[net.micro] HELP: Bally cassette interface

rich (11/24/82)

   I realize that most of you will probably think this belongs in
net.wanted, but I figure this group is more likely to know the answer
to my problem. 
   I recently purchased a Bally Home Computer for the purpose of
playing games. It comes with a cartride that allows the system to be
programmed in BASIC so you can create your own games (and appeared to
be cheaper than programmable ATARI products). There is an audio-type
jack in the cartridge to hook it to a cassette player to store your
programs, but I can't seem to find a part number anywhere in the book
for this patch cord.
  If anyone out there in netland has a Bally system or knows what kind
of jack this thing uses (I do not want to break open the cartridge),
I would sure appreciate the help. 
   Thank you.                        Rich Amber