input to serial ports

[BUG at SWAT.SWARTHMORE.EDU]

Can I have advice from someone on sending integers in ASCII format to
my 4D/70 through one of the RS-232 ports on the back the towers?  We are
building/have built a joystick and would like to send a stream of
triples of numbers:  x  y  z   in a way which can be comprehended by
a graphics routine.  Do we need (horrors!) some fancy driver in order to
accomplish this?  Thanks!
    Amy Bug, Dept. of Physics and Astronomy,  Swarthmore College
    BUG at SWARTHMORE (BITNET)  bug at campus.swarthmore.edu