hammer wrote:
>
> most '486-mainboards came with four memory bank seets
> (until the latest editions which competed with the first
> Pentiums), so the most usual "SurvPC" case probably is
> a 4-meg machine.
Are you talking about 72-pin SIMMs or 30-pin SIMMs?
I agree that four 72-pin slots is the norm on high-end
486s. But with 72-pin SIMMs, four slots is not a problem.
There are plenty of 4meg/8meg 72-pin SIMMs available,
so these machines can readily be taken to 16meg/32meg.
However, the earliest 486 motherboards used 30-pin SIMMs
and usually had eight slots. I even saw one once that
had twelve slots! The problem with 30-pin SIMMs is that
256K and 1meg were the most common sizes. Relatively few
4meg SIMMs were produced and they don't often appear on
the secondhand market. And when they do, they sell for
high prices and are snapped up immediately.
As a result, low-end 486s are usually stuck with 1meg SIMMS,
giving a maximum of 8meg RAM.
Cheers,
Steven
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