Re: [Amforth] newby question mega 2560

[pito <pi...@vo...>]

Andrew - may recommendation to you is atmega1284p:
dil40 or smd, 128kB flash, 4kB eeprom, 16kB ram. No issues with
amforth. P.

----- PŮVODNÍ ZPRÁVA -----
Od: "Andrew Holt" <and...@4a...>
Komu: "Everything around amforth"
<amf...@li...>
Předmět: Re: [Amforth] newby question mega 2560
Datum: 19.6.2011 - 15:08:51

> 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
> =============================
> 
> 
> 
> 
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