Difference between revisions of "Sega Mega Drive/Genesis Hardware"

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m (→‎Model 1)
m (→‎Model 2)
Line 253: Line 253:
 
==Model 2==
 
==Model 2==
 
===VA0 PAL===
 
===VA0 PAL===
 +
 +
<br />
  
 
===VA1 [PC BD MD2 VA1 USA]===
 
===VA1 [PC BD MD2 VA1 USA]===
−
[[File:Model2_va1_motherboard.jpg|thumb|150px|NTSC Model 2 VA1]]
+
[[File:Model2_va1_motherboard.jpg|200px|center]]
  
−
{| border="1"
+
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
−
|+NTSC Model 2 VA1 IC's
+
! colspan=5 width="600"|List of IC's
 
|-
 
|-
−
| IC# || Brand || Name || Description || Documentation
+
! IC# !! Brand !! Name !! Description !! Documentation
 
|-
 
|-
−
| IC1 || Motorola || MC68HC000FN8 || Processor || <center>-</center>
+
| IC1 || Motorola || MC68HC000FN8 || Processor || -
 
|-
 
|-
−
| IC2 || Toshiba || TC511632FL-10 || 65,536 Word x 16 Bit Dynamic Ram || <center>-</center>
+
| IC2 || Toshiba || TC511632FL-10 || 65,536 Word x 16 Bit Dynamic Ram || -
 
|-
 
|-
−
| IC3 || ? || ? || ? || <center>-</center>
+
| IC3 || ? || ? || ? || -
 
|-
 
|-
−
| IC4 || SEGA || 315-5678 (?) || ? || <center>-</center>
+
| IC4 || SEGA || 315-5678 (?) || ? || -
 
|-
 
|-
−
| IC5 || Fujitsu || M88464A-10L || 8K Words x 8-Bit (64K) CMOS SRAM Low Power || <center>-</center>
+
| IC5 || Fujitsu || M88464A-10L || 8K Words x 8-Bit (64K) CMOS SRAM Low Power || -
 
|-
 
|-
−
| IC6 || SEGA || 315-5660 || ? || <center>-</center>
+
| IC6 || SEGA || 315-5660 || ? || -
 
|-
 
|-
−
| IC7 || OKI || M54C864-80 || 65,536-Word x 8-Bit Multiport DRAM || <center>-</center>
+
| IC7 || OKI || M54C864-80 || 65,536-Word x 8-Bit Multiport DRAM || -
 
|-
 
|-
−
| IC8 || ? || ? || ? || <center>-</center>
+
| IC8 || ? || ? || ? || -
 
|-
 
|-
−
| IC9/IC10 || ? || LM324 || Low power quad op amps || <center>-</center>
+
| IC9/IC10 || ? || LM324 || Low power quad op amps || -
 
|-
 
|-
−
| IC11 || SONY || CXA1145M || Video (RGB Encoder) || style="text-align: center;"| [http://pdf1.alldatasheet.com/datasheet-pdf/view/77344/SONY/CXA1145M.html HERE]
+
| IC11 || SONY || CXA1145M || Video (RGB Encoder) || [http://pdf1.alldatasheet.com/datasheet-pdf/view/77344/SONY/CXA1145M.html HERE]
 
|-
 
|-
−
| IC12 || ? || ? || Voltage regulator || <center>-</center>
+
| IC12 || ? || ? || Voltage regulator || -
 
|}
 
|}
 +
 +
<br />
 +
 
===VA1 ASIA===
 
===VA1 ASIA===
 +
 +
<br />
  
 
===VA1.8 [PC BD MD2 VA1.8 USA]===
 
===VA1.8 [PC BD MD2 VA1.8 USA]===
−
[[File:PC_BD_MD2_VA1.8_USA.jpg|thumb|150px]]
+
[[File:PC_BD_MD2_VA1.8_USA.jpg|200px|center]]
  
−
{| border="1"
+
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
−
|+NTSC Model 2 VA1.8 IC's
+
! colspan=5 width="600"|List of IC's
−
|-
 
