TRS-80 Model I - test-drb@ccmp.vtda.org

26 Oct 1998

...
  Speaking of A-F keys, does anyone here use any of the
alternative
 keyboards available for PC XTs and ATs? I'm curious if anyone has
 ever seen the IrmaKey/3270 (IIRC) keyboards. They must have something
 like 130 keys, but I have no idea how to program the macro keys.
 Anyone know? I never saw a special keyboard for Irma.  The IBM 3270-PC had a
special
cable with 3 connectors.  One for the 3270 card, one for the keyboard port
on the motherboard and one for the keyboard itself.  The 3270 card trapped
most of the extra keys.

ISTR that Autocad had extra keypads and things that you could get for use
alongside the PC keyboard, but I have no idea how they worked.  Extra port
I imagine.

Philip.