[go: up one dir, main page]

JPS55123737A - Microprogram address control system - Google Patents

Microprogram address control system

Info

Publication number
JPS55123737A
JPS55123737A JP3004279A JP3004279A JPS55123737A JP S55123737 A JPS55123737 A JP S55123737A JP 3004279 A JP3004279 A JP 3004279A JP 3004279 A JP3004279 A JP 3004279A JP S55123737 A JPS55123737 A JP S55123737A
Authority
JP
Japan
Prior art keywords
unit
address
instruction
microprogram
memory unit
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
JP3004279A
Other languages
Japanese (ja)
Inventor
Makoto Tazaki
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 JP3004279A priority Critical patent/JPS55123737A/en
Publication of JPS55123737A publication Critical patent/JPS55123737A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce the capacity of a control memory unit by making it possible that an address table memory unit is accessed with plural addresses by a micro instruction in one machine instruction.
CONSTITUTION: In the microprogram address control system where the address of a microprogram corresponding to a machine instruction is generated, control memory unit 2 stores the microprogram, and the micro instruction read from unit 2 is stored in moicro instruction register 7. Here, address selection unit 6 receives the output of address table memory unit 1 and outputs an address to access unit 2. Then, it is made possible that unit 1 is accessed with plural addresses by the micro instruction in the execution time of one machine instruction stored in register 4. Thus, plural addresses can be selected by one machine instruction, so that the capacity of unit 2 can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP3004279A 1979-03-16 1979-03-16 Microprogram address control system Pending JPS55123737A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3004279A JPS55123737A (en) 1979-03-16 1979-03-16 Microprogram address control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3004279A JPS55123737A (en) 1979-03-16 1979-03-16 Microprogram address control system

Publications (1)

Publication Number Publication Date
JPS55123737A true JPS55123737A (en) 1980-09-24

Family

ID=12292757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3004279A Pending JPS55123737A (en) 1979-03-16 1979-03-16 Microprogram address control system

Country Status (1)

Country Link
JP (1) JPS55123737A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57178552A (en) * 1981-04-13 1982-11-02 Texas Instruments Inc Microprocessor device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57178552A (en) * 1981-04-13 1982-11-02 Texas Instruments Inc Microprocessor device

Similar Documents

Publication Publication Date Title
JPS5616243A (en) Microaddress production system
JPS55124830A (en) Input and output control system
JPS55119747A (en) Microprogram control unit
JPS55123737A (en) Microprogram address control system
JPS5464277A (en) Sequence controller
JPS55134467A (en) Magnetic disc device
JPS5474337A (en) Microprogram controller
JPS5578365A (en) Memory control unit
JPS57101945A (en) Control system of information processor
JPS55134450A (en) Microprogram control unit
JPS5599652A (en) Microprogram control unit
JPS55103648A (en) Information processing unit
JPS5528101A (en) Constitution control system of main memory
JPS5578345A (en) Microprogram control unit
JPS55162152A (en) Microprogram controller
JPS553038A (en) Microprogram control unit
JPS5617402A (en) Programmable sequence controller
JPS5696336A (en) Processing system for multilayer level microprogram
JPS54153542A (en) Data processor of microprogram control type
JPS5523588A (en) Micro program control unit
JPS55159226A (en) Data input and output unit
JPS5481053A (en) Microprogram control system
JPS55119745A (en) Information processing unit
JPS564842A (en) Microprogram control unit
JPS5671140A (en) Microprogram control device