JPS6421540A - Lsi control circuit - Google Patents

Lsi control circuit

Info

Publication number
JPS6421540A
JPS6421540A JP17768087A JP17768087A JPS6421540A JP S6421540 A JPS6421540 A JP S6421540A JP 17768087 A JP17768087 A JP 17768087A JP 17768087 A JP17768087 A JP 17768087A JP S6421540 A JPS6421540 A JP S6421540A
Authority
JP
Japan
Prior art keywords
control
code
register
address
contents
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
JP17768087A
Other languages
Japanese (ja)
Inventor
Mitsuru Tokunaga
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
Original Assignee
Fujitsu 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 filed Critical Fujitsu Ltd
Priority to JP17768087A priority Critical patent/JPS6421540A/en
Publication of JPS6421540A publication Critical patent/JPS6421540A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To specify one of plural control registers by one access from a CPU and to accurately execute the setting and reading of a control code by simultaneously execute the setting and reading of a control code y simultaneously executing the selection of a control register in an LSI and the setting of the control code. CONSTITUTION:An address outputted from a CPU 1 is converted into an address for selecting a specific control register and a control register selecting code by a register selecting part 4 and a data control part 5 and the converted contents are applied to an LSI 3. On the other hand, control data are inputted to a data control part 5, outputted as a control code and applied to the LSI 13 and the control code is written in a control register specified by the address. In case of reading out the contents of the control register 2, the contents of the control register 2 specified by the address and the control register selecting code outputted from the register selecting part 4 and the data control part 5 are read out. Consequently, a control code can be written in the objective control register 2 and its contents can be read out only by one access and processing can be speeded up.
JP17768087A 1987-07-15 1987-07-15 Lsi control circuit Pending JPS6421540A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17768087A JPS6421540A (en) 1987-07-15 1987-07-15 Lsi control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17768087A JPS6421540A (en) 1987-07-15 1987-07-15 Lsi control circuit

Publications (1)

Publication Number Publication Date
JPS6421540A true JPS6421540A (en) 1989-01-24

Family

ID=16035227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17768087A Pending JPS6421540A (en) 1987-07-15 1987-07-15 Lsi control circuit

Country Status (1)

Country Link
JP (1) JPS6421540A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6198446A (en) * 1984-10-19 1986-05-16 Fujitsu Ltd Control register

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6198446A (en) * 1984-10-19 1986-05-16 Fujitsu Ltd Control register

Similar Documents

Publication Publication Date Title
SE7509282L (en) ELECTRONIC COMPUTER.
JPS6421540A (en) Lsi control circuit
JPS5781675A (en) Electronic tabulating computer
JPS5731049A (en) Information processing equipment
JPS5748137A (en) Data processor
JPS54148439A (en) Information memory unit
JPS57174750A (en) Data processor
JPS54158831A (en) Data processor
JPS5532155A (en) Data processor
JPS5696336A (en) Processing system for multilayer level microprogram
JPS55122216A (en) Magnetic card read/write control unit
JPS5543680A (en) Address designation system
JPS5717073A (en) Picture data processing system
JPS6436349A (en) Address developing circuit
JPS5730041A (en) Control system for local memory
JPS54122039A (en) Electronic computer
JPS5614351A (en) Data processing system
JPS5727347A (en) Performance measuring system for data processing system
JPS569826A (en) Channel controller
JPS57132229A (en) Direct memory access controller
JPS5781676A (en) Electronic tabulating computer
JPS5697164A (en) Test and set and test and reset system
JPS55103649A (en) Information processing unit
JPS6472236A (en) Information processor with string operating instruction
JPS5699545A (en) Microprogram control electronic computer