Re: [cc65] Macro/asm problem

From: Shawn Jefferson; on Date: Friday, May 28, 2004, at 10:40 AM

> --- stefan <carlosofcascade@gmx.net> wrote:
> > i would suggest something like this:
> > #define WAITSUSHI  \
> >     do{ \
> >     asm ("bit $fc92"); \
> >     }while(<0); \
>
> The compiler doesn't like the while(<0) line. 
> "Expression expected."

But, he had the right idea:  compare it to zero.

#define WAITSUZY do ; while (*(signed char*)0xfc92 < 0);

The optimizer will produce what you want:

Lxxxx: ldx $fc92
       bmi Lxxxx

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