JPS5556254A - Arithmetic controller - Google Patents

Arithmetic controller

Info

Publication number
JPS5556254A
JPS5556254A JP12861978A JP12861978A JPS5556254A JP S5556254 A JPS5556254 A JP S5556254A JP 12861978 A JP12861978 A JP 12861978A JP 12861978 A JP12861978 A JP 12861978A JP S5556254 A JPS5556254 A JP S5556254A
Authority
JP
Japan
Prior art keywords
arithmetic
register
stored
micro
address
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
JP12861978A
Other languages
Japanese (ja)
Inventor
Yutaka Nakajima
Tsutomu Sakamoto
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP12861978A priority Critical patent/JPS5556254A/en
Publication of JPS5556254A publication Critical patent/JPS5556254A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplify comtrol of arithmetic excution with good efficiency by providing an arithmetic controller with micro-ROM stored with a microprogram and naro- ROM stored with a nono-program supporting functions of the microprogram.
CONSTITUTION: Control memory controller 300 and arithmetic control part 400 of an arithmetic controller are connected together through buses ABUS to CBUS; while microinstructions read out from a main memory unit are stored in register 310, codes of microinstructions among them are registered from register 320 in micro- ROM address register 360 to read micro-ROM370 corresponding to the address, which is stored in register 380. When its contents are an arithmetic code, access from bus CBUS as an address of nano-ROM410 of arithmetic control part 400 is attained to register a nano-instruction in register 420 and it is decoded by decoder 430 for arithmetic of data on buses ABUS and BBUS.
COPYRIGHT: (C)1980,JPO&Japio
JP12861978A 1978-10-20 1978-10-20 Arithmetic controller Pending JPS5556254A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12861978A JPS5556254A (en) 1978-10-20 1978-10-20 Arithmetic controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12861978A JPS5556254A (en) 1978-10-20 1978-10-20 Arithmetic controller

Publications (1)

Publication Number Publication Date
JPS5556254A true JPS5556254A (en) 1980-04-24

Family

ID=14989258

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12861978A Pending JPS5556254A (en) 1978-10-20 1978-10-20 Arithmetic controller

Country Status (1)

Country Link
JP (1) JPS5556254A (en)

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