Damaged driver

[cyberjunkiefr]

Hello,

First of all thanks for the great job this software worked from start without to much hassel.

My problem:
I don't use a arduino mega2560 board + Ramps v1.4 but a MKS BASE V1.6, wich is compatible with the Ramps1.4 and is a all in one solution (cheap).
Form start I just downloaded the sketch loaded it to my board and it was done!!

By stupid mistake I damaged one of the oneboard drivers.
I hook the motors up like explained here.
X = E0
Y = E1
U (t-axis) = Y
Z = Z
I broke the u-axis (y) driver, but I still got the original driver for X-Axis not used.
I've been trying to understand, wich pins to set up to "connect" the u-axis to the physical x-axis.
I found this in pin_Map.H

Now I'm trying to understand the pinout of the mega2560 board (shield connector) and the corresponding pinout of the ramps1.4 board.

That's where I'm lost.
Can somebody tell me what value I should use for #define T_STEP_BIT and
#define T_DIRECTION_BIT? so that the T-AXIS would be connected to the physical X-AXIS driver.

And meaby some explaination about these values so I can understand better.
I want to hook up some 3-wire endstops to my machine so if I can figure it out my self I feel happy.

Thanks in advance

Roel Jaspers