−
| IC# || Brand || Name || Description || Documentation
 
 
|-
 
|-
−
| IC1 || Motorola || MC68HC000FN8 || Processor || <center>-</center>
+
! IC# !! Brand !! Name !! Description !! Documentation
 
|-
 
|-
−
| IC2 || Hitachi / Sanyo || 651632DFP-15 / LC331632M-12 || 512K (32K x 16-bit) SRAM  || <center>-</center>
+
| IC2 || Hitachi / Sanyo || 651632DFP-15 / LC331632M-12 || 512K (32K x 16-bit) SRAM  || -
 
|-
 
|-
−
| IC3 || ? || ? || ? || <center>-</center>
+
| IC3 || ? || ? || ? || -
 
|-
 
|-
−
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || <center>-</center>
+
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || -
 
|-
 
|-
−
| IC5 || Rohm || XLJ6265AF-10SL || 64K (8K x 8-bit) CMOS SRAM || <center>-</center>
+
| IC5 || Rohm || XLJ6265AF-10SL || 64K (8K x 8-bit) CMOS SRAM || -
 
|-
 
|-
−
| IC6 || SEGA || 315-5660 || Custom I/O chip || <center>-</center>
+
| IC6 || SEGA || 315-5660 || Custom I/O chip || -
 
|-
 
|-
−
| IC7 || Samsung || KM428C64J-10 || 512K (64K x 8-bit) VRAM || <center>-</center>
+
| IC7 || Samsung || KM428C64J-10 || 512K (64K x 8-bit) VRAM || -
 
|-
 
|-
−
| IC8 || ? || ? || ? || <center>-</center>
+
| IC8 || ? || ? || ? || -
 
|-
 
|-
−
| IC9/IC10 || Rohm || BA10324AF || ground sense quad op-amp || <center>-</center>
+
| IC9/IC10 || Rohm || BA10324AF || ground sense quad op-amp || -
 
|-
 
|-
−
| IC11 || Sony / Samsung || CXA1145M / KA2195D || RGB Encoder NTSC+PAL / NTSC only || style="text-align: center;"| [http://elcodis.com/parts/6023884/MB3514.html#datasheet HERE]
+
| IC11 || Sony / Samsung || CXA1145M / KA2195D || RGB Encoder NTSC+PAL / NTSC only || [http://elcodis.com/parts/6023884/MB3514.html#datasheet HERE]
 
|-
 
|-
−
| IC12 || ? || 7805 || +5V Voltage regulator || <center>-</center>
+
| IC12 || ? || 7805 || +5V Voltage regulator || -
 
|}
 
|}
 +
 +
<br />
  
 
===VA1.8 [PC BD MD2 VA1.8 PAL]===
 
===VA1.8 [PC BD MD2 VA1.8 PAL]===
−
[[File:Genesis_pal_model2_VA1.8.jpg|thumb|150px|PAL model 2 VA1.8]]
+
[[File:Genesis_pal_model2_VA1.8.jpg||200px|center]]
  
−
{| border="1"
+
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
−
|+PAL Model 2 VA1.8 IC's
+
! colspan=5 width="600"|List of IC's
 
|-
 
|-
−
| IC# || Brand || Name || Description || Documentation
+
! IC# !! Brand !! Name !! Description !! Documentation
 
|-
 
|-
−
| IC1 || Motorola || MC68HC000FN8 || Processor || <center>-</center>
+
| IC1 || Motorola || MC68HC000FN8 || Processor || -
 
|-
 
|-
−
| IC2 || ? || 651632DFP-15 || 512K (32K x 16-bit) SRAM  || <center>-</center>
+
| IC2 || ? || 651632DFP-15 || 512K (32K x 16-bit) SRAM  || -
 
|-
 
|-
−
| IC3 || ? || ? || ? || <center>-</center>
+
| IC3 || ? || ? || ? || -
 
|-
 
|-
−
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || <center>-</center>
+
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || -
 
|-
 
|-
−
| IC5 || Rohm || BR6265BF-10SL || 64K (8K x 8-bit) CMOS SRAM || <center>-</center>
+
| IC5 || Rohm || BR6265BF-10SL || 64K (8K x 8-bit) CMOS SRAM || -
 
|-
 
|-
−
| IC6 || SEGA || 315-5660 || Custom I/O chip || <center>-</center>
+
| IC6 || SEGA || 315-5660 || Custom I/O chip || -
 
