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[[File:Genesis_pal_model1_M5.jpg|thumb|150px|PAL model == Model 1 M5]]==
Board label: === VA1 [IC BD M5 PALVA1] ===<gallery>IC_BD_M5_VA1.jpg</gallery>
| ! IC# || !! Brand || !! Name || !! Description || !! Documentation
| IC6 || Zilog || Z0840004PSC || Zilog Z80 8-bit coprocessor || <center>-</center>! IC# !! Brand !! Name !! Description !! Documentation
| IC1 || Signetics || SCN68000C8N64 || 8MHz Processor || <center>-</center>! IC# !! Brand !! Name !! Description !! Documentation
===PAL Model 1 VA4===
Board label: IC BD M5 PAL VA4
| IC13 || ? || ? || ? || <center>-</center>! Totals !! !!
Board label: === VA1.8 [PC BD M5 MD2 VA1.8 USA VA7] ===<gallery>PC_BD_MD2_VA1.8_USA.jpg</gallery>
Board label: PC BD MD2 VA1 USA {| borderclass="mw-collapsible mw-collapsed wikitable" style="1width: 600px;" style="text-align: center;"! colspan=5 width="600"|+NTSC Model 2 VA1 List of IC's
| ! IC# || !! Brand || !! Name || !! Description || !! Documentation
[[File{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align:Genesis_pal_model2_VA1.center;"! colspan=5 width="600"|List of IC's|-! IC# !! Brand !! Name !! Description !! Documentation|-| IC1 || Motorola || MC68HC000FN12 || Processor || <center>-</center>|-| IC2 || Sanyo || LC331632M-12 ||512K (32768 words X 16 bits) Pseudo-SRAM |||-| IC3 || Rohm || BA10358 || Dual ground sense operational amplifier || -|-| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8.jpg-bit coprocessor || -|-| IC5 || ? || XL J6265AF-10SL || || -|-| IC6 || Sega || 315-5786 (Toshiba T9N13BF) || || -|-| IC7 || Samsung ||thumbKM428C64J-10 |150px|PAL model 2 VA1.64K x 8]]Bit CMOS Video RAM || <center>-</center>|-| IC8 || Yamaha || YM2612 || frequency modulation synthesize || -|-| IC9/IC10 || || || || -|-| IC11 || || || Voltage Regulator || style="text-align: center;"| -|-| IC12 || Sega || 315-5684 (Rohm BA6166FS) || SOUND NETWORK/HEADPHONE AMP || -|-| IC13 || Sanken || SKA2195D || RGB Encoder || -|}
Board label: === VA2.3 PC BD MD2 VA1VA2.8 PAL3 USA ===
| ! IC# || !! Brand || !! Name || !! Description || !! Documentation
no edit summary
This page is used to document details of the hardware for the [[Sega Mega Drive Motherboard revisions==Model 1=====PAL Model 1 M5===/Genesis]].
{| borderclass="1mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"! colspan=5 width="600"|+PAL Model 1 M5 List of IC's
|-
|-
| IC1 || Hitachi Signetics || HD68HC000P8 SCN68000C8N64 || 8MHz Processor || <center>-</center>
|-
| IC2/IC3 || Motorola Toshiba || MCM51L832ASP10 TC51832SPL-12 || CMOS 1024 BIT 256K (32K x 8) Pseudo-SRAM , 12ns || <center>-</center>
|-
| IC4 || SEGA || 315-5433 5308 || ? I/O chip || <center>-</center>
|-
| IC5 || SEGA || 315-5313A 5309 || ? I/O chip || <center>-</center>
|-
| IC6 || Zilog || Z0840004PSC || Zilog Z80 8-bit coprocessor || <center>-</center>
|-
| IC7 || Fujitsu NEC || MB8464AD4168C-10LL15-SK SG || CMOS 6564K (8,536 SRAM 192 x 8-BIT) NMOS XRAM || <center>-</center>
