Spindle stop from G-code (M05)

My present HAL spindle start, stop logic is working as desired except M05 commands in my gcode files are ignored.

I can change the OR gate to a 4 input (personality 0x204), however I'm not sure what signal I would use to drive that 4th input, or if there is an overall more elegant solution for spindle control. Note: I always manually start the spindle before hitting the run button for gcode execution, so I don't really need G03, G04 capability.

Suggestions please.
   

If you want an M5 gcode to shut your spindle off you would probably want to use an internal motion pin like 'spindle.0.on' and invert that.

linuxcnc.org/docs/html/man/man9/motion.9.html