Difference between revisions of "Sega Mega Drive/Hardware revisions"
From Sega Retro
| Line 1: | Line 1: | ||
| − | =Model 1= | + | ==Model 1== |
| + | ===VA0 (PAL)=== | ||
| + | [[File:PC BD MD2 VA0 PAL.jpg|320px]] | ||
| + | ===VA1=== | ||
| − | ==VA2 | + | ===VA2 (USA, High Definition Graphics)=== |
[[Image:MD1_IC_BD_M5_USA_VA2.jpg|320px]] | [[Image:MD1_IC_BD_M5_USA_VA2.jpg|320px]] | ||
| Line 15: | Line 18: | ||
*Video encoder: Sony CXA1145 | *Video encoder: Sony CXA1145 | ||
*FM synthesizer: Yamaha YM2612 | *FM synthesizer: Yamaha YM2612 | ||
| + | ===VA3=== | ||
| − | ==VA6 | + | ===VA4 (PAL)=== |
| + | [[File:IC BD M5 PAL VA4.jpg|320px]] | ||
| + | ===VA5=== | ||
| + | |||
| + | ===VA6 (USA, High Definition Graphics)=== | ||
[[Image:MD1_IC_BD_M5_USA_VA6.jpg|320px]] | [[Image:MD1_IC_BD_M5_USA_VA6.jpg|320px]] | ||
| Line 31: | Line 39: | ||
*FM synthesizer: Yamaha YM2612 | *FM synthesizer: Yamaha YM2612 | ||
| − | ==VA6 | + | ===VA6 (PAL)=== |
[[Image:MD1_IC_BD_M5_PAL_VA6.jpg|320px]] | [[Image:MD1_IC_BD_M5_PAL_VA6.jpg|320px]] | ||
| − | ==VA7 | + | ===VA6.8=== |
| + | |||
| + | ===VA7 (USA)=== | ||
[[File:PC BD M5 USA VA7.jpg|320px]] | [[File:PC BD M5 USA VA7.jpg|320px]] | ||
| − | =Model 2= | + | ==Model 2== |
| + | ===VA0=== | ||
| + | |||
| + | ===VA1=== | ||
| − | ==VA1.8 | + | ===VA1.8 (USA)=== |
[[Image:PC_BD_MD2_VA1.8_USA.JPG|320px]] | [[Image:PC_BD_MD2_VA1.8_USA.JPG|320px]] | ||
| − | ==VA1.8 | + | ===VA1.8 (PAL)=== |
[[File:PC BD MD2 VA1.8 PAL.jpg|320px]] | [[File:PC BD MD2 VA1.8 PAL.jpg|320px]] | ||
| − | ==VA1.8 | + | ===VA1.8 (Asia)=== |
[[Image:PC_BD_MD2_VA1.8_ASIA.jpg|320px]] | [[Image:PC_BD_MD2_VA1.8_ASIA.jpg|320px]] | ||
| Line 54: | Line 67: | ||
*Main ASIC: Sega 315-5660 | *Main ASIC: Sega 315-5660 | ||
| − | =Model 3= | + | ===VA1.8=== |
| + | |||
| + | ===VA2.3=== | ||
| + | |||
| + | ===VA3=== | ||
| + | |||
| + | ===VA4=== | ||
| + | |||
| + | |||
| + | ==Model 3== | ||
| − | ==VA2 | + | ===VA2 (USA)=== |
[[Image:PC_BD_MD3_VA2_USA.jpg|320px]] | [[Image:PC_BD_MD3_VA2_USA.jpg|320px]] | ||
Revision as of 11:52, 26 April 2012
Model 1
VA0 (PAL)
VA1
VA2 (USA, High Definition Graphics)
Components:
- M68K CPU: Signetics SCN68000C8N64
- M68K memory: 2x TC51832SPL-12 (32Kx8 PSRAM, 120 ns)
- Z80 CPU: Zilog Z0840004PSC
- 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 (Yamaha YM7101)
- Video RAM: 2x [NUMBER PLEASE] (64Kx4 DRAM)
- Headphone amp: Sony CXA1034
- Video encoder: Sony CXA1145
- FM synthesizer: Yamaha YM2612
VA3
VA4 (PAL)
VA5
VA6 (USA, High Definition Graphics)
Components:
- M68K CPU: Motorola MC68000P8
- M68K memory: 2x HM652568LSP-10 (32Kx8 PSRAM, 100 ns)
- Z80 CPU: Zilog Z0840004PSC
- Z80 memory: MB8464A-10 (8Kx8 SRAM, 100 ns)
- I/O chip: Sega 315-5433
- VDP: Sega 315-5313 (Yamaha YM7101)
- Video RAM: 2x [NUMBER PLEASE] (64Kx4 DRAM)
- Headphone amp: Sony CXA1034
- Video encoder: Sony CXA1145P
- FM synthesizer: Yamaha YM2612
VA6 (PAL)
VA6.8
VA7 (USA)
Model 2
VA0
VA1
VA1.8 (USA)
VA1.8 (PAL)
VA1.8 (Asia)
Components:
- M68K CPU: Motorola MC68HC000FN8
- M68K memory: Toshiba TC511632FL-10 (32Kx16 PSRAM, 100 ns)
- Z80 CPU: Toshiba 84C00AU-6
- Z80 memory: [NUMBER PLEASE] (8Kx8 SRAM)
- Main ASIC: Sega 315-5660
VA1.8
VA2.3
VA3
VA4
Model 3
VA2 (USA)
Components:
- Main ASIC: Sega 315-6123 (contains M68K, Z80, VDP, YM2612, and probably some other components.)
- Memory (right of main ASIC): NEC D4502161G5 (128Kx16 SDRAM)
- Oscillator (bottom-right of main ASIC): SG53 PTR S 53.6931M
- Video Encoder (bottom-left of main ASIC): Sony CXA1645M
- Amplifier (left of main ASIC): TI 85AFTRF LM324