I have limited memories of this machine.
Certainly I remember one of these at a customer in London. It used a proprietary UNIX derived operating system called BOS, or BULL OPEN SYSTEM.
I’m not sure if it was badly overloaded or malfunctioning, but whatever the reason the one I used was exceedingly slow!
The variant I touched wasn’t on an IP Network, and instead had a multitude of Serial RS/232 cabling at the back running Wyse and Digital VT series terminals and printers.
I spent many an hour troubleshooting the UUCP and dialup compatibility between this machine and SCO XENIX Intel based Servers.
The DPX/2 product line comprised a mixed bag of differing UNIX products introduced before 1985 separately by Bull and Honeywell.
There was little commonality within the range, and the platforms ran different Operating Systems, and used different CPU Architecture from either Intel (x86) or Motorola (68K)
Bull positioned these products in the business application market as an alternative to the GCOS4 and GCOS6 product lines.
The Range was as follows:
This model was based on an Intel x86 platform, running SCO Unix. It was withdrawn a few months after its introduction in 1990.
— The DPX/2-150 used a 33Mhz 80486
The DPX/2 200 series used a Motorola 68K series CPU, and ran a proprietary UNIX variant called BOS (Bull Open Software).
— The DPX/2 250 ran on a 25Mhz Motorola 68040 (rated at 15 MIPS)
Was intended to be an extensible SMP system based on Motorola 68000 series CPU’s, but again ran BOS.
I also have bad memories of the RS/232 serial ports on this machine, as used for Printers and Dumb Terminals. The ones I remember used high density Micro RS/232 connectors, which were about 7mmx3mm. It was impossible to cable those connectors, so anything I had to do usually involved shortening an existing cable by a few millimetres and re-terminating it with either RS/232 DB9 or DB25, or in some cases RJ45.