Difference between revisions of "IMP interface"

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A device attached to an [[ARPANET]] host to communicate with an [[Interface Message Processor|IMP]].  The communication interface, the [[Host-to-IMP Protocol]], is specified in BBN Report 1822.
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An '''IMP interface''' is a [[device controller]] used on a [[host]] (i.e. on its [[bus]]) to attach them to systems which used the special [[1822 interface|1822 communication interface]] (defined in [[Bolt, Beranek, and Newman|BBN]] Report No. 1822); these included initially the [[Interface Message Processor|IMPs]] of the [[ARPANET]] (hence the name), and later the PRUs of the [[Packet Radio Network‎]].  
  
List of interfaces:
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Some of the most popular IMP interfaces were:
  
* BBN IMP-10, used by [[TENEX]].
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* BBN IMP-10, used by [[TENEX]]
* MIT DM IMP, used by [[Incompatible Timesharing System|MIT-DMS]]. Made by Bob Metcalfe.
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* MIT DM IMP, used by [[Incompatible Timesharing System|MIT-DM]]. Made by Bob Metcalfe
* MIT KA IMP, used by [[Incompatible Timesharing System|MIT-AI, ML, and MC]].
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* MIT KA IMP, used by [[Incompatible Timesharing System|MIT-AI, -ML, and -MC]]
* ACC LH/DH, [[UNIBUS]].
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* [[Digital Equipment Corporation|DEC]] AN-10, for the [[PDP-10 I/O Bus]]  
* [[DEC]] CSS IMP11-A, UNIBUS.
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* DEC CSS [[IMP11-A ARPANET interface|IMP11-A]], [[UNIBUS]]
* SRI, UNIBUS (via a [[DR11-C parallel interface|DR11-C]]) and [[QBUS]] (via a [[DRV11 parallel interface|DRV11]])  
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* DEC CSS [[IMP11-B ARPANET Interface|IMP11-B]], UNIBUS
* GIMPSPIF, used by 645 [[Multics]].
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* [[ANTS/ISI IMP Interface]], UNIBUS
* ABSI, used by 6180 Multics.
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* [[Stanford 1822 Interface]], UNIBUS (via a [[DR11-C parallel interface|DR11-C]]) and [[QBUS]] (via a [[DRV11 Parallel Line Unit|DRV11]])
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* [[Advanced Computer Communications|ACC]] [[LH-DH/11 Local/Distant Host Controller|LH-DH/11]], UNIBUS
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* ACC [[MLH-DH/LSI11 Multiple Channel Controller|MLH-DH/LSI11]], QBUS
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* GIMPSPIF, used by 645 [[Multics]]
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* ABSI, used by [[Honeywell 6000 series|6180]] Multics, for NCP and [[Internet Protocol|IP]]
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* [[Alto-1822 Interface]] for the [[Xerox Alto|Alto]], used in a variety of ways
  
{{stub}}
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but there were many others (many being 'one-off' local creations).
  
[[Category: Network Interfaces]]
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{{semi-stub}}
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==External links==
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* [http://www.bitsavers.org/pdf/bbn/imp/BBN1822_Jan1976.pdf Specification for the Interconnection of a Host and an IMP] - BBN Report #1822
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* [http://www.bitsavers.org/pdf/bbn/imp/IMP-10_Special_Interface_Manual_Oct73.pdf Manual for the IMP-10 Special Interface]
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[[Category: 1822 Interfaces‎]]

Latest revision as of 19:39, 17 December 2023

An IMP interface is a device controller used on a host (i.e. on its bus) to attach them to systems which used the special 1822 communication interface (defined in BBN Report No. 1822); these included initially the IMPs of the ARPANET (hence the name), and later the PRUs of the Packet Radio Network‎.

Some of the most popular IMP interfaces were:

but there were many others (many being 'one-off' local creations).

External links