|-
 
|-
−
| IC7 || Hitachi || HM53861J-8 || 512K (64K x 8-bit) VRAM || <center>-</center>
+
| IC7 || Hitachi || HM53861J-8 || 512K (64K x 8-bit) VRAM || -
 
|-
 
|-
−
| IC8 || ? || ? || ? || <center>-</center>
+
| IC8 || ? || ? || ? || -
 
|-
 
|-
−
| IC9/IC10 || Rohm || BA10324AF || ground sense quad op-amp || <center>-</center>
+
| IC9/IC10 || Rohm || BA10324AF || ground sense quad op-amp || -
 
|-
 
|-
−
| IC11 || Fujitsu || MB3514 || RGB Encoder || style="text-align: center;"| [http://elcodis.com/parts/6023884/MB3514.html#datasheet HERE]
+
| IC11 || Fujitsu || MB3514 || RGB Encoder || [http://elcodis.com/parts/6023884/MB3514.html#datasheet HERE]
 
|-
 
|-
−
| IC12 || ? || 7805 || +5V Voltage regulator || <center>-</center>
+
| IC12 || ? || 7805 || +5V Voltage regulator || -
 
|}
 
|}
  
 +
<br />
  
 
===VA1.8 [PC BD MD2 VA1.8 ASIA]===
 
===VA1.8 [PC BD MD2 VA1.8 ASIA]===
−
[[File:PC_BD_MD2_VA1.8_ASIA.jpg|thumb|150px]]
+
[[File:PC_BD_MD2_VA1.8_ASIA.jpg|200px|center]]
  
−
{| border="1"
+
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
−
|+PAL Model 2 VA1.8 IC's
+
! colspan=5 width="600"|List of IC's
 
|-
 
|-
−
| IC# || Brand || Name || Description || Documentation
+
! IC# !! Brand !! Name !! Description !! Documentation
 
|-
 
|-
−
| IC1 || Motorola || MC68HC000FN8 || Processor || <center>-</center>
+
| IC1 || Motorola || MC68HC000FN8 || Processor || -
 
|-
 
|-
 
| IC2 || Toshiba || TC511632FL-10 ||512K (32K x 16-bit) PSRAM, 100 ns ||
 
| IC2 || Toshiba || TC511632FL-10 ||512K (32K x 16-bit) PSRAM, 100 ns ||
 
|-
 
|-
−
| IC3 || ? || ? || ? || <center>-</center>
+
| IC3 || ? || ? || ? || -
 
|-
 
|-
−
| IC4 || Toshiba || 84C00AU-6 || Z80 8-bit coprocessor || <center>-</center>
+
| IC4 || Toshiba || 84C00AU-6 || Z80 8-bit coprocessor || -
 
|-
 
|-
−
| IC5 || ? || ? || 64K (8Kx8-bit) SRAM || <center>-</center>
+
| IC5 || ? || ? || 64K (8Kx8-bit) SRAM || -
 
|-
 
|-
−
| IC6 || Sega || 315-5660 || || <center>-</center>
+
| IC6 || Sega || 315-5660 || || -
 
|-
 
|-
−
| IC7 || Hitachi || HM53861J-8 || 512K (64K x 8-bit) VRAM || <center>-</center>
+
| IC7 || Hitachi || HM53861J-8 || 512K (64K x 8-bit) VRAM || -
 
|-
 
|-
−
| IC8 || ? || ? || ? || <center>-</center>
+
| IC8 || ? || ? || ? || -
 
|-
 
|-
−
| IC9/IC10 || Rohm || BA10324AF || ground sense quad op-amp || <center>-</center>
+
| IC9/IC10 || Rohm || BA10324AF || ground sense quad op-amp || -
 
|-
 
|-
−
| IC11 || Fujitsu || MB3514 || RGB Encoder || style="text-align: center;"| -
+
| IC11 || Fujitsu || MB3514 || RGB Encoder || -
 
|-
 
|-
−
| IC12 || || 7805 || Voltage Regulator || <center>-</center>
+
| IC12 || || 7805 || Voltage Regulator || -
 
