JPS5723148A - Microprogram control system - Google Patents

Microprogram control system

Info

Publication number
JPS5723148A
JPS5723148A JP9780180A JP9780180A JPS5723148A JP S5723148 A JPS5723148 A JP S5723148A JP 9780180 A JP9780180 A JP 9780180A JP 9780180 A JP9780180 A JP 9780180A JP S5723148 A JPS5723148 A JP S5723148A
Authority
JP
Japan
Prior art keywords
address
interruption
microinstruction address
cause
mask
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
JP9780180A
Other languages
Japanese (ja)
Inventor
Tetsuhiko Ifuku
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 JP9780180A priority Critical patent/JPS5723148A/en
Publication of JPS5723148A publication Critical patent/JPS5723148A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/22—Microcontrol or microprogram arrangements
    • G06F9/226—Microinstruction function, e.g. input/output microinstruction; diagnostic microinstruction; microinstruction format

Abstract

PURPOSE:To improve a processing speed and to increase the degree of freedom of microprogram generation, by modifying a new microinstruction address by modification data and a mask when an interruption to a microprogram is generated. CONSTITUTION:Once an interruption takes place, its cause is set in an interruption cause register 6 and a current instruction address is reserved as an old microinstruction address in an instruction address reserving register 2. Then, the new microinstruction address which corresponds to an interruption level is sent to a multiplexer 5 together with a modifier and a mask. According to the mask information, the multiplexer 5 modifies the new microinstruction address with the modifier. The modified new microinstruction address is set in a microinstruction address counter 1, and processing which corresponds to the cause of the interruption starts at the said address.
JP9780180A 1980-07-16 1980-07-16 Microprogram control system Pending JPS5723148A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9780180A JPS5723148A (en) 1980-07-16 1980-07-16 Microprogram control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9780180A JPS5723148A (en) 1980-07-16 1980-07-16 Microprogram control system

Publications (1)

Publication Number Publication Date
JPS5723148A true JPS5723148A (en) 1982-02-06

Family

ID=14201877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9780180A Pending JPS5723148A (en) 1980-07-16 1980-07-16 Microprogram control system

Country Status (1)

Country Link
JP (1) JPS5723148A (en)

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