I had my Otrona 8:16 upgraded from 256KB to 640KB RAM, so it now has stacked chips.
However, that was a mod done at the time (actually, Otrona Advanced Systems had gone under
by then, but it was a 3rd party (Brown Enterprises) mod that was current with the machine.
What Tony was objecting to is a modern collector hot-rodding an old box by increasing the
RAM (or processor, or ...) in a way that would not have been done contemporaneously with
the machine.
-----Original Message-----
From: Jim Davis [mailto:jpdavis@gorge.net]
Sent: Sunday, June 15, 2003 2:13 AM
To: cctalk(a)classiccmp.org
Subject: Re: Restoration: how far should it go??
Eric Smith wrote:
"jamesd" <jdickens(a)ameritech.net>
wrote:
I see you have higher standards than IBM, for a
while after the AT was
released they sold ram that was two chips piggy backed so they could get
more
ram on the board.
<snip>
Both the CLCC on substrate and the factory-stacked DIPs were actually
quite reliable. Until ZIPs, SIPPs, and DIMMs were invented, that was
the highest packaging density in common usage for RAM.
I thought one DIP had an inverted CS, Though I might be wrong. I did the
stacked thing on my atari 400,
Stacked 8K chips to get 16K. But that was in 82 and the atari H/W
manuals are in the garage.
Jim Davis.