Difference between revisions of "PDP-11/73"

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[[Image:pdp11-73.jpg|150px|thumb|right|PDP-11/73]]
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[[Image:mpdp73.jpg|right|thumb|200px|PDP-11/73]]
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The '''PDP-11/73''' is a high-end [[QBUS]] [[PDP-11]] system. Confusingly, the [[Central Processing Unit|CPU]] board is the [[KDJ11-B]] (M8190), the same as the [[PDP-11/83]] - no [[Digital Equipment Corporation|DEC]] '-11/xx' system seems to use the earlier [[KDJ11-A]] (M8192). (The ''Microcomputer Products Handbook'' does refer to the KDJ11-A as the "LSI-11/73 microcomputer", however.)
  
Confusingly, the CPU board is the [[KDJ11-B]] (M8190), the same as the [[PDP-11/83]] - no DEC '11/xx' system seems to use the earlier [[KDJ11-A]] (M8192). (The 'Microcomputer Products Handbook' does refer to the KDJ11-A as the "LSI-11/73 microcomputer", however.)
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The difference between the /73 and /83 is that the latter uses [[Private Memory Interconnect|PMI]] [[main memory]], instead as the QBUS memory of the -11/73.
  
 
== hampage.hu ==
 
== hampage.hu ==
 
Quoting:
 
Quoting:
[[Image:mpdp73.jpg|left|thumb|200px|PDP-11/73]]
 
 
<i>
 
<i>
Introduced in 1984. Successor of the [[PDP-11/23]]. At that time the components were VLSI, and these PDP-11's were marketed as MicroPDP's (this has in fact begun with the [[PDP-11/23]]). The PDP-11/73 had a 15MHz [[J-11 chip set]]-based CPU with 22-bit memory management for the 4MB RAM max. Just to make life more complicated, 18 MHz [[PDP-11/83]] CPU boards can also be found in PDP-11/73 systems, as a PDP-11/83 CPU ([[M8190]]-A[DE]) with QBUS memory (instead of the [[Private Memory Interconnect|PMI]] memory used in those systems) is called a PDP-/73...  
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Introduced in 1984. Successor of the [[PDP-11/23]]. At that time the components were VLSI, and these PDP-11's were marketed as MicroPDP's (this has in fact begun with the PDP-11/23). The PDP-11/73 had a 15MHz [[J-11 chip set]]-based CPU with 22-bit memory management for the 4MB RAM max. Just to make life more complicated, 18 MHz PDP-11/83 CPU boards can also be found in PDP-11/73 systems, as a PDP-11/83 CPU (M8190-A[DE]) with QBUS memory (instead of the PMI memory used in those systems) is called a PDP-/73...  
  
There was no UNIBUS equivalent.
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There was no UNIBUS equivalent.</i>(Incorrect. The [[PDP-11/84]] shared the same CPU, and had a [[UNIBUS]].)<i>
  
 
The J-11 was manufactured by Harris Semiconductors, and it hasn't been fully completed, it lacked the WCS and CIS options.  
 
The J-11 was manufactured by Harris Semiconductors, and it hasn't been fully completed, it lacked the WCS and CIS options.  
  
A very popular enclosure is displayed to the left: this was the BA23 standing tower configuration, that had place for a 8x4 backplane, an [[RX50]] floppy or [[TK50]] streaming tape drive and an RDxx harddisk. The BA23 could also be rack-mounted.
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A very popular enclosure is displayed to the right: this was the [[BA23 Enclosure|BA23]] standing tower configuration, that had place for a 8x4 backplane, an [[RX50]] floppy or [[TK50]] streaming tape drive and an RDxx hard disk. The BA23 could also be rack-mounted.
 
</i>
 
</i>
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[[Image:pdp11-73.jpg|150px|thumb|left|PDP-11/73 in a different style of box]]
  
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<br clear=all>
 
{{semi-stub}}
 
{{semi-stub}}
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==Further reading==
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 +
* ''MicroPDP-11 Systems Owner's Manual'' (EK-MIC11-OM) - This, and the three related MicroPDP-11 manuals below, are not specific to the PDP-11/73, but contain a great deal of material which applies to the MicroPDP-11/73
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==External links==
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* [http://bitsavers.org/pdf/dec/pdp11/microPDP11/AZ-FI13A-MC_MicroPDP11_Systems_Owners_Manual_Jun86.pdf MicroPDP-11 Systems Owner's Manual] (AZ-FI13A-MC)
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* [http://bitsavers.org/pdf/dec/pdp11/microPDP11/EK-MIC11-TM-002_MicroPDP11_Systems_Technical_Manual_Sep85.pdf MicroPDP-11 Systems Technical Manual] (EK-MIC11-TM-002)
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* [https://vt100.net/mirror/antonio/ek-mic11-sg-001.pdf MicroPDP-11 Systems Maintenance Guide] (EK-MIC11-SG-001)
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* [http://bitsavers.org/pdf/dec/pdp11/handbooks/PDP-11_Systems_Handbook_1987.pdf PDP-11 Systems Handbook]
  
 
{{PDP-11}}
 
{{PDP-11}}
  
 
[[Category: QBUS PDP-11s]]
 
[[Category: QBUS PDP-11s]]

Latest revision as of 15:41, 10 October 2024

PDP-11/73

The PDP-11/73 is a high-end QBUS PDP-11 system. Confusingly, the CPU board is the KDJ11-B (M8190), the same as the PDP-11/83 - no DEC '-11/xx' system seems to use the earlier KDJ11-A (M8192). (The Microcomputer Products Handbook does refer to the KDJ11-A as the "LSI-11/73 microcomputer", however.)

The difference between the /73 and /83 is that the latter uses PMI main memory, instead as the QBUS memory of the -11/73.

hampage.hu

Quoting: Introduced in 1984. Successor of the PDP-11/23. At that time the components were VLSI, and these PDP-11's were marketed as MicroPDP's (this has in fact begun with the PDP-11/23). The PDP-11/73 had a 15MHz J-11 chip set-based CPU with 22-bit memory management for the 4MB RAM max. Just to make life more complicated, 18 MHz PDP-11/83 CPU boards can also be found in PDP-11/73 systems, as a PDP-11/83 CPU (M8190-A[DE]) with QBUS memory (instead of the PMI memory used in those systems) is called a PDP-/73...

There was no UNIBUS equivalent.(Incorrect. The PDP-11/84 shared the same CPU, and had a UNIBUS.)

The J-11 was manufactured by Harris Semiconductors, and it hasn't been fully completed, it lacked the WCS and CIS options.

A very popular enclosure is displayed to the right: this was the BA23 standing tower configuration, that had place for a 8x4 backplane, an RX50 floppy or TK50 streaming tape drive and an RDxx hard disk. The BA23 could also be rack-mounted.

PDP-11/73 in a different style of box


Further reading

  • MicroPDP-11 Systems Owner's Manual (EK-MIC11-OM) - This, and the three related MicroPDP-11 manuals below, are not specific to the PDP-11/73, but contain a great deal of material which applies to the MicroPDP-11/73

External links