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Sega CD

1992–1996 · console add-on

Specifications

Cpu: Motorola 68000, 12.5 MHz co-processor (works alongside the Genesis's own 68000 at 7.6 MHz)
Ram: max: Fixed, no official expansion · base: 512 KB program RAM, 256 KB word RAM, 64 Kbit backup RAM, 512 Kbit PCM sample RAM
Media: CD-ROM (plugs into the Genesis cartridge slot and expansion port; Genesis cartridge slot remains usable for backward-compatible titles)
Output: Shares the host Genesis's video and audio output, adds CD-quality Redbook audio playback
Release Price: $299 (Model 1, 1992); $229 (Model 2, 1993)

Revisions

Sega CD Model 11992 US launch, side-mounted, motorized tray, matches the Genesis Model 1's shape

Sega CD Model 21993, smaller redesign that sits underneath a Genesis Model 2, non-motorized tray, bundled with Sewer Shark

Mega-CDJapan and PAL Europe release name

No upgrade data for this model yet.