7 Nov
2013
7 Nov
'13
5:10 p.m.
Does anyone have any experience with replacing aging 50-pin (or even
68-pin and SCA) SCSI drives with a SCSI-to-CF bridge? I'm thinking
specifically for DEC hardware (PDP-11, VAX or Alpha).
In 2008, I bought an Acard AEC-7720U 50pin SCSI to IDE adapter for EUR 60 plus
an IDE to CF adapter from Hong Kong for less than EUR 2. Unfortunately, I think
the price of the former has increased since.
The setup works nicely with my Alphas to read CF cards directly and SD and XD
cards via yet more adapters purchased in a camera shop (except for some
unreliability reading the XD cards.) I've not done much writing.
A PWS 500a I was given had an IDE disk in it and a 68pin SCSI to IDE adapter
(also Acard) which seems to work nicely, although I have not tried booting
from it.
Also given the fact I have a good supply of drives, how cheap can
such bridges be obtained? Believe it or not, part of what I'm
thinking of is noise.
I've not had any noise problems with this setup :-)
Regards,
Peter Coghlan.
9 Nov
9 Nov
12:55 p.m.
On Thu, Nov 07, 2013 at 10:10:55PM +0000, Peter Coghlan wrote:
[...]
In 2008, I bought an Acard AEC-7720U 50pin SCSI to IDE
adapter for EUR 60
plus an IDE to CF adapter from Hong Kong for less than EUR 2. Unfortunately,
I think the price of the former has increased since.
I picked up mine on eBay for about ?35 back in 2003. Current prices are now an
eyewatering ?190! I think I'll skip the project I was planning that required me
to acquire a second one.
Anyway, for anybody who is lucky enough to be able to acquire one at a sane
price, they're lovely bits of kit and the firmware understand both IDE and
ATAPI. Sadly, the IDE support is limited to LBA28, so you can only use the
first 137GB of large disks. The ATAPI support has worked with every optical
drive I've tried, including DVD writers, and it never resulted in coasters. I
also tried it with a LS120 drive, and indeed I had a 1.44MB "disk" turn up on
the SCSI bus when I inserted a floppy :)
12 Nov
12 Nov
3:56 p.m.
New subject: Adaptec 1522 16 bit SCSI + floppy
Make an offer that includes shipping.
Handed to me by somebody else. I have not tested it.
--
Grumpy Ol' Fred cisin at xenosoft.com
http://www.xenosoft.com/FPUIB
5:15 p.m.
New subject: Adaptec 1522 16 bit SCSI + floppy
On Tue, Nov 12, 2013 at 2:56 PM, Fred Cisin <cisin at xenosoft.com> wrote:
Make an offer that includes shipping.
Handed to me by somebody else. I have not tested it.
The 1522 is one of the "Passes All Tests" models listed on Dave's
Imagedisk page:
http://www.classiccmp.org/dunfield/img54306/pcfdc.txt
I use one in my floppy imaging PC and while I haven't tried every
possible format out there, it hasn't failed me yet. And hey, you get
SCSI out of the deal, too.
j
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abuse＠cabal.org.uk -
cctech＠beyondthepale.ie -
cisin＠xenosoft.com -
silent700＠gmail.com