From: joe@user.com
"Ira" wrote in message
news:14j4k39660r5tr5cvboppe0ol890l7a4ou@4ax.com...
> Greets,
>
> Does anyone know if there is a way to tell whether an expansion
> interface needs a buffered interface or not? Be it from a snapshot of
> the inside or any other way?
>
> Thanks!
If you don't see the 3 'twisted wire pairs' with resistor terminators
when you look at the board, then the buffered EI cable was never
installed. There was also the buffered EI cable with the dongles.
(There was another term for it but I won't mention it here.)
Those twisted wires were RAS, MUX, and CAS, and they were the
real issue. In fact, the 'second generation' EI didn't take them over,
the signals were generated 'on board' by a DDU to solve a race/noise
issue. The units with the DDU (a black rectangle on the EI
board) you CANNOT buffer. Well, you could, but it didn't matter.
The big issue is there won't be power for the buffered cable unless
the 'mod' is done, and the mod wouldn't get done on the new EI.
If your question is does it 'need' the buffered EI cable, well, that's
another matter. Some systems needed it, some didn't. And you
could swap out CPUs to try to get a bit better on the combination
as well.
The system I owned back in 1979 didn't need it.
It was rock solid. Well, except about 6:30 to 8 or so every evening
when the woman in the apartment above me got home. I don't know
what she did, but my system was solid, until about 15 minutes after
she got home from work every night.
In the day I did everything I could. Tried a Corcom 10R1 in the
power cord. Helped, but not 100%. The RS power strip helped
too, but not 100%. Even when I replaced my EI with the new
design, it was not 100%.
Funny thing, I don't think it EVER reset on me on a weekend, even
if she was home.
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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