19 Dec
2002
19 Dec
'02
7:53 p.m.
Fred Cisin (XenoSoft) wrote:
There was also a Vista 8" floppy controller for the Apple ][, built
around the WDC 1793 I think. I have one of those in a Basis 108.
-Frank McConnell
> seeing
one that had some extra diagnostics and stuff. And, of course,
> there was the Sorrento Valley Associates board that did MFM in Apple][
On Thu, 19 Dec 2002, Sellam Ismail wrote:
Ooh, juicy! Where can I get one of those?
It's been a while since I've seen one. They were mostly pushed in the 80s
for being able to connect 8" drives! 
20 Dec
20 Dec
6:32 a.m.
New subject: Acorn A3000 and A3010 (was: Re: Apple disk controllers)
Frank McConnell wrote:
There was also a Vista 8" floppy controller for
the Apple ][, built
around the WDC 1793 I think. I have one of those in a Basis 108.
1793? That was in
the same family as the WD1770 and 1772, wasn't it?
Speaking of which, has anyone got a WD1772 spare? I'd like to put a
high-density (1.6MB) disc drive in my Acorn A3000, but the instructions I've
got to upgrade it say that I've got to use a WD1772 with an 02-02 batch
code. Basically, the addon circuit overclocks the 1772 when high-capacity is
needed and patches the ADFS filing system module to allow use of 1.6MB
discs.
Alternatively, has anyone got a high-density drive upgrade kit or interface
Podule for this dinosaur? I'm not interested in a "mini podule" (the type
that fits internally) unless it's got an IDE interface on it, too.
Finally, I need some RAM for my A3010 - anyone got some spare? A 2MB or 4MB
upgrade would be perfect. These are basically small modules that fit under
the keyboard. IIRC the original Acorn 4MB kit was just a pack of four RAM
chips and an instruction sheet. Oh, and the A3000 is also begging for a 1MB
to 4MB upgrade if anyone's got one (it's got 2MB fitted ATM)
Thanks.
--
Phil.
philpem(a)dsl.pipex.com
http://www.philpem.dsl.pipex.com/
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