English Amiga Board - View Single Post - Blitter poly-line draw & filling

Leffmann · 28 March 2014, 22:21

How are you calculating the A shift value and the C pointer? I'm guessing that's where your error is.

The A shift value must be set to X1%16, and the C pointer must point to the word in memory where the first pixel, (X1, Y1), is plotted.

28 March 2014, 22:21	#2
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	How are you calculating the A shift value and the C pointer? I'm guessing that's where your error is. The A shift value must be set to X1%16, and the C pointer must point to the word in memory where the first pixel, (X1, Y1), is plotted.