JPS5455336A - Data processor controlled by microprogram - Google Patents

Data processor controlled by microprogram

Info

Publication number
JPS5455336A
JPS5455336A JP12214577A JP12214577A JPS5455336A JP S5455336 A JPS5455336 A JP S5455336A JP 12214577 A JP12214577 A JP 12214577A JP 12214577 A JP12214577 A JP 12214577A JP S5455336 A JPS5455336 A JP S5455336A
Authority
JP
Japan
Prior art keywords
micro
arithmetic
instruction
instruction word
memory elements
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
JP12214577A
Other languages
Japanese (ja)
Other versions
JPS6049937B2 (en
Inventor
Hajime Takagi
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 JP52122145A priority Critical patent/JPS6049937B2/en
Publication of JPS5455336A publication Critical patent/JPS5455336A/en
Publication of JPS6049937B2 publication Critical patent/JPS6049937B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Executing Machine-Instructions (AREA)

Abstract

PURPOSE: To prevent performance from deteriorating by eliminating the limit as to instruction words by using output signals from an arithmetic circuit and signals indicating the kind of arithmetic as the address input signals of a memory element by expanding hardware at its minimum.
CONSTITUTION: In the data processor controlled by microprograms, the arithmetic assigned by a micro-instruction word is performed by arithmetic unit 14, and this processor is provided with decoder 15 composed of memory elements supplied with several status signals and a signal indicating the kind of the arithmetic outputted from arithmetic unit 14, and micro-instruction control part 13 which reads out information from the memory elements. In addition, micro-instruction word control memory part 12 is provided which inputs the information outputted from the memory elements to one part of micro-instruction register 27 through the assignment of the instruction word. Next, control part 13 controls arithmetic unit 14 to check B- operand register 21, and the address qualification of the micro-instruction word and the setting of a fast condition code are set to condition code register 26
COPYRIGHT: (C)1979,JPO&Japio
JP52122145A 1977-10-12 1977-10-12 Microprogram controlled data processing device Expired JPS6049937B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52122145A JPS6049937B2 (en) 1977-10-12 1977-10-12 Microprogram controlled data processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52122145A JPS6049937B2 (en) 1977-10-12 1977-10-12 Microprogram controlled data processing device

Publications (2)

Publication Number Publication Date
JPS5455336A true JPS5455336A (en) 1979-05-02
JPS6049937B2 JPS6049937B2 (en) 1985-11-06

Family

ID=14828714

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52122145A Expired JPS6049937B2 (en) 1977-10-12 1977-10-12 Microprogram controlled data processing device

Country Status (1)

Country Link
JP (1) JPS6049937B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5783851A (en) * 1980-11-14 1982-05-25 Hitachi Ltd Condition code generating system
JPS5851352A (en) * 1981-09-24 1983-03-26 Hitachi Ltd Data processor
JPS58217045A (en) * 1982-06-11 1983-12-16 Nec Corp Code digit converting circuit
JPS5938853A (en) * 1982-08-27 1984-03-02 Nec Corp Information processing device
JPH0789314B2 (en) * 1984-01-03 1995-09-27 モトローラ・インコーポレーテッド Floating point condition code generation method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5783851A (en) * 1980-11-14 1982-05-25 Hitachi Ltd Condition code generating system
JPS5851352A (en) * 1981-09-24 1983-03-26 Hitachi Ltd Data processor
JPS58217045A (en) * 1982-06-11 1983-12-16 Nec Corp Code digit converting circuit
JPS5938853A (en) * 1982-08-27 1984-03-02 Nec Corp Information processing device
JPH0128965B2 (en) * 1982-08-27 1989-06-07 Nippon Electric Co
JPH0789314B2 (en) * 1984-01-03 1995-09-27 モトローラ・インコーポレーテッド Floating point condition code generation method

Also Published As

Publication number Publication date
JPS6049937B2 (en) 1985-11-06

Similar Documents

Publication Publication Date Title
JPS5394739A (en) Computer of micro program control system
JPS5455336A (en) Data processor controlled by microprogram
JPS52119832A (en) Electroinc calculator of microprogram control system
JPS55124806A (en) Sequencing circuit of microcomputer
JPS5474338A (en) Information processor
JPS5614353A (en) Control clock switching system
JPS57105038A (en) Operand processing method of ss-type instruction
SU645453A1 (en) Multiprogramme control device
JPS5614357A (en) Diagnostic control unit
JPS573151A (en) Test system for 1-chip microcomputer
JPS5455337A (en) Logical operation processing circuit
JPS5585965A (en) Microprogram branch system
JPS5642858A (en) Microprogram control system
JPS55103649A (en) Information processing unit
JPS55135945A (en) Control memory unit
JPS54114945A (en) Information processing system
JPS5549753A (en) Microprogram control unit
JPS5481053A (en) Microprogram control system
JPS55134450A (en) Microprogram control unit
JPS5515526A (en) Microprogram control circuit
JPS57197653A (en) Control device of microprogram
JPS5510660A (en) Data processor
JPS5638641A (en) Microprogram control system
JPS5696336A (en) Processing system for multilayer level microprogram
JPS55134449A (en) Microprogram control unit