JPS57753A - Microprogram controller - Google Patents

Microprogram controller

Info

Publication number
JPS57753A
JPS57753A JP7271580A JP7271580A JPS57753A JP S57753 A JPS57753 A JP S57753A JP 7271580 A JP7271580 A JP 7271580A JP 7271580 A JP7271580 A JP 7271580A JP S57753 A JPS57753 A JP S57753A
Authority
JP
Japan
Prior art keywords
register
microprogram
page
contents
instruction
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
JP7271580A
Other languages
Japanese (ja)
Other versions
JPS6346855B2 (en
Inventor
Akihiro Katsura
Hideo Maejima
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP7271580A priority Critical patent/JPS57753A/en
Priority to GB8116575A priority patent/GB2077010B/en
Priority to DE19813121742 priority patent/DE3121742A1/en
Priority to US06/269,608 priority patent/US4446517A/en
Publication of JPS57753A publication Critical patent/JPS57753A/en
Publication of JPS6346855B2 publication Critical patent/JPS6346855B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To increase a processing speed and to obtain flexible versatility, by setting the contents of an instruction register directly in an address register without through an instruction decoder.
CONSTITUTION: The memory of a microprogram storage device 15 is divided into pages each consisting of ≥2 words, and a page specifying register 51 controllable by a microprogram and an address specifying register 14 in a page into which the contents of an instruction register 11 are fetched directly are used to access the microprogram memory. Thus, an optional page is usable for decoding instructions.
COPYRIGHT: (C)1982,JPO&Japio
JP7271580A 1980-06-02 1980-06-02 Microprogram controller Granted JPS57753A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP7271580A JPS57753A (en) 1980-06-02 1980-06-02 Microprogram controller
GB8116575A GB2077010B (en) 1980-06-02 1981-05-29 Microprogramme control method and apparatus therefor
DE19813121742 DE3121742A1 (en) 1980-06-02 1981-06-01 MICROPROGRAM CONTROL METHOD AND DEVICE FOR IMPLEMENTING IT
US06/269,608 US4446517A (en) 1980-06-02 1981-06-02 Microprogram memory with page addressing and address decode in memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7271580A JPS57753A (en) 1980-06-02 1980-06-02 Microprogram controller

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP20117989A Division JPH02110631A (en) 1989-08-04 1989-08-04 Microprogram controlling method

Publications (2)

Publication Number Publication Date
JPS57753A true JPS57753A (en) 1982-01-05
JPS6346855B2 JPS6346855B2 (en) 1988-09-19

Family

ID=13497318

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7271580A Granted JPS57753A (en) 1980-06-02 1980-06-02 Microprogram controller

Country Status (1)

Country Link
JP (1) JPS57753A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58221444A (en) * 1982-06-18 1983-12-23 Hitachi Ltd Controlling device of microprogram
JPS59136851A (en) * 1982-12-31 1984-08-06 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Data processor
JPS59174947A (en) * 1983-03-25 1984-10-03 Fujitsu Ltd System for controlling order of microprogram
US4653656A (en) * 1984-07-30 1987-03-31 Triplett James T Double center luffing crane

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4951839A (en) * 1972-06-02 1974-05-20
JPS50105345A (en) * 1974-01-28 1975-08-20
US3980992A (en) * 1974-11-26 1976-09-14 Burroughs Corporation Multi-microprocessing unit on a single semiconductor chip

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4951839A (en) * 1972-06-02 1974-05-20
JPS50105345A (en) * 1974-01-28 1975-08-20
US3980992A (en) * 1974-11-26 1976-09-14 Burroughs Corporation Multi-microprocessing unit on a single semiconductor chip

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58221444A (en) * 1982-06-18 1983-12-23 Hitachi Ltd Controlling device of microprogram
JPH0239812B2 (en) * 1982-06-18 1990-09-07 Hitachi Ltd
JPS59136851A (en) * 1982-12-31 1984-08-06 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Data processor
JPS59174947A (en) * 1983-03-25 1984-10-03 Fujitsu Ltd System for controlling order of microprogram
JPH0332814B2 (en) * 1983-03-25 1991-05-14 Fujitsu Ltd
US4653656A (en) * 1984-07-30 1987-03-31 Triplett James T Double center luffing crane

Also Published As

Publication number Publication date
JPS6346855B2 (en) 1988-09-19

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