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Body

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Product highlights

Verified attributes, grouped for quick scanning.

Weight1.09 lb (495 g)110 × 210 × 100 mm (4.3 × 8.3 × 3.9 in)

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SegaCD

Product data

28 attributes, grouped for quick scanning. Spot a wrong value? Hit the next to it.

Refresh rate: 60 Hz (NTSC), 50 Hz (PAL)
Resolutions: 320×224, 320×240,[16] 320×204 (direct color),[17] 320×408 (8bpp)[18]

Internal processor cache: 5 KB
RAM Clear Hardware: 512 bytes (used for flat-shaded polygons)[22]
System RAM: 648.5–1368.5 KB total, 512 KB (4 MBit) additional RAM to Mega Drive or Sega CD memory[14]
Sound chip: QSound PWM @ 23.01136 MHz (NTSC), 22.801467 MHz (PAL)[36]
Overlay/Underlay graphics processors: Mega Drive VDP — 13.423294 MHz (NTSC), 13.300856 MHz (PAL), 8/16-bit data bus
Framebuffer fillrate: 18.181818 MPixels/s (16bpp), 36.363636 MPixels/s (8bpp)[18][26]
CPU co-processors: Overlay/Underlay processors
Main CPU: Twin Hitachi SH-2 (SH7095) 32-bit RISC processors

SH-2 Slave: 32X (US)
SH-2 Master: 32X (US)
68000: 32X (US)
BIOS Version: Machine
BIOS Revisions: BIOS Version | Machine | Download
I/O: Same as Mega Drive; 32X upgradable; can upgrade the 32X
Cartridge: Compatible with all Mega Drive models, JVC Wondermega can store save game/score information.
Cartridge ROM: 4–8 MB[39]
Overlay/Underlay Sega CD ASIC planes: Enhanced Mega Drive VDP planes, enhanced FMV plane
Overlay/Underlay Mega Drive VDP planes: 512–1536 color palette, 61–512 colors on screen
Color palette: 32,768 colors[15]
Features: 3D polygon graphics, Gouraud shading, texture mapping, more sprites, quicker animation[14]
System master clock rate: 53.693175 MHz (NTSC), 53.203424 MHz (PAL)[1]

Internal processor cache bandwidth: SH-2: 184.09088 MB/s (92.04544 MB/s per SH-2, 32-bit per SH-2)
System RAM bandwidth: 118.749992 MB/s (NTSC), 118.330206 MB/s (PAL), 3 data buses, 48-bit data bus width[13][21]
Framebuffer bandwidth: 72.727272 MB/s (36.363636 MB/s per framebuffer)[20][21]

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