Date   : Thu, 16 Dec 2010 20:55:42 -0600
From   : jules.richardson99@... (Jules Richardson)
Subject: Harddisc fakery using a microcontroller

Alan Williams wrote:
>> Is there any documentation on what exactly was different? 
>> I've got both 260s and 540s, and apart from the front badge, 
>> I can't see any differences on the main board?
> 
> I agree.  I am not aware of any other differences.  A540 certainly
> functions perfectly well with RISC iX.

Wasn't there something funny about the memory timing needed to support the 8MB 
that the R260 came with (as opposed to 4MB on the A540)? Might just be a brain 
fart, but I think there may have been something about a resistor mod to the 
A540 board to get it to work with that much RAM - and it *can* be done 
without, but the machine's left very picky about the RAM it'll work with (to 
the extent that an unmodified 8MB A540 might sometimes boot and sometimes not)

cheers

Jules