NAME
VBeamPos -- Get vertical beam position at this instant.
SYNOPSIS
pos = VBeamPos()
d0
LONG VBeamPos( void );
FUNCTION
Get the vertical beam position from the hardware.
INPUTS
none
RESULT interrogates hardware for beam position and returns value. valid results in are the range of 0-511. Because of multitasking, the actual value returned may have no use. If you are the highest priority task then the value returned should be close, within 1 line.
BUGS
SEE ALSO