19 Dec
2018
19 Dec
'18
12:35 p.m.
I thought that seller had permission?
I don't remember what license, if any, Sergey chose for his work. Perhaps
it's in compliance. In any case, it's not a new design -- Sergey's wasn't
either, it was an improvement on the N8VEM XT-FDC project.
I intend on redoing Sergey's design, with permission, at some point in the
not too distant future. Personally, I want a DC37 and both card edge and
pin header internal 34-pin connections, so that I can drop the board in as
a replacement for a PC or XT floppy controller without changing cables. As
with the XT-IDE, onboard serial doesn't seem like much of a feature to me.
I've avoided redoing any of Sergey's designs as he'd contacted me some time
ago asking how the kit thing was working out with XT-IDEs. It'd sounded
like he intended to maybe run some of his designs and provide kits and/or
assembled+tested boards for hobbyists. I probably ought to reach out to him
and see if that's still the case or not.
Thanks,
Jonathan
On Wed, Dec 19, 2018 at 3:25 PM Fred Cisin via cctalk <cctalk at classiccmp.org>
wrote:
On Wed, 19 Dec 2018, Ali via cctalk wrote:
Has anyone seen these before? They seem to be a
new take (just a shrink
down) of the XT-IDE and an FDC controller that supports single density
(FM) and 2.88 ED drives (along with the usual PC stuff). The FDC is
interesting. I would have liked to have seen it be more like a CCIV w/
four drive support and addresses but given that most FDCs will not
support FM this is a great step forward.
www.ebay.com/itm/DeluxeFloppy-8-bit-ISA-Bootable-HD-Floppy-Serial/332861819…
SOME FDC will support FM.
SOME FDC can sorta do 128 byte sectors.
It looks nice, but,
I want a DC37 external connector, instead of the serial. Or use a header
for serial to give space for the DC37.
Or (would require moving stuff around a little, or a taller board), a
second 34 pin header, and a DC37 on a bracket with short cable.
Serial are a dime a dozen. IBM gave away FREE serial (and 20mA!) card
with XT, just to keep us from plugging anything into the 8th slot!
(OK, that one from IBM wasn't as fast as current, . . . )
Chances are real good that it already supports 4 drives, other than the
connector.
Trivia mods should be able to enable 3 drives, with "standard", instead of
IBM "twist" cable.
And NOT by repurposing SIDE SELECT like Radio Shack did for their fourth
drive!
--
Grumpy Ol' Fred cisin at xenosoft.com