JPS54152939A - Microprogram interruption control system - Google Patents

Microprogram interruption control system

Info

Publication number
JPS54152939A
JPS54152939A JP6207978A JP6207978A JPS54152939A JP S54152939 A JPS54152939 A JP S54152939A JP 6207978 A JP6207978 A JP 6207978A JP 6207978 A JP6207978 A JP 6207978A JP S54152939 A JPS54152939 A JP S54152939A
Authority
JP
Japan
Prior art keywords
interruption
address
counter
bits
fixed
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
JP6207978A
Other languages
Japanese (ja)
Inventor
Keiichi Kato
Tadahiro Wada
Toshiyuki Kasada
Kazuyoshi Wakatsuki
Naoki Koizumi
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
Panafacom Ltd
Original Assignee
Fujitsu Ltd
Panafacom 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, Panafacom Ltd filed Critical Fujitsu Ltd
Priority to JP6207978A priority Critical patent/JPS54152939A/en
Publication of JPS54152939A publication Critical patent/JPS54152939A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To perform instruction control with neither increase in the number of circuits nor waste of time, by the logic state of interruption request signal lines to part of bits of a program counter and by perform a process with the rest set to a fixed value.
CONSTITUTION: The logic state of the n-number interruption request signal lines RQi at the time of interruption is set to fixed bits of program address counter PC by way of switching circuit SW. The remaining bits of counter PC are fixed to a fixed value and therefore when an interruption request is sent to one of signals lines 1 to (n), counter PC is set to an address value equivalent to the interruption request state of them and has a different address. Then, this is used as the head address of an interruption process routine where a branch operation is performed. Consequently, an interruption address circuit attending on an interruption control circuit on an address vector system can be simplified.
COPYRIGHT: (C)1979,JPO&Japio
JP6207978A 1978-05-24 1978-05-24 Microprogram interruption control system Pending JPS54152939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6207978A JPS54152939A (en) 1978-05-24 1978-05-24 Microprogram interruption control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6207978A JPS54152939A (en) 1978-05-24 1978-05-24 Microprogram interruption control system

Publications (1)

Publication Number Publication Date
JPS54152939A true JPS54152939A (en) 1979-12-01

Family

ID=13189694

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6207978A Pending JPS54152939A (en) 1978-05-24 1978-05-24 Microprogram interruption control system

Country Status (1)

Country Link
JP (1) JPS54152939A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5556258A (en) * 1978-10-19 1980-04-24 Toshiba Corp Priority decision system
JPS5797149A (en) * 1980-12-09 1982-06-16 Seiko Epson Corp Interruption processing circuit
JPS6057440A (en) * 1983-09-08 1985-04-03 Nippon Telegr & Teleph Corp <Ntt> Information processor

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5556258A (en) * 1978-10-19 1980-04-24 Toshiba Corp Priority decision system
JPS6148742B2 (en) * 1978-10-19 1986-10-25 Tokyo Shibaura Electric Co
JPS5797149A (en) * 1980-12-09 1982-06-16 Seiko Epson Corp Interruption processing circuit
JPS6057440A (en) * 1983-09-08 1985-04-03 Nippon Telegr & Teleph Corp <Ntt> Information processor
JPH0347536B2 (en) * 1983-09-08 1991-07-19 Nippon Telegraph & Telephone

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