DIRXOR(OPCSDEFS)	Optical Printer Control System	       DIRXOR(OPCSDEFS)

        dirxor - invert the direction of a motor (direction XOR)

        dirxor [chan] [invert]

	dirxor b 1    # invert direction of the projector motor.
	dirxor c 1    # invert direction of the camera motor.

        After setting up a new motor, you notice that executing a command that
	should run the motor forward actually runs it BACKWARDS, and vice-
	versa, you can remedy this by either rewiring the motor (the hard way),
	or changing the DIRXOR(OPCSDEFS) command in your OPCSDEFS.OPC file.
	By changing the [invert] value from 0 to 1 (or 1 to 0, as the case
	may be) you can invert the software's sense of direction for that motor.

	[chan] is the motor channel being affected.

	[invert] can be either a 0 (default) or a 1, depending on which value
	         suits the installation.

        Changing this value in the OPCSDEFS.OPC file as a prank is a truly 
	nasty way to drive the next shift's cameraman completely nuts, and
	confuse the shit out of everybody who uses the machine after you.


	Gregory Ercolano, Los Feliz California 11/29/89

© Copyright 1997 Greg Ercolano. All rights reserved.