The LocalTalk PC Card can work with an IBM 3270 PC.
The IBM 3270 PC is an IBM XT or AT personal computer (depending on model)
that has a System/370 processor card, memory card, and a 3277 emulation
card installed.
The LocalTalk PC card will work as long as the 3270 is operating in the
DOS environment. You must also ensure that you have IRQ 2,3, or 4 available
for use.
(NOTE: The IRQ addresses that are available will vary depending on what
cards are already installed.)