Date : Sat, 25 Oct 2008 13:06:16 +0100
From : mfirth@... (Michael Firth)
Subject: A500 development ROMs
----- Original Message -----
From: "Jonathan Graham Harston" <jgh@...>
To: <bbc-micro@...>
Sent: Saturday, October 25, 2008 12:21 AM
Subject: Re: [BBC-Micro] A500 development ROMs
>> Message-ID: <49011CBF.5080200@...>
>
> Jules Richardson wrote:
>> The ARM Eval Kit also has Brazil in ROM (albeit only 16KB), as did the
>> M4 -
>
> Are you sure? My ROM dumps from ARM Eval kits don't mention Brazil
> anywhere. See <http://mdfs.net/Software/Tube/ARM>.
>
> "ARM Second Processor", "Executive", "Supervisor" appear, but not
> "Bazil".
>
I think there were both Brazil and non-Brazil ROMs for the ARM Eval. This
screen shot:
http://www.houseofmabel.com/puters/ARMDev/small/arm1sshot.jpg
(from http://www.houseofmabel.com/puters/ARMDev/index.html) definitely shows
an ARM Eval
running Brazil, but the ROM that's with the emulation in BeebEm is
definitely not a Brazil based one:
http://www.firths.org/bbc/BeebEmARMEval.jpg
>> Although I don't think they *had* to have a TUBE link present - the ones
> I've
>> seen have a pretty enormous keyboard to them. (Unless you're talking
>> about
> the
>> A500 copro, not the A500 machine?? Never have figured out why Acorn used
>> the
>
> The A500 machine with Tube podule. The machine refered to in Acorn
> history as "we carefully disconnected the umbilical, rebooted with
> fingers crossed, and it worked!".
>
> Maybe the two have the same name because they are the same thing -
> an Archimedes motherboard with ARM, VIDC, MEMC and socket for Tube
> podule. The A500 machine being inside a metal case. All the photos
> I've seen suggest this.
>
>> same system designation for two completely different boards!)
>
> Can somebody point to seperate pictures showing them?
>
The motherboard of the standalone A500 is here (from
http://acorn.chriswhy.co.uk/Computers/A500.html):
http://acorn.chriswhy.co.uk/Pics/A500D.JPG
and the A500 Co-Pro is here:
http://bbcmicro.net/old-8bs/see/RISCcopro.jpg
As you can see, they are very different boards.
Regards
Michael