[comp.sys.ibm.pc] Query: Adding a cassette port: TDD emulation

randy@uw-june.UUCP (William Randy Day) (01/21/87)

Believe it or not, I have a need to add cassette ports to IBM XT that
mimic the cassette ports on the original IBM PCs. I am trying to use
XTs as TDDs (telecommunication devices for the deaf) and have some
software that uses the PC's cassette port to modulate the signal sent
to the phone.

Does anyone know how I could add cassette ports to XTs or have a feel
for how expensive and how hard this modification would be?

Thanks in advance,

Randy Day.
UUCP: {decvax|ihnp4}!uw-beaver!uw-june!randy
ARPA: randy@larry.cs.washington.edu
CSNET: randy%washington@relay.cs.net