|}
 
|}
 +
 +
<br />
  
 
===VA2 [PC BD MD2 VA2 USA]===
 
===VA2 [PC BD MD2 VA2 USA]===
  
−
{| border="1"
+
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
−
|+PAL Model 2 VA1.8 IC's
+
! colspan=5 width="600"|List of IC's
 
|-
 
|-
−
| IC# || Brand || Name || Description || Documentation
+
! IC# !! Brand !! Name !! Description !! Documentation
 
|-
 
|-
 
| IC1 || Motorola || MC68HC000FN12 || Processor || <center>-</center>
 
| IC1 || Motorola || MC68HC000FN12 || Processor || <center>-</center>
Line 391: Line 401:
 
| IC2 || Sanyo || LC331632M-12 ||512K (32768 words X 16 bits) Pseudo-SRAM ||
 
| IC2 || Sanyo || LC331632M-12 ||512K (32768 words X 16 bits) Pseudo-SRAM ||
 
|-
 
|-
−
| IC3 || Rohm || BA10358 || Dual ground sense operational amplifier || <center>-</center>
+
| IC3 || Rohm || BA10358 || Dual ground sense operational amplifier || -
 
|-
 
|-
−
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || <center>-</center>
+
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || -
 
|-
 
|-
−
| IC5 || ? || XL J6265AF-10SL || || <center>-</center>
+
| IC5 || ? || XL J6265AF-10SL || || -
 
|-
 
|-
−
| IC6 || Sega || 315-5786 (Toshiba T9N13BF) || || <center>-</center>
+
| IC6 || Sega || 315-5786 (Toshiba T9N13BF) || || -
 
|-
 
|-
 
| IC7 || Samsung || KM428C64J-10 || 64K x 8 Bit CMOS Video RAM || <center>-</center>
 
| IC7 || Samsung || KM428C64J-10 || 64K x 8 Bit CMOS Video RAM || <center>-</center>
 
|-
 
|-
−
| IC8 || Yamaha || YM2612 || frequency modulation synthesize || <center>-</center>
+
| IC8 || Yamaha || YM2612 || frequency modulation synthesize || -
 
|-
 
|-
−
| IC9/IC10 || || || || <center>-</center>
+
| IC9/IC10 || || || || -
 
|-
 
|-
 
| IC11 || || || Voltage Regulator || style="text-align: center;"| -
 
| IC11 || || || Voltage Regulator || style="text-align: center;"| -
 
|-
 
|-
−
| IC12 || Sega || 315-5684 (Rohm BA6166FS) || SOUND NETWORK/HEADPHONE AMP || <center>-</center>
+
| IC12 || Sega || 315-5684 (Rohm BA6166FS) || SOUND NETWORK/HEADPHONE AMP || -
 
|-
 
|-
−
| IC13 || Sanken || SKA2195D || RGB Encoder || <center>-</center>
+
| IC13 || Sanken || SKA2195D || RGB Encoder || -
 
|}
 
|}
 +
 +
<br />
  
 
===VA2.3 PC BD MD2 VA2.3 USA===
 
===VA2.3 PC BD MD2 VA2.3 USA===
  
−
{| border="1"
+
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
−
|+NTSC Model 2 VA2.2 IC's
+
! colspan=5 width="600"|List of IC's
 
|-
 
|-
−
| IC# || Brand || Name || Description || Documentation
+
! IC# !! Brand !! Name !! Description !! Documentation
 
|-
 
|-
−
| IC1 || Motorola || MC68000FN12 || Processor || <center>-</center>
+
| IC1 || Motorola || MC68000FN12 || Processor || -
 
|-
 
|-
−
| IC2 || Toshiba || TC511632FL-10 ||512K (32768 words X 16 bits) Pseudo-SRAM ||
+
| IC2 || Toshiba || TC511632FL-10 ||512K (32768 words X 16 bits) Pseudo-SRAM || -
 
|-
 
|-
−
| IC3 || ? || ? || ? || <center>-</center>
+
| IC3 || ? || ? || ? || -
 
|-
 
|-
−
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || <center>-</center>
+
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || -
 
|-
 
|-
−
| IC5 || ? || XL J6265AF-10SL || || <center>-</center>
+
| IC5 || ? || XL J6265AF-10SL || || -
 
