutines S1, T1 are executed. When the start signal is provided to the function 20, the signal S1 is turned on, the arithmetic circuit 18 is stopped, the signal A is turned on, the next instruction address is set to the instruction address register 10, the next microinstruction is read out, and it is frozen to the register 12. When the function 20 executes the same processing as the subroutine S1, and it has been completed, the signal S1 is turned off, and the unit is returned to the regular operation.
COPYRIGHT: (C)1981,JPO&Japio
JP15271479A 1979-11-26 1979-11-26 Communication controlling device by microprogram controlling system Pending JPS5674736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15271479A JPS5674736A (en) 1979-11-26 1979-11-26 Communication controlling device by microprogram controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15271479A JPS5674736A (en) 1979-11-26 1979-11-26 Communication controlling device by microprogram controlling system

Publications (1)

Publication Number Publication Date
JPS5674736A true JPS5674736A (en) 1981-06-20

Family

ID=15546542

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15271479A Pending JPS5674736A (en) 1979-11-26 1979-11-26 Communication controlling device by microprogram controlling system

Country Status (1)

Country Link
JP (1) JPS5674736A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194266A (en) * 1983-04-18 1984-11-05 Jeol Ltd Fast fourier transforming device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59194266A (en) * 1983-04-18 1984-11-05 Jeol Ltd Fast fourier transforming device

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