I guess this cable could work, with minor modifications as this is not a test board but a unit build by moto, therefore there is no 10 pin connector as this cable uses, I do believe at this point that we only need to work with 4 points (TDI, TCM, TMS, TDO) which are on the pic I made and sent you, I found a tutorial to build a byteblaster cable for about 15$, The hardest part to get is the 74LS244 Octal Buffer, I will have to check online if I can find one somehwere