Need help with Linux 2.5 on a CNC lathe

# we will need the inverse of the direction signals for our logic, so run it through a not gate
net ydir => not.2.in
net ydir-inv => not.2.out

# we need to determine if the home switch for each motor is tripped while the direction line is
# moving the motor towards the switch

# for both y-axis motors, we will prevent the step signal from passing to the motor
# if the motor is moving towards the switch and the switch is tripped
# so "or" the inverted direction signals and the inverted home switches
net ydir => and2.3.in0
net switches-y1 => and2.3.in1
net doh1 <= and2.3.out
net doh1 => not.3.in
net doh1-inv => not.3.out

net ydir => and2.4.in0
net switches-y2 => and2.4.in1
net doh2 <= and2.4.out
net doh2 => not.4.in
net doh2-inv => not.4.out

# if the step generator is trying to send a step (ystep signal) and either the motor is moving
# away from the switch or the switch is not tripped, then pass the step signal to the motor
net ystep => and2.1.in0
net doh1-inv => and2.1.in1
net ystep1 <= and2.1.out

net ystep => and2.2.in0
net doh2-inv => and2.2.in1
net ystep2 <= and2.2.out

halcmd setp halui.home-all 1
halcmd setp halui.home-all 0