KL10-A/KL10-B differences

Eric Smith spacewar at gmail.com
Fri Jul 12 20:02:35 CDT 2019

On Thu, Jul 11, 2019, 12:31 Noel Chiappa via cctalk <cctalk at classiccmp.org>

> 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.

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