|-
| IC8 || ? SEGA || ? 315-5313 (Yamaha YM7101) || ? VDP || <center>-</center>
|-
| IC9/IC10 || ? || ? || ? Video 256K (64K x 4) DRAM || <center>-</center>
|-
| IC11 || Yamaha || YM2612 || Audio frequency modulation synthesizer || <center>-</center>
|-
| IC12 || SONY Sony || CXA1034P CXA1034 || Amplifier Headphone amp || <center>-</center>
|-
| IC13 || SONY ? || CXA1145P ? || Video ? || <center>-</center>
|-
| IC14 || ? || ? || ? || <center>-<|-| IC15 || ? || ? || ? || -|-| IC16 || Sega || 315-5339 (DIP16) || I/center>O chip || -
|}
=== VA2 [IC BD M5 USA VA2] 837-6992 ===
<gallery>
IC_BD_M5_USA_VA2.jpg
</gallery>
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
! colspan=5 width="600"|List of IC's
|-
! IC# !! Brand !! Name !! Description !! Documentation
|-
| IC1 || Signetics || SCN68000C8N64 || 8MHz Processor || -
|-
| IC2/IC3 || Toshiba || TC51832SPL-12 || CMOS 256K (32K x 8-bit) Pseudo-SRAM, 12ns || -
|-
| IC4 || SEGA || 315-5308 || I/O chip || -
|-
| IC5 || SEGA || 315-5309 || I/O chip || -
|-
| IC6 || Zilog || Z0840004PSC || Zilog Z80 8-bit coprocessor || -
|-
| IC7 || NEC || D4168C-15 || 64K (8K x 8) NMOS XRAM, 150 ns || -
|-
| IC8 || SEGA ||315-5313 (Yamaha YM7101) || VDP || -
|-
| IC9/IC10 || Samsung & NEC || KM424C64Z-10 & D41264V-12 ||256K (64K x 4-bit) VRAM & Dual-Port Graphics Buffer || -
|-
| IC11 || Yamaha || YM2612 || frequency modulation synthesizer (Sound Chip) || [http://en.wikipedia.org/wiki/Yamaha_YM2612 HERE]
|-
| IC12 || Sony || A1034(CXA1034P/M)|| Headphone amp || [http://www.datasheetcatalog.org/datasheet/sony/06800809.pdf HERE]
|-
| IC13 || Sony || CXA1145 || Video encoder || [http://pdf1.alldatasheet.com/datasheet-pdf/view/77343/SONY/CXA1145P.html HERE]
|-
| IC14 || Hitachi || HA17358 || dual operational amplifier || [http://www.datasheetcatalog.org/datasheet/HitachiSemiconductor/mXqyszx.pdf HERE]
|-
| IC15/IC17 || ? || 7805 || +5V Regulator || -
|-
| IC16 || Sega || 315-5345 (DIP16) || I/O chip || -
|}
===Model 1 VA1===VA3 [[File:IC_BD_M5_VA1.jpg|thumb|150px]]Board label: IC BD M5 VA1USA VA3] 837-7071 ===
{| borderclass="1mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"! colspan=5 width="600"|+Model 1 VA1 List of IC's|-! IC# !! Brand !! Name !! Description !! Documentation|-| IC1 || Signetics || SCN68000C8N64 || 8MHz Processor || -|-| IC2/IC3 || Toshiba || TC51832SPL-12 || CMOS 256K (32K x 8) Pseudo-SRAM, 12ns || -|-| IC4 || SEGA || 315-5364 || I/O chip || -|-| IC5 || SEGA || 315-5309 || I/O chip || -|-| IC6 || Zilog || Z0840004PSC || Zilog Z80 8-bit coprocessor || -|-| IC7 || NEC || D4168C-15-SG || 8,192 x 8-BIT NMOS XRAM, 150 ns || -|-| IC8 || SEGA || 315-5313 || I/O chip || -
|-
| IC# IC9/IC10 || Brand Fujitsu || Name MB81461-12 || Description 256K (64K x 4-bit) VRAM || Documentation-
|-
| IC1 IC11 || Signetics Yamaha || SCN68000C8N64 YM2612 || 8MHz Processor frequency modulation synthesizer || <center>-</center>
