Changes
/* ADVN */
* When the vram address is calculated from dx and dy, dx and dy are masked before use.
This means that transfer wraps within the same line and column. i.e. if drawing in reverse and overlapping x=0, then pixels will wrap to 256-x on the same line and if overlapping x=256 then pixels will wrap to 0.
=== LMMV ==
* In bitmap mode, R48 is used for VRAM0 and R49 is used for VRAM1. For example, if R48 is set to #34 and R49 is set to #12, and 8bpp mode is used, x=0 will be set to #34, x=1 will be set to #12, x=2 will be set to #34 etc. This is why the documentation states that for 8bpp, 4bpp and 2bpp modes you should repeat the pixels through R48 and R49 to ensure a consistent fill value.
=== ADVN ===
