Sega CD

System Sega CD
CPU 12.5MHz 16-bit Motorola 68000
Memory 6 Mbit of RAM are allocated to data for programs, pictures, and sounds; 512 Kbit to PCM waveform memory; 128 Kbit to CD-ROM data cache memory; and an additional 64 Kbit are allocated as backup memory
Graphics Custom ASIC with the following features:
  • Biaxial Rotation, Scaling, Zoom
  • Number of Simultaneous Colors On-Screen (Gameplay): 64 out of 512 color pallette
  • Supported Display Resolutions: 320 x 224 Pixels and 256 x 224 Pixels
  • Number of Simultaneous Colors On-Screen (Full-Motion Video): 128 to 256 (Cinepak and TruVideo Modes)
  • Video Size: From 1/4 to Full-Screen
  • Advanced compression scheme
  • Software-based upgrade
Sound Ricoh RF5C164 Chip @ 12 MHz Max
  • PCM Sound Source: Stereo, 8 Channels
  • Sampling Wavelength: 32 KHz Max (44.1 KHz Max for CDDA)
  • 16-Bit D/A Converter
  • 8x Internal Over-Sampling Digital Filter
  • Supported Audio Formats: ISO-9660 Mode 1, Red Book (CDDA), CD+G
  • Sampling frequency: 44.1KHz or 48KHz, selectable
Description (from Wikipedia)

Relased October 15, 1992, the Sega CD is a CD-ROM accessory for the Sega Genesis video game console designed and produced by Sega as part of the fourth generation of video game consoles. The add-on was released on December 12, 1991 in Japan, October 15, 1992 in North America, and 1993 in Europe. The Sega CD lets the user play CD-based games and adds extra hardware functionality, such as a faster central processing unit and graphic enhancements. It can also play audio CDs and CD+G discs.