I don't remember this clearly at all, but I seem to remember a part from Intel
that did have the same pinout as the WD1771. Apparently that wasn't it.
Dick
----- Original Message -----
From: "Tony Duell" <ard_at_p850ug1.demon.co.uk>
To: <classiccmp_at_classiccmp.org>
Sent: Saturday, October 06, 2001 2:18 PM
Subject: Re: 6502 BASIC or Assembler and Intel 8271/WDC 1770 info req'd
> > only thing you have to do is handle the clock differences for 8", 5-/4", and
> > 3-1/2" drives. IF you leave the 8" drives out of the equation, and I see no
> > reason to include them, it should be dirt-simple.
>
> 8" drives are no problem. It's the same data rate (and thus clock Xtal)
> as the HD modes for 5.25" and 3.5" drives. The only time you have to use
> the second Xtal is if you use a HD 5.25" drive and want to be able to
> read normal density disks in it.
>
> >
> > I may be confused about this, but wasn't the 8271 just a rebadged WD1771?
If
>
> They seem to be totally different devices. OK, they're both disk
> controllers, and they're both single-density only, but there the
> similarlity ends...
>
> -tony
>
>
Received on Sat Oct 06 2001 - 16:59:57 BST