I downloaded FANUCSLD and Dosbox for run it and its working ok

but when I'm working on step mode, for each time i press the x axis bottom the machine moves two steps. When I want to move the x axis 1 mm it moves 2 mm.

Is there a form to calibrate the X axis motor?
How can I solve this problem?

i could get the original software and the dongle key, it was a box with 5 51/4 disks, they was in perfect conditions, the 5 disks was named: FANUC OT DESKTOP TUTOR IBM version 1.34 Parallel key 24-Mar-1992 FANUC OT QWERTY system IBM version 1.34 Parallel key 24-Mar-1992 POST PROCESSORS DENFORD LATHE...

I get a starturn, it never was used, but all seems to be ok. the black metal case says starturn, in the main board inside it says lcb3 and it says mirac 2.0 on a chip. the manuals says "fanuc ot turning offline programming system. with desktop tutor" and it says it uses denford fanuc turning v1.0. i...