|-
| IC2/IC3 IC12 || Toshiba Sony || TC51832SPL-12 CXA1034 || CMOS 256K (32K x 8) Pseudo-SRAM, 12ns Headphone amp || <center>-</center>
|-
| IC4 IC13 || SEGA Sony || 315-5308 CXA1145P || I/O chip RGB Encoder || <center>-</center>
|-
| IC5 IC14 || SEGA ? || 315-5309 LM358N ||Dual Operational Amplifier || I/O chip -|} === VA4 [IC BD M5 PAL VA4] === {| <center>class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-</align: center>;"! colspan=5 width="600"|List of IC's
|-
|-
| IC7 IC1 || NEC Signetics || D4168C-15-SG SCN68000C8N64 || 64K (8,192 x 8-BIT) NMOS XRAM 8MHz Processor || style="text-align: center;"| -
|-
| IC8 IC2/IC3 || SEGA Toshiba ||315TC51832SPL-5313 12 || CMOS 256K (Yamaha YM710132K x 8) Pseudo-SRAM, 12ns || VDP || <center>-</center>
|-
| IC9/IC10 IC4 || ? SEGA || ? || Video 256K (64K x 4) DRAM I/O chip || <center>-</center>
|-
| IC11 IC5 || Yamaha SEGA || YM2612 ? || frequency modulation synthesizer I/O chip || <center>-</center>
|-
| IC12 IC6 || Sony Zilog || CXA1034 Z0840004PSC || Headphone amp Zilog Z80 8-bit coprocessor || <center>-</center>
|-
| IC13 IC7 || ? NEC || ? D4168C-15 || ? 8,192 x 8-BIT NMOS XRAM, 150 ns || <center>-</center>
|-
| IC14 IC8 || ? || ? || ? || <center>-</center>
|-
| IC15 IC9/IC10 || ? || ? || ? || <center>-</center>
|-
| IC16 IC11 || Sega Yamaha || 315YM2612 || frequency modulation synthesizer || -|-| IC12 || ? || ? || ? || -|-5339 (DIP16) | IC13 || ? || ? || ? || -|-| IC14 || ? || ? || I/O chip ? || <center>-</center>
|}
=== VA5 ===
The only difference is the IC4 315-5402.
===NTSC Model 1 VA2VA6 [IC BD M5 PAL] ===[[File:IC_BD_M5_USA_VA2<gallery>Genesis_pal_model1_M5.jpg|thumb|150px|NTSC Model 1 VA2]]Board label: IC BD M5 USA VA2</gallery>
{| borderclass="1mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"! colspan=5 width="600"|+NTSC Model 1 VA2 List of IC's|-! IC# !! Brand !! Name !! Description !! Documentation|-| IC1 || Hitachi || HD68HC000P8 || 8MHz Processor || -|-| IC2/IC3 || Motorola || MCM51L832ASP10 || CMOS 1024 BIT SRAM || -|-| IC4 || SEGA || 315-5433 || I/O chip || -|-| IC5 || SEGA || 315-5313A || I/O chip || -|-| IC6 || Zilog || Z0840004PSC || Zilog Z80 8-bit coprocessor || -|-| IC7 || Fujitsu || MB8464A-10LL-SK || CMOS 65,536 SRAM || -|-| IC8 || ? || ? || ? || -|-| IC9/IC10 || ? || ? || ? || -|-| IC11 || Yamaha || YM2612 || Audio || -|-| IC12 || SONY || CXA1034P || Amplifier || -|-| IC13 || SONY || CXA1145P || Video || -
|-
| IC# IC14 || ? ||? | Brand |? | Name |-| Description } === VA6 [IC BD M5 USA VA6] === {|class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"! colspan=5 width="600"| DocumentationList of IC's
|-
|-
| IC2/IC3 IC1 || Toshiba Motorola || TC51832SPL-12 MC68000P8 || CMOS 256K (32K x 8) Pseudo-SRAM, 12ns 8MHz Processor || <center>-</center>
|-
| IC4 IC2/IC3 || SEGA Motorola || 315-5308 MCM51L832ASP10 || I/O chip 256Kb (32K x 8-bit) SRAM || <center>-</center>
|-
