26 Oct
2005
26 Oct
'05
11:07 p.m.
On Thu, 27 Oct 2005 00:07:44 +0100
Adrian Graham <witchy at binarydinosaurs.co.uk> wrote:
On 26/10/05 23:44, "Chuck Guzis" <cclist at sydex.com> wrote:
It wouldn't be an XT, it would be a 'PC' and not many were made with the 64K
motherboard. That is called a 'PC-1' to differentiate it from a 'PC-2'
which had the 256K motherboard.
And all the PC (pre-XT) machines had the wider-slot-spacing of the original PC, so
it's not likely anybody 'upgraded' the motherboard in an original case to an
XT or XT-clone motherboard.
(I was one of the exceptions, I had to chop a non-standard-slot-spacing case for my first
'PC' machine which was an XT clone motherboard in a Leading Edge Model D case,
with a 63.5 watt power supply out of a PC that I had to physically remove from the
original IBM enclosure and just bolt the circuit board in the 'Model D' case. But
that was back when a working Model D was too expensive for me, as was a real XT Clone
Case, etc. etc. So I had a cheapskate franken-computer for a long while. Boy that was an
ugly and awkward hack looking back now.)
--
http://sasteven.multics.org/MacSE30/MacSE30.html
I've also got the guide by Purple Computing
for their Purple -2 Kit on how
to put 256K on your PC motherboard by cutting and changing a few jumpers
and then adding a board that attaches over the memory array that holds 64K
DRAMS. I'd forgotten that the original PC was limitied to 64K on the mobo.
I'd have thought this was worth saving if it's related to the 5150 XT, or at
least it is to me. I'm trying and failing miserably to find an XT with a 64K
motherboard, purely because I guess people upgraded them as soon as they
could afford to.