On Sun, 26 Mar 2023 at 15:33, Steve Lewis via cctalk <cctalk(a)classiccmp.org>
Is anyone familiar with the 50-pin IDE interface,
which I think is called
ATA-3? It is from around 1997-2002. Normally IDE is 40-pin, or in
laptops might be a 44-pin.
But in a COMPAQ Presario 1220, I've come across its hard drive that is
using this 50-pin interface (two rows of 25-pin that are quite
small/tightly spaced - moreso than even PCMCIA).
I have a vague memory of seeing one of those drives in a contemporary
setting but that was quite some time ago. Unfortunately I'm not familiar
with this specific laptop line though I did find a link to the parts
. That only lists potential drive spares, though that might be of use when
trying to track down a pinout. Sorry I couldn't have been of more help.