mach3 interface board

There probably aren't many parallel port MACH3 motherboards left now; they're from many years ago. Parallel ports were on motherboards around ten years ago. Gigabyte B85 motherboards (with CPUs like the i5 4570 and 1150) have parallel and serial ports. I have several motherboards with parallel ports (B85, J1900...) and want to revive my old CNC engraving machine.
Using the 74ACT245 is better for the U201 and U202 because its input level is compatible with TTL input (high level minimum 2.0V), suitable for laptop parallel ports (some are 3.3V). Of course, such laptops are rare now.
 
Below are the limit switch interface, tool setting interface, and emergency stop interface.
 
This is PWM to 10V to control the spindle motor speed.
Below is the manual control interface; this part doesn't need to be soldered. The switch is on the manual control side; pressing the switch manually switches to manual mode. If the switch isn't pressed, it doesn't affect the parallel port interface board.
Below is the motor rotation switch, which is basically a relay.
 
It seems that because it's a professional version, the PCB/SCH is combined. 
Some of the BOMs are for components I have on hand.