Difference between revisions of "MXV11-A Multifunction Option Module"

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The '''MXV11-A Multifunction Option Module''' is a [[QBUS]] [[DEC card form factor|dual-height]] [[peripheral]] board, intended to allow the creation of complete systems in a minimal-sized QBUS [[backplane]].
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[[Image:MXV11-AC.jpg|200px|right|thumb|MXV11-AC module]]
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The '''MXV11-A Multifunction Option Module''' is a [[QBUS]] [[DEC card form factor|dual-height]] [[peripheral]] board ('''M8047'''), intended to allow the creation of complete systems in a minimal-sized QBUS [[backplane]].
  
 
It contains two [[asynchronous serial line]]s (using the [[DL11 asynchronous serial line interface|DL11]] programming standard), an optional non-programmable [[line time clock]], a block of [[main memory]], and some [[read-only memory|PROM]] for [[bootstrap]] purposes. The serial lines are connected via 10-pin [[Berg connector]] headers on the top edge of the card, using the standard [[DEC asynchronous serial line pinout]], and line 1 can be set to [[halt]] or boot the machine on a [[Asynchronous serial line#Break|break]].
 
It contains two [[asynchronous serial line]]s (using the [[DL11 asynchronous serial line interface|DL11]] programming standard), an optional non-programmable [[line time clock]], a block of [[main memory]], and some [[read-only memory|PROM]] for [[bootstrap]] purposes. The serial lines are connected via 10-pin [[Berg connector]] headers on the top edge of the card, using the standard [[DEC asynchronous serial line pinout]], and line 1 can be set to [[halt]] or boot the machine on a [[Asynchronous serial line#Break|break]].
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* MXV11-AA - 8Kbytes of [[Random Access Memory|RAM]]
 
* MXV11-AA - 8Kbytes of [[Random Access Memory|RAM]]
* MXV11-AA - 32Kbytes of RAM
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* MXV11-AC - 32Kbytes of RAM
  
 
It is a [[QBUS#Variable address size|Q18]] device, and the RAM <!-- nor ROM --> cannot be used when it is in a Q22 system.
 
It is a [[QBUS#Variable address size|Q18]] device, and the RAM <!-- nor ROM --> cannot be used when it is in a Q22 system.

Latest revision as of 21:04, 13 January 2020

MXV11-AC module

The MXV11-A Multifunction Option Module is a QBUS dual-height peripheral board (M8047), intended to allow the creation of complete systems in a minimal-sized QBUS backplane.

It contains two asynchronous serial lines (using the DL11 programming standard), an optional non-programmable line time clock, a block of main memory, and some PROM for bootstrap purposes. The serial lines are connected via 10-pin Berg connector headers on the top edge of the card, using the standard DEC asynchronous serial line pinout, and line 1 can be set to halt or boot the machine on a break.

Two different versions exist:

  • MXV11-AA - 8Kbytes of RAM
  • MXV11-AC - 32Kbytes of RAM

It is a Q18 device, and the RAM cannot be used when it is in a Q22 system.