flashforth-devel

[Flashforth-devel] FFatmega

[Joe E. <jo...@wh...>]

This afternoon I fired up FFatmega on an Arduino Duemilanove 328p.
Works really great, thanks Mike!

I went into config.inc and added the Mega 2560.def then added a PFLASH
conditional init to FlashForth.asm. Still does not asmemble. Lots of
"rel branch out of range" and one or two more "unresolved symbols".
Time permiting, I'll do what I can to get this going but it would be
nice to have a config for the 2560.

I have an Arduino 2560 R3 that I've been using for some time and would
like very much to test Flash Forth on it.

ciao,

--
joe

Re: [Flashforth-devel] FFatmega

[Mikael N. <mik...@pp...>]

On 12.1.2013 3:29, Joe Ennis wrote:
> I have an Arduino 2560 R3 that I've been using for some time and would
> like very much to test Flash Forth on it.
>

Hi Joe,
I think going over the 128 Kbyte limit will require a bigger overhaul.
The Atmega registers can nicely address only 64 Kwords of flash.
To go above there are some page bits that need to be  considered.

Maybe the easiest thing would be to put FF completely in the
upper 64 Kword flash page. I assume the boot area is in the upper page.

Cheers /Mike

Re: [Flashforth-devel] FFatmega

[Joe E. <jo...@wh...>]

On Sat, 12 Jan 2013 15:16:48 +0200
Mikael Nordman <mik...@pp...> wrote:

> On 12.1.2013 3:29, Joe Ennis wrote:
> > I have an Arduino 2560 R3 that I've been using for some time and
> > would like very much to test Flash Forth on it.
> >
> 
> Hi Joe,
> I think going over the 128 Kbyte limit will require a bigger overhaul.
> The Atmega registers can nicely address only 64 Kwords of flash.
> To go above there are some page bits that need to be  considered.
> 
> Maybe the easiest thing would be to put FF completely in the
> upper 64 Kword flash page. I assume the boot area is in the upper
> page.
> 
> Cheers /Mike

Of course, guess I wasn't sober enough to catch that on the first pass.
And yes, boot loader is in the high page. Time permitting, I'll dig
into it and see what I can get done.

I built a balancing two wheeled bot using the 2560 written using the
Arduino IDE. It would be a lot of work writing all the library
equivalents but, if we get enough snow this winter, it would surely help
with the cabin fever.

br,

--
joe