26 Aug
2014
26 Aug
'14
11 a.m.
On Tue, Aug 26, 2014 at 9:33 AM, drlegendre . <drlegendre at gmail.com> wrote:
Termination has to go. I'll start by disconnecting
the power. But if that
doesn't do it, then it's bye-bye for all of it.
In private email I advised against, but I think it is worth trying
just disconnecting the termination power, and if that isn't enough,
perhaps try disconnecting the termination from just one of the data
lines to see if that results in different behavior for the
corresponding LED.
Maybe someone more familiar with the actual Altair boards can comment
as to whether they have inadequate drivers for bus termination? It
seems unlikely to me since the intended the user to be able to chain a
bunch of their four-slot backplanes and have a fair number of cards,
but it's possible that they cut corners or didn't think it through.