MXV11-A Multifunction Option Module

From Computer History Wiki
Revision as of 21:04, 13 January 2020 by Jnc (talk | contribs) (+image)
Jump to: navigation, search
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.

Retrieved from "https://gunkies.org/w/index.php?title=MXV11-A_Multifunction_Option_Module&oldid=21938"