| IC5 IC4 || SEGA || 315-5309 5433 || I/O chip || <center>-</center>
|-
| IC6 IC5 || Zilog SEGA || Z0840004PSC 315-5313A || Zilog Z80 8-bit coprocessor I/O chip || <center>-</center>
|-
| IC7 IC6 || NEC Zilog || D4168C-15 Z0840004PSC || 8,192 x Zilog Z80 8-BIT NMOS XRAM, 150 ns |bit coprocessor | style="text-align: center;"| -
|-
| IC8 IC7 || SEGA Samsung ||315KM6264BL-5313 10 || 64Kb: (Yamaha YM71018K x 8-bit) SRAM || VDP || <center>-</center>
|-
| IC9/IC10 IC8 || ? SEGA || ? 315-5313 || Video 256K (64K x 4) DRAM I/O chip || <center>-</center>
|-
| IC11 IC9/IC10 || Yamaha Samsung & NEC || YM2612 KM424C64Z-10 & D41264V-12 || frequency modulation synthesizer 256K (64K x 4-bit) VRAM & dual-port graphics buffer || <center>-</center>
|-
| IC12 IC11 || Sony Yamaha || CXA1034 YM2612 || Headphone amp Audio || <center>-</center>
|-
| IC13 IC12 || Sony SONY || CXA1145 CXA1034P || Video encoder Headphone Amplifier || <center>-</center>
|-
| IC14 IC13 || ? SONY || ? CXA1145P || ? RGB Video || <center>-</center>
|-
| IC15 IC14 || ? Hitachi || ? HA17358 || ? Dual operational amplifier || <center>-</center>
|-
| IC16 IC15/17 || Sega ? || 315-5345 (DIP16) 7805 || I/O chip +5 Voltage Regulator || <center>-</center>
|}
=== VA7 [PC BD M5 USA VA7] 171-6217-11 ===
<gallery>
PC_BD_M5_USA_VA7.jpg
</gallery>
The VA7 is almost a Genesis 2 PCB in a Genesis 1 case. It even shares the same PCB prefix (PC).
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
! colspan=5 width="600"|List of IC's
|-
! IC# !! Brand !! Name !! Description !! Documentation
|-
| IC1 || Motorola || MC68HC000FN8 || Processor || -
|-
| IC2/IC3 || Hitachi || HM65256BLFP-10T || CMOS 256K (32K x 8) High Speed Pseudo-Static RAM || [http://pdf1.alldatasheet.com/datasheet-pdf/view/136263/HITACHI/HM65256BLFP-10T.html HERE]
|-
| IC4 || Zilog || Z0840004PSC || Zilog Z80 8-bit coprocessor || -
|-
| IC5 || Fujitsu || MB8464A-10L || 64K (8192 words x 8 bits) Low Power SRAM || -
|-
| IC6 || SEGA || 315-5487-01 || I/O, Bus arbiter, VDP, ym2612, TMSS || -
|-
| IC7/IC8 || Hitachi || HM53461ZP-12SG || 65,536-WORDx4-bit Multiport CMOS video ram || [http://cs.utsource.net/goods_files/pdf/12/122827_HITACHI_HM53461ZP-15.pdf HERE]
|-
| IC9/IC10 || Rohm || BA10324AF || Op-amp || [http://www.datasheetcatalog.org/datasheets/70/233206_DS.pdf HERE]
|-
| IC11 || SONY || CXA1145M || Video || -
|-
| IC12 || Toshiba || TA7805S || +5V Voltage regulator || -
|}
{| borderclass="1mw-collapsible mw-collapsed wikitable"style="width: 600px;" style="text-align: center;"! colspan=5 width="600"|List of Electrolytic Capacitors|-! CE# !! Capacitance !! Voltage|-| CE1 || 10 μF ||16 V|-| CE2 || 10 μF ||16 V|-| CE3 || 10 μF ||16 V|+PAL Model 1 VA4 IC's-| CE4 || 10 μF ||16 V|-| CE5 || 10 μF ||16 V|-| CE6 || 10 μF ||16 V|-| CE7 || 10 μF ||16 V|-| CE8 || 10 μF ||16 V|-| CE9 || 220 μF ||10 V|-| CE10 || 220 μF ||10 V|-| CE11 || 10 μF ||16 V|-| CE12 || 220 μF ||10 V|-| CE13 || 10 μF ||16 V|-| CE14 || 10 μF ||16 V|-| CE15 || 10 μF ||16 V|-| CE16 || 220 μF ||16 V|-| CE17 || 100 μF ||10 V|-| CE18 || 47 μF ||10 V|-| CE19 || 47 μF ||10 V|-| CE20 || 10 μF ||16 V
