AT&T 3B1 Unix PC
eric at brouhaha.com
Thu Aug 7 16:05:40 CDT 2008
Ethan Dicks wrote:
> Did anyone ever come out with a SCSI interface for these, even a home-brew
I wire-wrapped one, using a 5380 chip. It wouldn't fit in the 3B1, so I
had to put it in the expansion box. I wrote a driver to test the
hardware, which had ioctl() calls to read and write registers of the
5380. I didn't get a real block driver going, though.
The 99-pin connectors for the bus are really hard to find; I wonder
whether AT&T or Convergent were trying to make it difficult for
third-parties to build peripherals. Possibly one could cut down a
120-pin connector. Maybe if the 3 pins at one end aren't necessary, one
could butcher a 96-pin connector.
More information about the cctech