[go: up one dir, main page]

GB2036392A - Computer system having enhancement circuitry for memory accessing - Google Patents

Computer system having enhancement circuitry for memory accessing

Info

Publication number
GB2036392A
GB2036392A GB7940977A GB7940977A GB2036392A GB 2036392 A GB2036392 A GB 2036392A GB 7940977 A GB7940977 A GB 7940977A GB 7940977 A GB7940977 A GB 7940977A GB 2036392 A GB2036392 A GB 2036392A
Authority
GB
United Kingdom
Prior art keywords
enhancement circuitry
memory
computer system
address
data word
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.)
Withdrawn
Application number
GB7940977A
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.)
NCR Voyix Corp
Original Assignee
NCR 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 NCR Corp filed Critical NCR Corp
Publication of GB2036392A publication Critical patent/GB2036392A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F12/00—Accessing, addressing or allocating within memory systems or architectures
    • G06F12/02—Addressing or allocation; Relocation
    • G06F12/04—Addressing variable-length words or parts of words

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Executing Machine-Instructions (AREA)
  • Microcomputers (AREA)

Abstract

A computer system having enhancement circuitry for memory accessing, and has particular application to a system in which the number of bits which can be processed at one time by the processor is less than the number of bits in either a data word stored in the memory or the address associated with it. In a computer system (10) in accordance with the invention, enhancement circuitry (42) is connected between two buses (18, 20) which respectively connect a microprocessor (12) to a main memory (14) and to peripheral subsystems (16). The microprocessor is arranged to fetch a data word in said memory by loading an address in address registers (50, 54, 58, 62, 66) included in said enhancement circuitry (42) and is arranged to store a data word in said memory by loading an address in said address registers and a data word in data registers (52, 56, 60, 64, 68) also included in said enhancement circuitry.
GB7940977A 1978-04-21 1979-04-12 Computer system having enhancement circuitry for memory accessing Withdrawn GB2036392A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US89856478A 1978-04-21 1978-04-21

Publications (1)

Publication Number Publication Date
GB2036392A true GB2036392A (en) 1980-06-25

Family

ID=25409635

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7940977A Withdrawn GB2036392A (en) 1978-04-21 1979-04-12 Computer system having enhancement circuitry for memory accessing

Country Status (5)

Country Link
JP (1) JPS55500197A (en)
DE (1) DE2951405A1 (en)
FR (1) FR2423823A1 (en)
GB (1) GB2036392A (en)
WO (1) WO1979000959A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4371928A (en) * 1980-04-15 1983-02-01 Honeywell Information Systems Inc. Interface for controlling information transfers between main data processing systems units and a central subsystem
FR2486269B1 (en) * 1980-07-04 1986-03-28 Thomson Csf DIGITAL DATA PROCESSING AND STORAGE SYSTEM, PARTICULARLY FOR TOMODENSITOMETER, AND TOMODENSITOMETER COMPRISING SUCH A SYSTEM
DE3587635T2 (en) * 1984-10-04 1994-04-21 Bull Hn Information Syst Disk storage controller with shared address register.

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3550133A (en) * 1964-04-06 1970-12-22 Ibm Automatic channel apparatus
US3573741A (en) * 1968-07-11 1971-04-06 Ibm Control unit for input/output devices
US3587058A (en) * 1969-06-04 1971-06-22 Bell Telephone Labor Inc Data processing system input-output arrangement
US3739352A (en) * 1971-06-28 1973-06-12 Burroughs Corp Variable word width processor control
NL7200354A (en) * 1972-01-11 1973-07-13
US3713107A (en) * 1972-04-03 1973-01-23 Ncr Firmware sort processor system
US3793631A (en) * 1972-09-22 1974-02-19 Westinghouse Electric Corp Digital computer apparatus operative with jump instructions
US3916383A (en) * 1973-02-20 1975-10-28 Memorex Corp Multi-processor data processing system
US3833889A (en) * 1973-03-08 1974-09-03 Control Data Corp Multi-mode data processing system
FR121860A (en) * 1973-07-19
US3943494A (en) * 1974-06-26 1976-03-09 International Business Machines Corporation Distributed execution processor
DE2437252B1 (en) * 1974-08-02 1975-07-10 Ibm Deutschland Gmbh, 7000 Stuttgart Data processing system
US4071890A (en) * 1976-11-29 1978-01-31 Data General Corporation CPU-Synchronous parallel data processor apparatus
US4079455A (en) * 1976-12-13 1978-03-14 Rca Corporation Microprocessor architecture
US4077060A (en) * 1976-12-27 1978-02-28 International Business Machines Corporation Asymmetrical multiprocessor system
US4130868A (en) * 1977-04-12 1978-12-19 International Business Machines Corporation Independently controllable multiple address registers for a data processor

Also Published As

Publication number Publication date
FR2423823A1 (en) 1979-11-16
WO1979000959A1 (en) 1979-11-15
JPS55500197A (en) 1980-04-03
DE2951405A1 (en) 1981-01-15

Similar Documents

Publication Publication Date Title
ES8103868A1 (en) Access system for memory modules.
GB1055704A (en) Improvements relating to electronic data processing systems
GB1343375A (en) Data processing systems
GB1184006A (en) Stored Program Electronic Data Processing System
DE3072001D1 (en) Diagnostic circuitry in a data processor
ES8405175A1 (en) Circuits in the control part of a microprogrammable processor for direct hardware execution of selected instructions.
GB1398182A (en) Storage address translation
GB1332923A (en) Microprogramme store
GB2036392A (en) Computer system having enhancement circuitry for memory accessing
JPS55123739A (en) Memory content prefetch control system
GB1207168A (en) Information processing system
JPH0552539B2 (en)
GB1235927A (en) Data processing system
GB1348171A (en) Status marking of variables
JPS56134383A (en) Data processor
EP0373042A3 (en) Integrated circuit for dynamic programming
JPS5786180A (en) Memory device having address converting mechanism
ES432949A1 (en) Data processing system
JPS55146551A (en) Information processing unit
JPS6428736A (en) Data error processing system for processing unit of common bus system
JPS56145583A (en) Buffer memory device
JPS5734264A (en) Multiprocessor
JPS5621261A (en) Processing system for memory unit read/write
JPS57176588A (en) Electronic computer
GB986929A (en) Improvements in or relating to data processing apparatus

Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)