|-
| IC# CE21 || Brand 10 μF || Name || Description || Documentation16 V
|-
| IC1 CE22 || Signetics 10 μF || SCN68000C8N64 || 8MHz Processor || <center>-</center>16 V
|-
| IC2/IC3 CE23 || Toshiba 100 μF || TC51832SPL-12 || CMOS 256K (32K x 8) Pseudo-SRAM, 12ns || <center>-</center>10 V
|-
| IC4 CE24 || SEGA 47 μF || ? || I/O chip || <center>-</center>10 V
|-
| IC5 CE25 || SEGA || ? || I/O chip 47 μF || <center>-</center>10 V
|-
| IC6 CE26 || Zilog 47 μF || Z0840004PSC || Zilog Z80 8-bit coprocessor || <center>-</center>10 V
|-
| IC7 CE27 || NEC 47 μF || D4168C-15 || 8,192 x 8-BIT NMOS XRAM, 150 ns || style="text-align: center;"| -10 V
|-
| IC8 CE28 || ? 47 μF ||? || ? || <center>-</center>10 V
|-
| IC9/IC10 CE29 || ? 10 μF || ? || ? || <center>-</center>16 V
|-
| IC11 CE30 || Yamaha 10 μF || YM2612 || frequency modulation synthesizer || <center>-</center>16 V
|-
| IC12 CE31 || ? 100 μF || ? || ? || <center>-</center>10 V
|-
|-
| IC14 17 || ? 10 μF || ? 16 V|-| 7 || 47 μF || 10 V|-| 3 || 100 μF | ? |10 V| <center>-</center>| 4 || 220 μF || 10 V
|}
== Model 2 ==
===NTSC Model 1 VA7VA1 [PC BD MD2 VA1 USA] ===<gallery>Model2_va1_motherboard.jpg</gallery> {| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"! colspan=5 width="600"|List of IC's|-! IC# !! Brand !! Name !! Description !! Documentation|-| IC1 || Motorola || MC68HC000FN8 || Processor || -|-| IC2 || Toshiba || TC511632FL-10 || 65,536 Word x 16 Bit Dynamic Ram || -|-| IC3 || ? || ? || ? || -|-| IC4 || SEGA || 315-5678 (?) || ? || -|-| IC5 || Fujitsu || M88464A-10L || 8K Words x 8-Bit (64K) CMOS SRAM Low Power || -|-| IC6 || SEGA || 315-5660 || ? || -|-| IC7 || OKI || M54C864-80 || 65,536-Word x 8-Bit Multiport DRAM || -|-| IC8 || ? || ? || ? || -|-| IC9/IC10 || ? || LM324 || Low power quad op amps || -|-| IC11 || SONY || CXA1145M || Video (RGB Encoder) || [[Filehttp:PC_BD_M5_USA_VA7//pdf1.jpgalldatasheet.com/datasheet-pdf/view/77344/SONY/CXA1145M.html HERE]|-| IC12 || ? || ? || Voltage regulator |thumb|150px-|NTSC Model 1 VA7]]}
{| borderclass="1mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"! colspan=5 width="600"|+NTSC Model 1 VA7 List of IC's|-! IC# !! Brand !! Name !! Description !! Documentation
|-
| IC# IC2 || Brand Hitachi / Sanyo || Name 651632DFP-15 / LC331632M-12 || Description 512K (32K x 16-bit) SRAM || Documentation-
|-
| IC1 IC3 || Motorola ? || MC68HC000FN8 ? || Processor ? || <center>-</center>
|-
| IC2/IC3 IC4 || Sharp Zilog || LH5P832N-12 Z84C0006FEC || CMOS 256K (32K x Zilog Z80 8) Pseudo-Static RAM bit coprocessor || <center>-</center>
|-
| IC4 IC5 || Zilog Rohm || Z0840004PSC XLJ6265AF-10SL || Zilog Z80 64K (8K x 8-bit coprocessor ) CMOS SRAM || <center>-</center>
|-
| IC5 IC6 || Sanyo SEGA || LC3564PM 315-5660 || 64K (8192 words x 8 bits) SRAM Custom I/O chip || <center>-</center>
