06-01-2012, 06:53 PM
Update2: I got it.
Both routines do the same. The one on the left is smaller (more optimized), but there is a chance that after the ADD A, 32 it returns with the RET C. Since the fill routine uses the Carry flag to signal out of screen, this should never happen. So the routine is rewritten like the one on the left. :mrgreen:
So now I'm ready to integrate this into the ZX BASIC library
Both routines do the same. The one on the left is smaller (more optimized), but there is a chance that after the ADD A, 32 it returns with the RET C. Since the fill routine uses the Carry flag to signal out of screen, this should never happen. So the routine is rewritten like the one on the left. :mrgreen:
So now I'm ready to integrate this into the ZX BASIC library