Цитата:
The PPU (Picture Processing Unit), more specifically known as Ricoh RP2C02 (NTSC version) / RP2C07 (PAL version), is the microprocessor in the Nintendo Entertainment System responsible for generating video signals from graphic data stored in memory.
The chip is known for its effective use of memory, using very little memory to store graphical data. It was rather advanced for its time when the Famicom (Japanese version of the Nintendo Entertainment System) was released, sporting full sprite support, movable backgrounds, and many colors on screen at the same time. To compete with other video game systems, like the graphically superior Sega Master System, Nintendo also extended the PPU's technical capabilities through the use of mappers, which were placed on the game cartridge. The mappers added more memory or could bank switch data into the PPU's address space, making it possible to create more advanced graphics, using more colors and bigger tile sets.
не забываем про регион.
Цитата:
Arcade versions of the NES's hardware use special variations of the PPU: the PlayChoice-10 uses the RP2C03, while two variants of the Nintendo Vs. Series hardware use the RP2C04 and the RP2C05. All run at 5.37 MHz and output RGB video at NTSC frequencies. The Nintendo Vs. Series versions are modified to prevent easy ROM swapping (the 2C04 came in 4 variations with scrambled palettes, and the 2C05 came in 5 variations with two I/O registers switched and a third register returning a specific value in its normally unused lower bits).[5]
RP2C04 and the RP2C05 вот они ргб ппухи.. но видео ргб выход в нтсц режиме.