|-
 
|-
−
| IC6 || Sega || 315-5786 (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>
+
| IC6 || Sega || 315-5786 (Toshiba T9N13BF) || VDP and IO chip all-in-one. Doesn't include the YM2612. Used on MD2 VA2 and VA2.3 board revisions. || -
 
|-
 
|-
−
| IC7 || Toshiba || TC5281286J-80 || 1M (128K x 8-bit) VRAM || <center>-</center>
+
| IC7 || Toshiba || TC5281286J-80 || 1M (128K x 8-bit) VRAM || -
 
|-
 
|-
−
| IC8 || Yamaha || YM2612 || frequency modulation synthesize || <center>-</center>
+
| IC8 || Yamaha || YM2612 || frequency modulation synthesize || -
 
|-
 
|-
−
| IC9 || SEGA || 315-5684 (Rohm BA6166FS) || SOUND NETWORK / HEADPHONE AMP || <center>-</center>
+
| IC9 || SEGA || 315-5684 (Rohm BA6166FS) || SOUND NETWORK / HEADPHONE AMP || -
 
|-
 
|-
−
| IC11 || Sony || CXA1645M || RGB Encoder || style="text-align: center;"| -
+
| IC11 || Sony || CXA1645M || RGB Encoder || -
 
|-
 
|-
−
| IC12 || ? || 7805 || +5V voltage regulator || <center>-</center>
+
| IC12 || ? || 7805 || +5V voltage regulator || -
 
|-
 
|-
−
| IC13 || ? || 74HC14 || HEX SCHMITT-TRIGGER INVERTER || <center>-</center>
+
| IC13 || ? || 74HC14 || HEX SCHMITT-TRIGGER INVERTER || -
 
|}
 
|}
 +
 +
<br />
  
 
===VA3 [PC BD MD2 VA3 USA HAL]===
 
===VA3 [PC BD MD2 VA3 USA HAL]===
−
[[File:PC_BD_MD2_VA3_USA_HAL.jpg|thumb|150px]]
+
[[File:PC_BD_MD2_VA3_USA_HAL.jpg|200px|center]]
  
−
{| border="1"
+
{| class="mw-collapsible mw-collapsed wikitable" style="width: 600px;" style="text-align: center;"
−
|+NTSC Model 2 VA3 IC's
+
! colspan=5 width="600"|List of IC's
 
|-
 
|-
−
| IC# || Brand || Name || Description || Documentation
+
! IC# !! Brand !! Name !! Description !! Documentation
 
|-
 
|-
−
| IC1 || Motorola || MC68HC000FN8 || Processor || <center>-</center>
+
| IC1 || Motorola || MC68HC000FN8 || Processor || -
 
|-
 
|-
−
| IC2 || Hitachi(?) || 651632DFP-15 ||512K (32K X 16-bits) Pseudo-SRAM ||
+
| IC2 || Hitachi(?) || 651632DFP-15 ||512K (32K X 16-bits) Pseudo-SRAM || -
 
|-
 
|-
−
| IC3 || ? || ? || ? || <center>-</center>
+
| IC3 || ? || ? || ? || -
 
|-
 
|-
−
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || <center>-</center>
+
| IC4 || Zilog || Z84C0006FEC || Zilog Z80 8-bit coprocessor || -
 
|-
 
|-
−
| IC5 || ? || ? || 64K (8K x 8-bit) SRAM || <center>-</center>
+
| IC5 || ? || ? || 64K (8K x 8-bit) SRAM || -
 
|-
 
|-
−
| IC6 || Sega || 315-5660 || VDP and IO chip all-in-one. || <center>-</center>
+
| IC6 || Sega || 315-5660 || VDP and IO chip all-in-one. || -
 
|-
 
|-
−
| IC7 || OKI || M54C864-80 || 512K (64K x 8-bit) VRAM || <center>-</center>
+
| IC7 || OKI || M54C864-80 || 512K (64K x 8-bit) VRAM || -
 
|-
 
|-
−
| IC8 || ? || ? || ? || <center>-</center>
+
| IC8 || ? || ? || ? || -
 
|-
 
|-
−
| IC9 || SEGA || 315-5684 (Rohm BA6166FS) || SOUND NETWORK / HEADPHONE AMP || <center>-</center>
+
| IC9 || SEGA || 315-5684 (Rohm BA6166FS) || SOUND NETWORK / HEADPHONE AMP || -
 
