GB1287657A - Apparatus for signalling peripheral unit configuration within computer system - Google Patents

Apparatus for signalling peripheral unit configuration within computer system

Info

Publication number
GB1287657A
GB1287657A GB1558570A GB1558570A GB1287657A GB 1287657 A GB1287657 A GB 1287657A GB 1558570 A GB1558570 A GB 1558570A GB 1558570 A GB1558570 A GB 1558570A GB 1287657 A GB1287657 A GB 1287657A
Authority
GB
United Kingdom
Prior art keywords
output
peripheral
signals
decoder
peripheral unit
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.)
Expired
Application number
GB1558570A
Inventor
William Chandler Price
Erwin Arthur Hauck
Jacob Francis Vigil
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.)
Unisys Corp
Original Assignee
Burroughs 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 Burroughs Corp filed Critical Burroughs Corp
Publication of GB1287657A publication Critical patent/GB1287657A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00Digital computers in general; Data processing equipment in general
    • G06F15/16Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
    • G06F15/177Initialisation or configuration control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer And Data Communications (AREA)
  • Communication Control (AREA)

Abstract

1287657 Data processing systems BURROUGHS CORP 2 April 1970 [9 July 1969] 15585/70 Heading G4A A data processing system has a high speed memory, a number of data storing peripheral units of different types, and an apparatus for providing information to the processor as to the types of peripheral unit connected in the system and whether a communication path is available to a particular unit, the apparatus including a gating circuit operative to energize one or more of a number of output lines each corresponding to a particular peripheral unit, and a comparator responsive to the presence of output signals from the gating circuit and NOT BUSY signals from corresponding peripheral unit control units to produce a signal which is passed to the processor. As described the peripherals may be magnetic tape units, printers &c. and three modes of operation are described. Interrogate peripheral unit type.-A word is placed in the A register 24 which is the top register in a stack memory. A group of bits identifying the word as an "interrogate peripheral unit type" command are decoded and used to gate via gate 26 a further group of bits in the word specifying a particular multiplexor and a channel number to the control lines of the scanbus. These bits are applied to a decoder 28 and via a gate 32 to the gating circuit 34. The gate 32 is enabled by the TYPE output of the decoder and the circuit 34 energizes one or more of its outputs 1-20 in response to the channel designation. The lines 1-20 are connected to respective printed circuit boards 36-40 which generate a coded output specifying the type of peripheral connected to the designated channel. Interrogate peripheral path.-This command verifies the availability of a designated channel. A word is loaded in the A register 24 as above and the operation is similar except that the PATH output of decoder 28 is energized. The outputs 1-20 of the gating circuit 34 pass via AND gates 42-46 respectively which are enabled by the PATH output and also by NOT BUSY signals from the control units associated with the peripherals connected to channels 1-20. The outputs of gates 42-46 are gated to the processor via gate 48. Interrogate status.-This command verifies the availability of the selected peripheral unit, the STATUS output of the decoder 28 being energized as above. A group of bits specifying one of the groups of READY lines from the peripheral units is passed to the decoder 56 which is activated in response to the STATUS output. The READY signals verify the status of the peripheral units and are utilized by the decoder 56 to generate control signals which are applied to the corresponding ones of the gates 50, 52, 54. The selected READY signals are thus gated to the processor. The system may provide for avoiding interrogation of all the READY signals by passing each group of such signals through a corresponding inverter 58, 60, 62 to the gating circuit associated with the next lower order group of READY signals. The output of the inverters indicate that none of the peripheral units is ready and a particular bit in the A-register 24 is set accordingly. The controlling program in response to setting of this bit, inhibits further interrogation.
GB1558570A 1969-07-09 1970-04-02 Apparatus for signalling peripheral unit configuration within computer system Expired GB1287657A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84039369A 1969-07-09 1969-07-09

Publications (1)

Publication Number Publication Date
GB1287657A true GB1287657A (en) 1972-09-06

Family

ID=25282255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1558570A Expired GB1287657A (en) 1969-07-09 1970-04-02 Apparatus for signalling peripheral unit configuration within computer system

Country Status (5)

Country Link
JP (1) JPS511378B1 (en)
BE (1) BE753180A (en)
DE (1) DE2025672C3 (en)
FR (1) FR2051637B1 (en)
GB (1) GB1287657A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138980A (en) * 1983-04-04 1984-10-31 Mitsubishi Electric Corp Recording medium read/write control system
GB2235995A (en) * 1989-09-11 1991-03-20 Sun Microsystems Inc Apparatus for read handshake in high-speed asynchronous bus interface

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2853147C2 (en) * 1978-12-08 1990-02-15 Siemens AG, 1000 Berlin und 8000 München Data input and output arrangement
DE3112693A1 (en) * 1981-03-31 1982-10-14 Stollmann & Co, 2000 Hamburg MODULAR DECENTRALIZED DATA PROCESSING SYSTEM

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138980A (en) * 1983-04-04 1984-10-31 Mitsubishi Electric Corp Recording medium read/write control system
GB2235995A (en) * 1989-09-11 1991-03-20 Sun Microsystems Inc Apparatus for read handshake in high-speed asynchronous bus interface
US5079696A (en) * 1989-09-11 1992-01-07 Sun Microsystems, Inc. Apparatus for read handshake in high-speed asynchronous bus interface
GB2235995B (en) * 1989-09-11 1993-07-28 Sun Microsystems Inc Apparatus for read handshake in high-speed asynchronous bus interface

Also Published As

Publication number Publication date
JPS511378B1 (en) 1976-01-16
DE2025672A1 (en) 1971-01-14
FR2051637A1 (en) 1971-04-09
BE753180A (en) 1970-12-16
DE2025672B2 (en) 1973-12-13
DE2025672C3 (en) 1979-06-21
FR2051637B1 (en) 1973-04-27

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Legal Events

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