Re: [Amforth] newby question mega 2560

[Andrew H. <and...@4a...>]

Hi,

I haven't bought any hardware, yet.  So any suggestions would be welcome.

The Arduino boards look interesting because of the 'standard' board size and availability of add-ons.

Regards,
Andrew

On 19 Jun 2011, at 12:21, Matthias Trute wrote:

> Hi Andrew,
> 
>> The list of arduino boards 'supported'
> 
> a general remark: supported means: the code
> can be assembled and the controller
> produces a command prompt (at least sometimes and
> for at least one release). If anything goes
> wrong, sorry.
> 
>> include the Mega with the
>> ATMega 1280 part.  My question is waht are the differences between
>> the 1280 and 2560  ?
> 
> The major difference is that the 256x devices use a 3byte
> addressing schema for the flash. In contrast amforth uses
> a 2byte address (remember: 16bit forth).
> 
> Some time ago I adapted amforth to run on such a big
> iron, but could not test it for a while. It should work
> however.., You will have no advantage over a 128x
> device: half of the flash memory cannot be used
> currently and there is a small speed penalty due to
> higher overhead in the low level routines.
> 
> In any case I'm very interested if you could test it
> and report any success/failure.
> 
> Matthias
> 
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=============================
Andrew Holt

Email: and...@4a...

De Omnibus Dubitandum
=============================