|-
 
|-
−
| IC10 || ? || ? || ? || style="text-align: center;"| -
+
| IC10 || ? || ? || ? || -
 
|-
 
|-
−
| IC11 || Samsung || KA2195D || RGB Encoder || <center>-</center>
+
| IC11 || Samsung || KA2195D || RGB Encoder || -
 
|-
 
|-
−
| IC12 || ? || 7805 || +5V Voltage Regulator || <center>-</center>
+
| IC12 || ? || 7805 || +5V Voltage Regulator || -
 
|}
 
|}
 +
 +
<br />
  
 
===VA4===
 
===VA4===

Revision as of 14:56, 25 May 2013

Sega Mega Drive Motherboard revisions

Model 1

VA1 [IC BD M5 VA1]

IC BD M5 VA1.jpg
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 315-5308 I/O chip -
IC5 SEGA 315-5309 I/O chip -
IC6 Zilog Z0840004PSC Zilog Z80 8-bit coprocessor -
IC7 NEC D4168C-15-SG 64K (8,192 x 8-BIT) NMOS XRAM -
IC8 SEGA 315-5313 (Yamaha YM7101) VDP -
IC9/IC10 ? ? Video 256K (64K x 4) DRAM -
IC11 Yamaha YM2612 frequency modulation synthesizer -
IC12 Sony CXA1034 Headphone amp -
IC13 ? ? ? -
IC14 ? ? ? -
IC15 ? ? ? -
IC16 Sega 315-5339 (DIP16) I/O chip -


VA2 [IC BD M5 USA VA2] 837-6992

IC BD M5 USA VA2.jpg
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) HERE
IC12 Sony A1034(CXA1034P/M) Headphone amp HERE
IC13 Sony CXA1145 Video encoder HERE
IC14 Hitachi HA17358 dual operational amplifier HERE
IC15/IC17 ? 7805 +5V Regulator -
IC16 Sega 315-5345 (DIP16) I/O chip -


VA3 [IC BD M5 USA VA3] 837-7071

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 -
IC9/IC10 Fujitsu MB81461-12 256K (64K x 4-bit) VRAM -
IC11 |YM2612 frequency modulation synthesizer -
IC12 Sony CXA1034 Headphone amp -
IC13 Sony CXA1145P RGB Encoder -
IC14  ? LM358N Dual Operational Amplifier -


VA4 [IC BD M5 PAL VA4]

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 ? I/O chip -
IC5 SEGA ? I/O chip -
IC6 Zilog Z0840004PSC Zilog Z80 8-bit coprocessor -
IC7 NEC D4168C-15 8,192 x 8-BIT NMOS XRAM, 150 ns -
IC8 ? ? ? -
IC9/IC10 ? ? ? -
IC11 Yamaha YM2612 frequency modulation synthesizer -
IC12 ? ? ? -
IC13 ? ? ? -
IC14 ? ? ? -


VA5

The only difference is the IC4 315-5402


VA6 [IC BD M5 PAL]

Genesis pal model1 M5.jpg
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 -
IC14 ? ? ? -


VA6 [IC BD M5 USA VA6]

List of IC's
IC# Brand Name Description Documentation
IC1 Motorola MC68000P8 8MHz Processor -
IC2/IC3 Motorola MCM51L832ASP10 256Kb (32K x 8-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 Samsung KM6264BL-10 64Kb: (8K x 8-bit) SRAM -
IC8 SEGA 315-5313 I/O chip -
IC9/IC10 Samsung & NEC KM424C64Z-10 & D41264V-12 256K (64K x 4-bit) VRAM & dual-port graphics buffer -
IC11 Yamaha YM2612 Audio -
IC12 SONY CXA1034P Headphone Amplifier -
IC13 SONY CXA1145P RGB Video -
IC14 Hitachi HA17358 Dual operational amplifier -
IC15/17 ? 7805 +5 Voltage Regulator -


VA6.8


VA7 [PC BD M5 USA VA7] 171-6217-11

PC BD M5 USA VA7.jpg

The VA7 is almost a Genesis 2 PCB in a Genesis 1 case. It even shares the same PCB prefix (PC).

