Ray,
 Think Toms sorted by doing just that, see post 6, it says

Quote

so I put the Y outputs to different pins and all is fine now.

Like you I suspect its the BOB that the problem lies with.
Hood

Yup, that post showed up while I was composing mine. 

I wish I could say I'm surprised, but some BOBs seem to create more problems than they solve....

Regards,
Ray L.

Thanks Again Ray and Hood,  the C23 is made for the SS(plus right in) and has 1Mhz opto step and dir pins,  Probably just a bad chip. 

The board is great to work with and I would trade it.

Thanks

Tom