Im sure the PC software is setup correctly. I can change the address of the chip fine (that only takes 2 bytes). The PC software works on other chips too.

I think im gonna try a different aproach. Im going to buffer all the incoming data as fast as i can then deal with it every half cycle

Edit: Yes, 18 bytes for control. 2 bytes for an address reset. When sending 18 bytes it misses out 1-3 bytes