This Demo uses graphics from Super Mario Bros 3 All Stars, using 4 layers and 2 test sprites.
System VRAM:
64KB BG GFX
32KB BG Map
64KB Sprite GFX
1.5KB Sprite Attribute
8KB Palette
This is the full BG map used in this demo 512 x 2048 pixels
https://drive.google.com/file/d/1ZV5K...