+ transparency) Sprites Sizes: 16×16, 16×32, 32×16, 32×32, 32×64 Simultaneously displayable: 64 (maximum of 8–16 per line, depending on sprite width) Each sprite can use up to 15 unique colors (one color must be reserved as transparent) via one of the 16 available sprite palettes. The HuC6270A VDC can display one sprite layer. Sprites could be placed either in front of or behind background tiles. Tiles Each 8×8-pixel background tile can use up to 16 unique colors via one of the 16 available background palettes. The first color entry of each background palette must be the same across all background palettes. The HuC6270A VDC can display one background layer. Memory Work RAM: 8 KB Video RAM: 64 KB Additional 192 KB of built in Memory (System 3.0) Sound Six wavetable synthesis audio channels, programmable through the CPU One ADPCM channel Compact Disc Digital Audio Software media TurboChip (called HuCard in Japan), a thin, card-like ROM cartridge. Published games consumed up to 20 Mb (2.5 MB). CD-ROM² (pronounced "CD-ROM-ROM" in Japan), a proprietary CD-ROM-based media. Unlike the TurboGrafx-CD add-on, the TurboDuo could play standard CD-ROM² discs, as well Super CD-ROM² discs, without the need of a System Card. Early CD-ROM² games released in North America were branded as TurboGrafx-CD discs, but this relabeling fell into disuse after the launch of the TurboDuo in favor of keeping the CD-ROM² and Super CD-ROM² labeling used in Japan. See also List of PC Engine emulators List of TurboGrafx-16 games/PC Engine games References External links PC-Engine technical documentation for programmers at MagicEngine.com Frozen Utopia, a website for PC-Engine game developers Computer-related introductions in 1992 CD-ROM-based consoles Fourth-generation video game consoles NEC consoles Home video game consoles TurboGrafx-16 65xx-based video game consoles