Re: [Amforth-devel] Amforth on ATmega644P

[Robert L. <xu...@xu...>]

Erich-

Thank you for your response.  My patch to AVRA was somewhat slapdash and as
such, I tend to suspect that AVRA is doing something wrong.  I'll try
assembling with AVRStudio's assembler, see if that gets me anywhere.  It's
also possible (even likely) there was a change between 3.3 and 3.6 that is
causing this.  Would you mind sending me the template.asm and so forth you
used to build 3.3?  It would be educational, if nothing else.

Thanks again.


On Tue, Jan 5, 2010 at 9:03 AM, Erich Waelde <ew....@na...> wrote:

> Hello Robert,
>
> > Has anyone successfully gotten amforth working on an ATmega644P?  I
> > tried to do this today, and immediately ran afoul of the fact that
> > avra (AVR assembler, on Linux) doesn't support the ATmega644P.
>
> about a year ago, I experimented with atmega-644p controllers, too.
> This was with amforth 3.3
>
> I did *not* patch avra. And if I remember correctly, the include files
> from AVRStudio are of a newer format, and avra didn't like them. So I went
> and installed wine and the assembler from avrstudio. Yapp, not the
> best solution, but it worked for the moment.
>
> This results in the following call to produce the hex files:
>
> wine ~/wine/AvrAssembler2/avrasm2.exe -I ~/Forth/amforth/releases/3.3/core
> \
>  -I . -fI  -l main.lst -m main.map -e main.eep.hex main.asm
>
> So for the heck of it, I just grabbed a 644P and powered it up.
> The hex file loads and the controller does talk with me:
> > ver
> amforth 3.3 ATmega644P ok
> > .res
> free FLASH cells      25207
> free RAM cells        3795
> used EEPROM cells     42
> used data stack cells 0
> used return stack     10
> free return stack     70
>  ok
> > : hi ." hello, world!" cr ;
>  ok
> > hi
> hello, world!
>  ok
> >
>
> So far so good. How did I make it work??? Hm.
> . wine + avrassembler2 I mentioned above.
> . Fuse bits:
>  # external crystal at 11.0592 MHz
>  LFUSE=0xee
>  HFUSE=0x89
> . there are 31 interrupts now, you found that.
>
> It is certainly possible to dig out the differences to the old
> version 3.3, however, it would take some time.
>
> I could obviously send you my files, if you are interested
> in "code archeaology" :-)  I have not used the 644p any more yet.
>
> Cheers,
> Erich
>
>
> ------------------------------------------------------------------------------
> This SF.Net email is sponsored by the Verizon Developer Community
> Take advantage of Verizon's best-in-class app development support
> A streamlined, 14 day to market process makes app distribution fast and
> easy
> Join now and get one step closer to millions of Verizon customers
> http://p.sf.net/sfu/verizon-dev2dev
> _______________________________________________
> Amforth-devel mailing list
> Amf...@li...
> https://lists.sourceforge.net/lists/listinfo/amforth-devel
>