Star bus order reversed (possibly)
I think the STAR-X bus order is reversed, because the MSB (STAR-X8) is counting on its own, then STAR-X7 counts based on STAR-X8 and its own state, STAR-X6 is based on 8:6; and STAR-X5 counts based on 8:5. I would have expected the LSB (STAR-X5) to be at the top of that diagram.