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GB2010553A - Data Processing Apparatus - Google Patents

Data Processing Apparatus

Info

Publication number
GB2010553A
GB2010553A GB7845546A GB7845546A GB2010553A GB 2010553 A GB2010553 A GB 2010553A GB 7845546 A GB7845546 A GB 7845546A GB 7845546 A GB7845546 A GB 7845546A GB 2010553 A GB2010553 A GB 2010553A
Authority
GB
United Kingdom
Prior art keywords
processor
lines
signals
channel
data processing
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
GB7845546A
Other versions
GB2010553B (en
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB2010553A publication Critical patent/GB2010553A/en
Application granted granted Critical
Publication of GB2010553B publication Critical patent/GB2010553B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/4401—Bootstrapping
    • G06F9/4403—Processor initialisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Software Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)
  • Hardware Redundancy (AREA)
  • Retry When Errors Occur (AREA)
  • Selective Calling Equipment (AREA)

Abstract

The present invention relates to data processing apparatus having an auxiliary processor to execute selective system reset functions in order to overcome the problems of executing system reset via the normal data processing linkages when defective units occur in the linkages or when units are reserved. Both simplex and multiplex processor systems are considered, but the significant embodiment comprises one control processor 80, one attached auxiliary processor 82, one attached channel 84 and the OPOUT and SUPPOUT lines 86 and 87 to a peripheral unit. The auxiliary processor connects to the channel via path 83 and to the OPOUT and SUPPOUT lines via path 85. When a reset instruction is decoded in processor 80, the decoder signals processor 82 which applies I/O RESET signals to the channel and INHIBIT signals to line 85. The inhibit signals suppress lines 86 and 87 for a time period sufficient to indicate system reset to an attached peripheral unit. With multiple channels and hence multiple lines 83 and 85, processor 82 includes a line selection decode (104) responsive to instruction based target data and latches (120) indicating the availability of the target. <IMAGE>
GB7845546A 1977-12-15 1978-11-22 Data processing apparatus Expired GB2010553B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86081377A 1977-12-15 1977-12-15

Publications (2)

Publication Number Publication Date
GB2010553A true GB2010553A (en) 1979-06-27
GB2010553B GB2010553B (en) 1982-01-13

Family

ID=25334081

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7845546A Expired GB2010553B (en) 1977-12-15 1978-11-22 Data processing apparatus

Country Status (5)

Country Link
JP (1) JPS584365B2 (en)
DE (1) DE2850416A1 (en)
FR (1) FR2412121B1 (en)
GB (1) GB2010553B (en)
IT (1) IT1160296B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS593607A (en) * 1982-06-30 1984-01-10 Fujitsu Ltd Error processing system of channel
JPH0187445U (en) * 1987-11-28 1989-06-09

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5237738A (en) * 1975-09-20 1977-03-23 Hitachi Ltd Information processing system
JPS52123141A (en) * 1976-04-08 1977-10-17 Fujitsu Ltd Device control system

Also Published As

Publication number Publication date
FR2412121B1 (en) 1986-03-14
GB2010553B (en) 1982-01-13
FR2412121A1 (en) 1979-07-13
JPS584365B2 (en) 1983-01-26
JPS5484445A (en) 1979-07-05
IT7830415A0 (en) 1978-12-01
DE2850416A1 (en) 1979-06-21
IT1160296B (en) 1987-03-11

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee