2016
nes_vrom_sprites_mario3.png (PNG Image, 1184 × 698 pixels)
all SMB3 sprites, one ROM page at a time
2015
2013
PPU scrolling - Nesdev wiki
Games scroll to show an area much larger than the 256x240 pixel screen [...] Write the starting page (high order bit of X and Y) to bits 0 and 1 of PPUCTRL ($2000) [...] you write that to VRAM before you set the scroll, as seen in the animation below.
1
(7 marks)