[Amforth-devel] [Solved] Possible problem in words/greater.asm

[Erich W. <ew....@na...>]

Just for the records:

this was a classic "layer 8" problem:

: > ~end ; \ cancel rs485 echo loops  <-- bad idea!

:-/
Erich

On 06/02/2010 11:34 AM, Erich Waelde wrote:
> Hello,
>
> I was wondering, why my simple code would stall the controller.
> Turns out that '<' and'>' behave differently, or more
> precisely, '>' (words/greater.asm) seems broken. This is in
> releases/3.8, but md5sum suggests, this file is unchanged in
>
> e7c30a91806871702d10a0fe4a2f8b28  Forth/amforth/releases/3.3/core/words/greater.asm
> e7c30a91806871702d10a0fe4a2f8b28  Forth/amforth/releases/3.4/core/words/greater.asm
> e7c30a91806871702d10a0fe4a2f8b28  Forth/amforth/releases/3.5/core/words/greater.asm
> e7c30a91806871702d10a0fe4a2f8b28  Forth/amforth/releases/3.6/core/words/greater.asm
> e7c30a91806871702d10a0fe4a2f8b28  Forth/amforth/releases/3.7/core/words/greater.asm
> e7c30a91806871702d10a0fe4a2f8b28  Forth/amforth/releases/3.8/core/words/greater.asm
> e7c30a91806871702d10a0fe4a2f8b28  Forth/amforth/releases/3.9/core/words/greater.asm
> e7c30a91806871702d10a0fe4a2f8b28  Forth/amforth/trunk/core/words/greater.asm
>
> However, this could be a sideeffect from some other change ...
>
>
>   >  ver
> amforth 3.8 ATmega32 ok
>   >  : f1  1 >  if ." gt" else ." not gt" then cr ;
>    ok
>   >  : f2  1 <  if ." lt" else ." not lt" then cr ;
>    ok
>   >  4 f2
> not lt
>    ok
>   >  4 f1
> ��獊�����<-- controller stalls here
>
>
> Cheers,
> Erich
>
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