Null modem cable

[Psion@ocean-side.ecore.fnet.org]

       I'm looking for the proper pin configuration for a IIgs<--->IBM null
modem cable.  I had a cable made for a IIgs 8 pin mini-DIN to IBM RS-232
(DB-25).  Problem is it only works one way.  The people I bought from
couldn't find anything wrong with the cable itself and said they had wired it
properly.  At least they had it wired properly for a Mac to IBM connection.
After all, who remembers Apple IIs when you ask for a null modem cable for an
Apple computer.  They offered to fix it at any time, provided I found the
right pin configuration.

--