Anomie's Register Doc
@Dreamcast
Published in
SNES
· 21 Apr 2024
... 2Xx2X block of half-pixels. So if you set $2106 to $0F ("1x1" blocks), the even half-pixels will be expanded to cover the odd half-pixels. $1F would cover the next even-and-odd pixel over as well. An example: put a single red pixel at line #1 pixel #0 of Mode 5 BG1, and a single blue pixel in the same place on BG2. Enable BG1 on main and BG2 on sub, you'll see the blue pixel only. Set $2106=$03, and you'll suddenly see both the blue and red pixels. Set $2106=$13, and you'll see "BRBR" ...