Sega Mega Drive/Board Revisions
From Sonic Retro
Revision as of 21:32, 15 January 2010 by GerbilSoft (talk | contribs) (→VA2: USA, High Definition Graphics: Chip descriptions.)
Revision as of 21:32, 15 January 2010 by GerbilSoft (talk | contribs) (→VA2: USA, High Definition Graphics: Chip descriptions.)
Model 1
VA2: USA, High Definition Graphics
[*]M68K CPU: Signetics SCN68000C8N64 [*]M68K memory: 2x TC51832SPL-12 (32Kx8 PSRAM, 120 ns) [*]Z80 CPU: Zilog Z8040004PSC [*]Z80 memory: NEC D4168C-15 (8Kx8 XRAM, 150 ns) [*]I/O chips: Sega 315-5308, Sega 315-5309, Sega 315-5345 (DIP-16) [*]VDP: Sega 315-5313 (YM-7101) [*]Video RAM: 2x [NUMBER PLEASE] (32x8 DRAM) [*]Headphone amp: Sony CXA1034 [*]Video encoder: Sony CXA1145 [*]FM synthesizer: Yamaha YM2612
