JPS5657144A - Microprogram control device - Google Patents

Microprogram control device

Info

Publication number
JPS5657144A
JPS5657144A JP13312879A JP13312879A JPS5657144A JP S5657144 A JPS5657144 A JP S5657144A JP 13312879 A JP13312879 A JP 13312879A JP 13312879 A JP13312879 A JP 13312879A JP S5657144 A JPS5657144 A JP S5657144A
Authority
JP
Japan
Prior art keywords
control information
information
stored
control device
correction
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
JP13312879A
Other languages
Japanese (ja)
Inventor
Kiyoshi Sakai
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 JP13312879A priority Critical patent/JPS5657144A/en
Publication of JPS5657144A publication Critical patent/JPS5657144A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to correct control information without the switching time of a memory, by operating exclusive OR between control information read from two ROMs and correction information to obtain correction control information.
CONSTITUTION: Address are given to ROM 1, where control information is stored, and ROM 2, where control information corresponding to control information above is stored, from address register 4 through bus 3. Output information of ROMs 1 and 2 are given to correcting circuit 7 and are subjected to exclusive OR operation to obtain correction information. Obtained correction information is stored in control register 9. As the result, control information can be corrected without the switching time of the memory with the simple circuit.
COPYRIGHT: (C)1981,JPO&Japio
JP13312879A 1979-10-16 1979-10-16 Microprogram control device Pending JPS5657144A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13312879A JPS5657144A (en) 1979-10-16 1979-10-16 Microprogram control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13312879A JPS5657144A (en) 1979-10-16 1979-10-16 Microprogram control device

Publications (1)

Publication Number Publication Date
JPS5657144A true JPS5657144A (en) 1981-05-19

Family

ID=15097432

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13312879A Pending JPS5657144A (en) 1979-10-16 1979-10-16 Microprogram control device

Country Status (1)

Country Link
JP (1) JPS5657144A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60138656A (en) * 1983-12-27 1985-07-23 Mitsubishi Electric Corp Code converting system of memory device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60138656A (en) * 1983-12-27 1985-07-23 Mitsubishi Electric Corp Code converting system of memory device

Similar Documents

Publication Publication Date Title
JPS5693159A (en) Error correcting system for advance data
JPS55110324A (en) Unit control circuit
JPS52125242A (en) Multiple control memory unit
JPS5394849A (en) Control unit for interruption process
JPS5493923A (en) Character pattern generator
JPS5690349A (en) Error correction code circuit
JPS5533284A (en) Print control system
JPS51147240A (en) Shaping circuit of wave-form
JPS5390838A (en) Microprogram memory unit
JPS5216651A (en) Correction circuit for input voltage
JPS5217732A (en) Integrated circuit unit
JPS5545169A (en) Memory unit
JPS54136243A (en) Address conversion circuit
JPS5642857A (en) Address control device
JPS554686A (en) Microprogram control unit
JPS53118949A (en) Correcting system for microprogram
JPS52120633A (en) Error correction logic system
JPS5332632A (en) Memory control unit
JPS52127575A (en) Asynchronous sequence circuit
JPS5599652A (en) Microprogram control unit
JPS5515526A (en) Microprogram control circuit
JPS54130842A (en) Method address generator
JPS5647999A (en) Initializing method of memory
JPS5724099A (en) Clock control system
JPS5429524A (en) Correction circuit for mark position detection