Well this could be one for the books !

Does anybody know how and if one can slow down the processor on the older pentium computers ?

Let me explain..........as in previous posts of mine I explained that I use the older generation machines to to CAM and they run on DOS.
One of the functions of the wire cutting machine is to be able to, after doing its cutting job, to return to its original starting point e.g. x axis =0 and y axis = 0 but the speed at which the stepper motors get driven is controlled by the speed of the computer processor/clock or whatever. If the speed is too high then the stepper motors cannot keep up with the pulses and misses steps with the result that the machine does not return to its "0" point although the computer shows "0"

Your help would be greatly appreciated !