[sdiy] uC with mul

[Theo]

Paul,
Have to agree about the large MEGA part.
In the end Atmel gave what they had promised,
too bad it took them 2 years longer than they first promised :(
My Step One sequencer was designed around the improved mega specs.
First and last time I put a "soon to be released" chip into a product. :((

ARM uC are available from many brands, not just Atmel.
Don't know if it has been surpassed, but for a long time the
Intel StrongARM was the absolute top.

The Atmel ARM starter kit is actually quite affordable,
only problem is that it comes with limited "evaluation" software :(
GNU is the only affordable workaround I know about.

On the other hand a nice ARM development platform is the
Acorn Argimedes (sp?).
Which comes a the price of a second hand '80s home computer.
Actually its appearance also resembles a '80s home computer,
mmm, wonder why this would be <lol>
Downside; The ARM in the Argimedes doesn't support the Thumb
instruction set.


Cheers,
Theo



From: Paul Maddox <Paul.Maddox at wavesynth.com>

> Theo,
>
> > That's a rather large ROM.
> > Considering the added costs it might be cheaper to migrate to a
> > MegaAVR with mult or move to a ARM part right away.
>
> The Mega is a chip I have been waiting for from Atmel for about a year (I
> have had sample for a couple of months)..
> Its fast, has In system programming, JTAG and a huge chunk of memory...
> For me, its pretty much an ideal embedded CPU..
>
> The ARM stuff is a tottally different ballgame ( I have an Atmel EB63)...
> 32Bit for a start, something like 4M of address space though there is no
> discinttion bewteen code and data address bus's (non harvard
architecure)...
> The ARM is a REAL number cruncher... if you need to do a lot of BIG maths
> quickly this is the chip for you..
> Thoguh watch out, the ARM SDK is 1000UKP (and thats the lite version!)
> also the chips are expensive..
>
> The ARM and Mega are two different processors for two different types of
> applications..
>
> Paul
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