On Thu, Jul 11, 2019, 12:31 Noel Chiappa via cctalk <cctalk@classiccmp.org> wrote:
> it's also possible that > since the -PA to -PV involved a faster clock, I wonder if some backplane > lines turned into twisted pair, or coax? PA used 25 MHz (40 ns cycle). PV and PW used 33 MHz (33.3 ns cycle). I don't think PA to PV required any signals that were previously single-ended to change to twisted pair, or from twisted pair to coax.
