VAX Family

The collection has a few MicroVAX machines, and also some unusual boards from an Intergraph/VAX system that was housed at Wisconsin DOT (photos of the Intergraph boards have not yet been taken).

Also not shown are a couple of MicroVAX II machines in the larger, wheeled BA123 free standing cabinet with wheels. Both have dead power supplies.

MicroVAX II’s — BA23 Cabinet

Digital Equipment MicroVAX II’s in BA23 cabinets along with a TK50 tape, RX50 Floppy and SMD disk drives

This pair of MicroVAX II’s were “donated” to the collection when I got a call from a good friend whose mother worked for an outfit supporting medical records software (not Epic!). They were downsizing, and had a number of computers that they were happy to have someone – like me – tote away. I obtained an IBM RT PC and a couple of AT&T 3B2 computers at the same time. The IBM Series/1 mini wouldn’t fit in my trunk – or my basement – by that time.

The top MicroVAX II has a TK50 tape drive, the bottom one has a RX50 floppy drive. Below that, with the two white switches, are a pair of Fujitsu SMD disk drives that were still functional last time I checked.

MicroVAX 3300

Digital Equipment MicroVAX 3400 6400R with TK70 tape drive and SCSI CD Drive

This MicroVAX 3300 was obtained through the University of Wisconsin “SWAP” surplus program for a “song”. It has a tag declaring its obsolescence which meshes nicely with the one from Hannes’ PDP-11/20. It has:

  • A KA640-BA CPU with a serial console and Ethernet
  • MS650-AA 8MB of memory
  • A KRQ50 special DEC CD-ROM interface (not connected)
  • A pair of RF30 150MB DSSI disks
  • An M3107 8 line asynchronous multiplexor (the unconnected multicolored ribbon cable)
  • A TK70 tape drive (partially obscured by the green tag)
  • A CMD Technology SCSI interface (connected to the CD drive on top.