Difference between revisions of "IMP interface"

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(Use in PRUs, Alto 1822 interface)
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An '''IMP interface''' is a [[peripheral|device]] used to attach [[host]]s 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]], and later the PRUs of the [[Packet Radio Network‎]].  
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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 some of the most popular interfaces:
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Some of the most popular IMP interfaces were:
  
 
* BBN IMP-10, used by [[TENEX]]
 
* BBN IMP-10, used by [[TENEX]]
 
* MIT DM IMP, used by [[Incompatible Timesharing System|MIT-DM]]. Made by Bob Metcalfe
 
* 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]]
 
* MIT KA IMP, used by [[Incompatible Timesharing System|MIT-AI, -ML, and -MC]]
* [[Digital Equipment Corporation|DEC]] AN-10
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* [[Digital Equipment Corporation|DEC]] AN-10, for the [[PDP-10 I/O Bus]]
 
* DEC CSS [[IMP11-A ARPANET interface|IMP11-A]], [[UNIBUS]]
 
* DEC CSS [[IMP11-A ARPANET interface|IMP11-A]], [[UNIBUS]]
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* DEC CSS [[IMP11-B ARPANET Interface|IMP11-B]], UNIBUS
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* [[ANTS/ISI IMP Interface]], UNIBUS
 
* [[Stanford 1822 Interface]], UNIBUS (via a [[DR11-C parallel interface|DR11-C]]) and [[QBUS]] (via a [[DRV11 Parallel Line Unit|DRV11]])
 
* [[Stanford 1822 Interface]], UNIBUS (via a [[DR11-C parallel interface|DR11-C]]) and [[QBUS]] (via a [[DRV11 Parallel Line Unit|DRV11]])
 
* [[Advanced Computer Communications|ACC]] [[LH-DH/11 Local/Distant Host Controller|LH-DH/11]], UNIBUS
 
* [[Advanced Computer Communications|ACC]] [[LH-DH/11 Local/Distant Host Controller|LH-DH/11]], UNIBUS
 
* ACC [[MLH-DH/LSI11 Multiple Channel Controller|MLH-DH/LSI11]], QBUS
 
* ACC [[MLH-DH/LSI11 Multiple Channel Controller|MLH-DH/LSI11]], QBUS
* GIMPSPIF, used by 645 [[Multics]] for [[Network Control Program|NCP]]
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* GIMPSPIF, used by 645 [[Multics]]
* ABSI, used by [[Honeywell 6000 series|6180]] Multics or NCP and [[Internet Protocol|IP]]
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* ABSI, used by [[Honeywell 6000 series|6180]] Multics, for NCP and [[Internet Protocol|IP]]
* [[Xerox Alto|Alto]] interface, used on the [[Maxc|Maxc2]] [[front end]] to connect to the [[ARPANET]] for , on [[PARC Universal Packet|PUP]] [[router|gateways]] to talk to [[Packet Radio Network‎|PRUs]], and apparently eventually on the Alto ARPANET IP gateway
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* [[Alto-1822 Interface]] for the [[Xerox Alto|Alto]], used in a variety of ways
  
 
but there were many others (many being 'one-off' local creations).
 
but there were many others (many being 'one-off' local creations).
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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
 
* [http://www.bitsavers.org/pdf/bbn/imp/BBN1822_Jan1976.pdf Specification for the Interconnection of a Host and an IMP] - BBN Report #1822
* [https://xeroxalto.computerhistory.org/Indigo/Alto-1822/.index.html Alto 1822 code]
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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]
  
[[Category: Network Interfaces]]
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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