|-
| IC6 IC7 || SEGA Samsung || 315KM428C64J-5487-01 10 || I/O, Bus arbiter, VDP, ym2612, TMSS 512K (64K x 8-bit) VRAM || <center>-</center>
|-
| IC7/IC8 || Hitachi ? || HM53461ZP-12SG ? || 65,536-WORDx4-bit Multiport CMOS video ram ? || style="text-align: center;"| [http://cs.utsource.net/goods_files/pdf/12/122827_HITACHI_HM53461ZP-15.pdf HERE]
|-
| IC9/IC10 || Rohm || BA10324AF || Opground sense quad op-amp || <center>[http://www.datasheetcatalog.org/datasheets/70/233206_DS.pdf HERE]</center>-
|-
| IC11 || SONY Sony / Samsung || CXA1145M / KA2195D || Video RGB Encoder NTSC+PAL / NTSC only || <center>-<[http://elcodis.com/parts/6023884/center>MB3514.html#datasheet HERE]
|-
| IC12 || ? || TA7805S 7805 || +5V Voltage regulator || <center>-</center>
|}
==Model 2=VA1.8 [PC BD MD2 VA1.8 PAL] ===<gallery>Genesis_pal_model2_VA1.8.jpg</gallery>
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style=NTSC Model 2 VA1="text-align: center;"! colspan=5 width="600"|List of IC's|-! IC# !! Brand !! Name !! Description !! Documentation|-| IC1 || Motorola || MC68HC000FN8 || Processor || -|-| IC2 || ? || 651632DFP-15 || 512K (32K x 16-bit) SRAM || -|-| IC3 || ? || ? || ? || -|-| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || -|-| IC5 || Rohm || BR6265BF-10SL || 64K (8K x 8-bit) CMOS SRAM || -|-| IC6 || SEGA || 315-5660 || Custom I/O chip || -|-| IC7 || Hitachi || HM53861J-8 || 512K (64K x 8-bit) VRAM || -|-| IC8 || ? || ? || ? || -|-| IC9/IC10 || Rohm || BA10324AF || ground sense quad op-amp || -|-| IC11 || Fujitsu || MB3514 || RGB Encoder || [http://elcodis.com/parts/6023884/MB3514.html#datasheet HERE]|-| IC12 || ? || 7805 || +5V Voltage regulator || -|}
=== VA1.8 [[File:Model2_va1_motherboardPC BD MD2 VA1.8 ASIA] ===<gallery>PC_BD_MD2_VA1.8_ASIA.jpg|thumb|150px|NTSC Model 2 VA1]]</gallery>
|-
|-
| IC1 || Motorola || MC68HC000FN8 || Processor || <center>-</center>
|-
| IC2 || Toshiba || TC511632FL-10 || 65,536 Word 512K (32K x 16 Bit Dynamic Ram -bit) PSRAM, 100 ns || <center>-</center>
|-
| IC3 || ? || ? || ? || <center>-</center>
|-
| IC4 || SEGA Toshiba || 31584C00AU-5678 (?) 6 || ? Z80 8-bit coprocessor || <center>-</center>
|-
| IC5 || Fujitsu ? || M88464A-10L ? || 8K Words x 864K (8Kx8-Bit (64Kbit) CMOS SRAM Low Power || <center>-</center>
|-
| IC6 || SEGA Sega || 315-5660 || ? || <center>-</center>
|-
| IC7 || OKI Hitachi || M54C864HM53861J-80 8 || 65,536-Word 512K (64K x 8-Bit Multiport DRAM bit) VRAM || <center>-</center>
|-
| IC8 || ? || ? || ? || <center>-</center>
|-
| IC9/IC10 || ? Rohm || LM324 BA10324AF || Low power ground sense quad op amps -amp || <center>-</center>
|-
| IC11 || SONY Fujitsu || CXA1145M MB3514 || Video (RGB Encoder) || style="text-align: center;"| [http://pdf1.alldatasheet.com/datasheet-pdf/view/77344/SONY/CXA1145M.html HERE]
|-
| IC12 || ? || ? 7805 || Voltage regulator Regulator || <center>-</center>
|}
===PAL Model 2 VA1.8VA2 [PC BD MD2 VA2 USA] ===
