Anomie's Register Doc
@Dreamcast
Published in
SNES
· 21 Apr 2024
... tracted, add/subtract that main-screen pixel (the original value before math). What happens to the subscreen pixel at the left edge of the screen is unknown. This is really important with color subtraction: normally, if you have a block of cyan (#00ffff) on main and a block of magenta (#ff00ff) on sub, subtraction would give a block of green. Hires math will give you a block of alternating green and red, which will probably appear yellow on your TV. If you've set $2131 bit 6 and this block is s ...
