Difference between revisions of "Sega Mega Drive/Hardware revisions"
From Sega Retro
old>GerbilSoft (→VA6: USA, High Definition Graphics: lol copypasta) |
old>GerbilSoft (Fixed VRAM organization.) |
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| Line 11: | Line 11: | ||
*I/O chips: Sega 315-5308, Sega 315-5309, Sega 315-5345 (DIP-16) | *I/O chips: Sega 315-5308, Sega 315-5309, Sega 315-5345 (DIP-16) | ||
*VDP: Sega 315-5313 (YM-7101) | *VDP: Sega 315-5313 (YM-7101) | ||
| − | *Video RAM: 2x [NUMBER PLEASE] ( | + | *Video RAM: 2x [NUMBER PLEASE] (64Kx4 DRAM) |
*Headphone amp: Sony CXA1034 | *Headphone amp: Sony CXA1034 | ||
*Video encoder: Sony CXA1145 | *Video encoder: Sony CXA1145 | ||
| Line 26: | Line 26: | ||
*I/O chip: Sega 315-5433 | *I/O chip: Sega 315-5433 | ||
*VDP: Sega 315-5313 (YM-7101) | *VDP: Sega 315-5313 (YM-7101) | ||
| − | *Video RAM: 2x [NUMBER PLEASE] ( | + | *Video RAM: 2x [NUMBER PLEASE] (64Kx4 DRAM) |
*Headphone amp: Sony CXA1034 | *Headphone amp: Sony CXA1034 | ||
*Video encoder: Sony CXA1145P | *Video encoder: Sony CXA1145P | ||
Revision as of 22:14, 15 January 2010
Model 1
VA2: USA, High Definition Graphics
Components:
- 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] (64Kx4 DRAM)
- Headphone amp: Sony CXA1034
- Video encoder: Sony CXA1145
- FM synthesizer: Yamaha YM2612
VA6: USA, High Definition Graphics
Components:
- M68K CPU: Motorola MC68000P8
- M68K memory: 2x HM652568LSP-10 (32Kx8 PSRAM, 100 ns)
- Z80 CPU: Zilog Z8040004PSC
- Z80 memory: MB8464A-10 (8Kx8 SRAM, 100 ns)
- I/O chip: Sega 315-5433
- VDP: Sega 315-5313 (YM-7101)
- Video RAM: 2x [NUMBER PLEASE] (64Kx4 DRAM)
- Headphone amp: Sony CXA1034
- Video encoder: Sony CXA1145P
- FM synthesizer: Yamaha YM2612