{| borderclass="1mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"! colspan=5 width="600"|+PAL Model 2 VA1.8 List of IC's
|-
|-
| IC1 || Motorola || MC68HC000FN8 MC68000FN12 || Processor || <center>-</center>
|-
| IC2 || ? Toshiba || 651632DFPTC511632FL-15 10 || SOP 40W 512K (32768 words X 16 bits) Pseudo-SRAM || <center>-</center>
|-
| IC3 || ? || ? || ? || <center>-</center>
|-
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || <center>-</center>
|-
| IC5 || ? || ? XL J6265AF-10SL || ? || <center>-</center>
|-
| IC6 || SEGA Sega || 315-5660 5786 (Toshiba T9N13BF) || ? VDP and IO chip all-in-one. Doesn't include the YM2612. Used on MD2 VA2 and VA2.3 board revisions. || <center>-</center>
|-
| IC7 || Hitachi Toshiba || HM53861JTC5281286J-8 80 || RAM chip 1M (128K x 8-bit) VRAM || <center>-</center>
|-
| IC8 || ? Yamaha || ? YM2612 || ? frequency modulation synthesize || <center>-</center>
|-
| IC9/IC10 || Rohm SEGA || BA10324AF 315-5684 (Rohm BA6166FS) || ground sense quad op-amp SOUND NETWORK / HEADPHONE AMP || <center>-</center>
|-
| IC11 || Fujitsu Sony || MB3514 CXA1645M || RGB Encoder || style="text-align: center;"| [http://elcodis.com/parts/6023884/MB3514.html#datasheet HERE]
|-
| IC12 || ? || 7805 || +5V voltage regulator || -|-| IC13 || ? || Voltage regulator 74HC14 || HEX SCHMITT-TRIGGER INVERTER || <center>-</center>
|}
==Model 3=VA3 [PC BD MD2 VA3 USA HAL] ===<gallery>PC_BD_MD2_VA3_USA_HAL.jpg</gallery>
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
! colspan=5 width="600"|List of IC's
|-
! IC# !! Brand !! Name !! Description !! Documentation
|-
| IC1 || Motorola || MC68HC000FN8 || Processor || -
|-
| IC2 || Hitachi(?) || 651632DFP-15 ||512K (32K X 16-bits) Pseudo-SRAM || -
|-
| IC3 || ? || ? || ? || -
|-
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || -
|-
| IC5 || ? || ? || 64K (8K x 8-bit) SRAM || -
|-
| IC6 || Sega || 315-5660 || VDP and IO chip all-in-one. || -
|-
| IC7 || OKI || M54C864-80 || 512K (64K x 8-bit) VRAM || -
|-
| IC8 || ? || ? || ? || -
|-
| IC9 || SEGA || 315-5684 (Rohm BA6166FS) || SOUND NETWORK / HEADPHONE AMP || -
|-
| IC10 || ? || ? || ? || -
|-
| IC11 || Samsung || KA2195D || RGB Encoder || -
|-
| IC12 || ? || 7805 || +5V Voltage Regulator || -
|}
== Notes ==
Most of the time the main SEGA IC's are based on/renamed chips from other brands as follows:
*MD1 VA0, VA1, VA2, VA3, VA4, VA5, VA6, VA6.8
: Yamaha YM7101 / FC1001 = Sega 315-5313 / 315-5313A / 315-5313A-01
*MD1 VA7 & MD2 VA0, VA1, VA1.8, VA3
: Yamaha FC1004 = Sega 315-5487 / 315-5487-01 / 315-5487-10 / 315-5660 / 315-5660-02 / 315-5708 / 315-5708-01
*[[Sega Nomad]] & some MD2 VA3's
: Yamaha FF1004 = Sega 315-5700
*MD2 VA2, VA2.3
: Toshiba T9N13BF = Sega 315-5786
: Toshiba TC6158AF = ???
*MD2 VA4 & GEN3 VA1
: Yamaha FJ3002 = Sega 315-5960
*GEN3 VA2
: Yamaha FQ8007 = Sega 315-6123
==See Alsoalso ==
*[[Sega Genesis]]
*[[Sega Genesis Cartridge]]
[[Category:Sega Genesis]]
[[Category:Hardware]]
