Question: Guidelines for stepper motor settings? Such as nema23?

[mrbi11]

I haven't found any inforamtion sources for how to set up rambo for a new motor.
I am using Rambo in my SeeMeCNC delta printer,
and am trying to adapt another Rambo card to my desktop cartesion CNC running all nema23 motors. About 2 amps max I'd guess.
I have 24volt supply and current setting of 175.
The first "lets try it and see if it works" run had mixed results. The motor moved erratically, including back and forth. Swapping direction on one coil of stepper neither fixed nor brought it to a halt.
Micro-stepping is set to 8, because it already was. Any relation to motors?
The comment says its just for rambo, so I'm thinking its a board thing only. But here is me asking.

thanks all.