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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