Viking SCSI controller RS232 adapter

[Douglas Taylor via cctalk]

I have a couple of these boards but have never got into the on-board 
monitor which requires an adapter board that allows a terminal to talk 
to the controller board and do various things.

Looking at the manual on bitsavers there is almost enough info to 
construct my own adapter board.  Has anyone ever built there own adapter 
to the controller?

Doug