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 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 HERE
IC9/IC10 Rohm BA10324AF Op-amp HERE
IC11 SONY CXA1145M Video -
IC12 Toshiba TA7805S +5V Voltage regulator -

Model 2

VA0 PAL


VA1 [PC BD MD2 VA1 USA]

Model2 va1 motherboard.jpg
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) HERE
IC12 ? ? Voltage regulator -


VA1 ASIA


VA1.8 [PC BD MD2 VA1.8 USA]

PC BD MD2 VA1.8 USA.jpg
List of IC's
IC# Brand Name Description Documentation
IC2 Hitachi / Sanyo 651632DFP-15 / LC331632M-12 512K (32K x 16-bit) SRAM -
IC3 ? ? ? -
IC4 Zilog Z84C0006FEC Zilog Z80 8-bit coprocessor -
IC5 Rohm XLJ6265AF-10SL 64K (8K x 8-bit) CMOS SRAM -
IC6 SEGA 315-5660 Custom I/O chip -
IC7 Samsung KM428C64J-10 512K (64K x 8-bit) VRAM -
IC8 ? ? ? -
IC9/IC10 Rohm BA10324AF ground sense quad op-amp -
IC11 Sony / Samsung CXA1145M / KA2195D RGB Encoder NTSC+PAL / NTSC only HERE
IC12 ? 7805 +5V Voltage regulator -


VA1.8 [PC BD MD2 VA1.8 PAL]

Genesis pal model2 VA1.8.jpg
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 HERE
IC12 ? 7805 +5V Voltage regulator -


VA1.8 [PC BD MD2 VA1.8 ASIA]

PC BD MD2 VA1.8 ASIA.jpg
List of IC's
IC# Brand Name Description Documentation
IC1 Motorola MC68HC000FN8 Processor -
IC2 Toshiba TC511632FL-10 512K (32K x 16-bit) PSRAM, 100 ns
IC3 ? ? ? -
IC4 Toshiba 84C00AU-6 Z80 8-bit coprocessor -
IC5 ? ? 64K (8Kx8-bit) SRAM -
IC6 Sega 315-5660 -
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 -
IC12 7805 Voltage Regulator -


VA2 [PC BD MD2 VA2 USA]

List of IC's
IC# Brand Name Description Documentation
IC1 Motorola MC68HC000FN12 Processor
-
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-bit coprocessor -
IC5 ? XL J6265AF-10SL -
IC6 Sega 315-5786 (Toshiba T9N13BF) -
IC7 Samsung KM428C64J-10 64K x 8 Bit CMOS Video RAM
-
IC8 Yamaha YM2612 frequency modulation synthesize -
IC9/IC10 -
IC11 Voltage Regulator -
IC12 Sega 315-5684 (Rohm BA6166FS) SOUND NETWORK/HEADPHONE AMP -
IC13 Sanken SKA2195D RGB Encoder -


VA2.3 PC BD MD2 VA2.3 USA

List of IC's
IC# Brand Name Description Documentation
IC1 Motorola MC68000FN12 Processor -
IC2 Toshiba TC511632FL-10 512K (32768 words X 16 bits) Pseudo-SRAM -
IC3 ? ? ? -
IC4 Zilog Z84C0006FEC Zilog Z80 8-bit coprocessor -
IC5 ? XL J6265AF-10SL -
IC6 Sega 315-5786 (Toshiba T9N13BF) VDP and IO chip all-in-one. Doesn't include the YM2612. Used on MD2 VA2 and VA2.3 board revisions. -
IC7 Toshiba TC5281286J-80 1M (128K x 8-bit) VRAM -
IC8 Yamaha YM2612 frequency modulation synthesize -
IC9 SEGA 315-5684 (Rohm BA6166FS) SOUND NETWORK / HEADPHONE AMP -
IC11 Sony CXA1645M RGB Encoder -
IC12 ? 7805 +5V voltage regulator -
IC13 ? 74HC14 HEX SCHMITT-TRIGGER INVERTER -


VA3 [PC BD MD2 VA3 USA HAL]

PC BD MD2 VA3 USA HAL.jpg
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 -


VA4

Model 3

VA1

VA2

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
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 Also

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