Date   : Sun, 22 May 2005 18:15:33 +0100
From   : Philip Pemberton <philpem@...>
Subject: Re: 8-bit IDE i/f debugging

In message <4d6f1f9ba6info@...>
          Sprow <info@...> wrote:

> As reported a few weeks back the 16 bit hardware is up and running, but by
> the name of this thread suggests that JGH didn't have time to build some
> stock before Wakefield (since the 16 bit interface also works in 8 bit mode
> anyway).

Do you honestly know anyone that could fill a 2GB hard drive with BASIC and
6502ASM code? Even in 8-bit mode, that's still 1GB.

> I'm a little bemused that effort was spent on an 8 bit layout in the
> interim, it's kind of like saying "oh, my car didn't start, so I'll build
> myself a moped while I wait for the AA to arrive". He he!

Heh :)
The 8-bit layout seems a little buggy too - the original layout (which I
used) had /CS3Fx wired low instead of high. The layout that's on there now
(which I used to patch my controller) seems to be OK.

> The ADFS patch needs work though,

Works fine here, but it's a bit finicky. If the current drive is :4 (floppy),
then "*CAT :0" reads from the floppy instead of the IDE hard drive. I wonder
if HADFS is any better.

Later.
-- 
Phil.                              | Acorn Risc PC600 Mk3, SA202, 64MB, 6GB,
philpem@...                        | ViewFinder, 10BaseT Ethernet, 2-slice,
http://www.philpem.me.uk/          | 48xCD, ARCINv6c IDE, SCSI
... DANGER! DANGER! Computer Store Ahead, Hide Wallet.