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JPS5484943A - Cpu for executing variable length command - Google Patents

Cpu for executing variable length command

Info

Publication number
JPS5484943A
JPS5484943A JP13209978A JP13209978A JPS5484943A JP S5484943 A JPS5484943 A JP S5484943A JP 13209978 A JP13209978 A JP 13209978A JP 13209978 A JP13209978 A JP 13209978A JP S5484943 A JPS5484943 A JP S5484943A
Authority
JP
Japan
Prior art keywords
cpu
variable length
executing variable
length command
command
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
JP13209978A
Other languages
Japanese (ja)
Other versions
JPS5931733B2 (en
Inventor
Dei Sutoretsuka Uiriamu
Enu Hasuchingusu Toomasu
Efu Rarii Richiyaado
Pii Rojiyaazu Deibuitsuto
Eichi Rosuman Suchiibun
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.)
Digital Equipment Corp
Original Assignee
Digital Equipment Corp
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 Digital Equipment Corp filed Critical Digital Equipment Corp
Publication of JPS5484943A publication Critical patent/JPS5484943A/en
Publication of JPS5931733B2 publication Critical patent/JPS5931733B2/en
Expired 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
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/34—Addressing or accessing the instruction operand or the result ; Formation of operand address; Addressing modes
    • G06F9/355—Indexed addressing
    • 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
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
    • G06F9/3016—Decoding the operand specifier, e.g. specifier format
    • 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
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
    • G06F9/3016—Decoding the operand specifier, e.g. specifier format
    • G06F9/30167—Decoding the operand specifier, e.g. specifier format of immediate specifier, e.g. constants
    • 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
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
    • G06F9/3802—Instruction prefetching
    • 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
    • G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
    • G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
    • G06F9/3818—Decoding for concurrent execution
    • G06F9/3822—Parallel decoding, e.g. parallel decode units

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Executing Machine-Instructions (AREA)
  • Advance Control (AREA)
JP53132099A 1977-10-25 1978-10-25 central processing unit that executes variable length instructions Expired JPS5931733B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US84505577A 1977-10-25 1977-10-25
US000000845055 1977-10-25

Publications (2)

Publication Number Publication Date
JPS5484943A true JPS5484943A (en) 1979-07-06
JPS5931733B2 JPS5931733B2 (en) 1984-08-03

Family

ID=25294286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53132099A Expired JPS5931733B2 (en) 1977-10-25 1978-10-25 central processing unit that executes variable length instructions

Country Status (9)

Country Link
JP (1) JPS5931733B2 (en)
AU (1) AU518656B2 (en)
BR (1) BR7807060A (en)
CA (1) CA1114515A (en)
DE (1) DE2846520A1 (en)
ES (1) ES474427A1 (en)
FR (1) FR2407519B1 (en)
GB (1) GB2007887B (en)
IN (1) IN150275B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56127251A (en) * 1980-02-07 1981-10-05 Intel Corp Microprocessor instructing device
JPS58161042A (en) * 1981-12-01 1983-09-24 ハネウエル・インフオメ−シヨン・システムズ・インコ−ポレ−テツド Data processing system
JPS6446135A (en) * 1983-10-03 1989-02-20 Digital Equipment Corp Central processor for digital computer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5761491A (en) * 1996-04-15 1998-06-02 Motorola Inc. Data processing system and method for storing and restoring a stack pointer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5145946A (en) * 1974-10-17 1976-04-19 Fujitsu Ltd DEETASHORISHI SUTEMU
JPS5282149A (en) * 1975-12-29 1977-07-09 Fujitsu Ltd Instruction address control system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573851A (en) * 1968-07-11 1971-04-06 Texas Instruments Inc Memory buffer for vector streaming
US3577189A (en) * 1969-01-15 1971-05-04 Ibm Apparatus and method in a digital computer for allowing improved program branching with branch anticipation reduction of the number of branches, and reduction of branch delays
US3614740A (en) * 1970-03-23 1971-10-19 Digital Equipment Corp Data processing system with circuits for transferring between operating routines, interruption routines and subroutines
US3614741A (en) * 1970-03-23 1971-10-19 Digital Equipment Corp Data processing system with instruction addresses identifying one of a plurality of registers including the program counter
US3710324A (en) * 1970-04-01 1973-01-09 Digital Equipment Corp Data processing system
US3999163A (en) * 1974-01-10 1976-12-21 Digital Equipment Corporation Secondary storage facility for data processing systems
DE2419837B2 (en) * 1974-04-24 1976-12-02 Nixdorf Computer Ag, 4790 Paderborn CIRCUIT ARRANGEMENT FOR ADDRESSING A MICROPROGRAM IN DATA PROCESSING DEVICES AND METHODS FOR EXECUTING JUMP COMMANDS

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5145946A (en) * 1974-10-17 1976-04-19 Fujitsu Ltd DEETASHORISHI SUTEMU
JPS5282149A (en) * 1975-12-29 1977-07-09 Fujitsu Ltd Instruction address control system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56127251A (en) * 1980-02-07 1981-10-05 Intel Corp Microprocessor instructing device
JPH026090B2 (en) * 1980-02-07 1990-02-07 Intel Corp
JPS58161042A (en) * 1981-12-01 1983-09-24 ハネウエル・インフオメ−シヨン・システムズ・インコ−ポレ−テツド Data processing system
JPH059816B2 (en) * 1981-12-01 1993-02-08 Haneiueru Infuoomeishon Shisutemusu Inc
JPS6446135A (en) * 1983-10-03 1989-02-20 Digital Equipment Corp Central processor for digital computer
JPH0210452B2 (en) * 1983-10-03 1990-03-08 Digital Equipment Corp

Also Published As

Publication number Publication date
DE2846520C2 (en) 1991-10-24
BR7807060A (en) 1979-07-17
FR2407519B1 (en) 1987-08-28
CA1114515A (en) 1981-12-15
FR2407519A1 (en) 1979-05-25
JPS5931733B2 (en) 1984-08-03
IN150275B (en) 1982-08-28
AU518656B2 (en) 1981-10-15
GB2007887A (en) 1979-05-23
ES474427A1 (en) 1979-04-16
DE2846520A1 (en) 1979-04-26
GB2007887B (en) 1982-07-28
AU4104578A (en) 1980-05-01

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