MPCNC help with Homing switches on LPT board

Hi
I have MPCNC with 5 motors, 5 homing switches (X - dual, Y - dual, Z) and 1 probe swith. Now all work on chines LPT BOB with Mach3. I want to use LinuxCNC with this LPT board.
Here is Mach3 input configuration:
LPT 10 - Homing Y 
LPT 11 - Homing B (X Slave)
LPT 12 - Homing A (Y Slave) and Homing Z
LPT 13 - Homing X
LPT 15 - Probe

Please help, how can I configurate Homing A and Homing Z on same input LPT 12?
 

In Stepconf you can only pick one function for each parallel port pin, but that doesn't mean that LinuxCNC doesn't support it.

Create a config with Z-home not allocated, then when the config is finished, edit the HAL file by hand.

You will see a line looking something like:

Edit that to say

If you want you can also change the signal name (home_Y2) to something that makes more sense to you.

Also, I am guessing the joint-to-axis allocations, so the numbers above might not be right. Adapt the numbers to suit your actual config.