Picture is on the VCF discussion here:
50-pin ATA to 44-pin ATA conversion options | Vintage Computer Federation
I could be wrong, maybe it is a SCSI interface.
On Sun, Mar 26, 2023 at 3:22 PM Wayne S via cctalk <cctalk(a)classiccmp.org>
Can you post a picture somewhere?
Sent from my iPhone
On Mar 26, 2023, at 13:20, Paul Berger via cctalk
I have seen lots of laptop drives that would fit a 50 pin connector
that is about 2mm pitch Looking at the back of the drive from the left
there are 44 pins in a group then 2 pins missing and the remaining 4 are
for selecting master and slave.
> On 2023-03-26 4:33 p.m., Steve Lewis via cctalk wrote:
> Is anyone familiar with the 50-pin IDE interface, which I think is
> 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 believe it is different (electrically) than the 1.8" 50-pin
> ordered a CF-to-50-pin adapter that is
intended for those 1.8" drives,
> it won't work on this ATA-2 port (system
won't boot with it inserted).
> However, all my CF cards are larger than 2GB - so I'm not sure if that
> the issue (don't think so, I think even
with 8GB or larger it would
> at least try to boot).
> The 2GB drive in this Presario (with the "weird' 50-pin IDE) contains
> Windows ME and Office 2000. That's cute, but I'm not so interested in
> - I was hoping to image that drive for
archive, then install something
> (OS2). But I can't find any "ATA-3
to normal 40-pin IDE" adapter.
> I think the "6 extra pins" on this 50-pin (relative to normal 44-pin
> drives of those days) -- 2 of those pins
(5-6) aren't used (maybe a
> key) and the 4 others (1-4) are vendor
specific. So I may just be out
> luck here in upgrading or replacing this
drive with a more modern
> solution. But wanted to run it by the crew here before giving up.
> -Steve / v*