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model3.cpp: updated notes on DSB hardware (nw)
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Guru
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1bc83295c7
commit
8dbebbc594
@ -92,11 +92,11 @@ Tilemap entry formats (16-bit wide):
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are the palette select bits for 8bpp and PHI-T5 for 4bpp.
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are the palette select bits for 8bpp and PHI-T5 for 4bpp.
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===================================================================================
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===================================================================================
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Guru-Readme
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Model 3 Hardware Overview.
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Model 3 Hardware Overview
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Sega, 1996-1998
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Sega, 1996-1998
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This document covers all games running on the original Model 3 hardware and is produced with
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This document covers all games running on the original Model 3 hardware with
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reference to a Scud Race PCB and Virtua Fighter 3TB PCB. ALL PCB numbers are identical.
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reference to a Scud Race PCB and Virtua Fighter 3TB PCB. ALL PCB numbers are identical.
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Scud Race runs on the original Sega Model 3 hardware. It's the same PCB as Virtua Fighter 3, there
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Scud Race runs on the original Sega Model 3 hardware. It's the same PCB as Virtua Fighter 3, there
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is no mention of 'Step 1.5' or even 'Step 1.0' on any of the PCBs and there is no 50MHz or
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is no mention of 'Step 1.5' or even 'Step 1.0' on any of the PCBs and there is no 50MHz or
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@ -136,8 +136,6 @@ Virtua Striker 2
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Virtua Striker 2 Version '98
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Virtua Striker 2 Version '98
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[There is an external MPEG PCB used on some games but it was not available for documenting]
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COMM Board
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COMM Board
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----------
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----------
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171-7053B
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171-7053B
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@ -196,6 +194,30 @@ Notes:
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if different, it's likely only for the games that use 64MBit MASKROMs.
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if different, it's likely only for the games that use 64MBit MASKROMs.
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ROMs - Not all sockets are populated. See MAME src for exact ROM usage.
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ROMs - Not all sockets are populated. See MAME src for exact ROM usage.
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(For dumping reference)
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Jumpers centre pin joins
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-------------------------------------------------------
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JP3: 2-3 pin2 of ic 1 to ic 16 and pin 39 of ic 17 to ic 20
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JP4: 2-3 pin2 of ic 1 to ic 16 and pin 39 of ic 17 to ic 20
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JP5: 2-3 pin2 of ic 1 to ic 16 and pin 39 of ic 17 to ic 20
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JP6: 2-3 pin2 of ic 1 to ic 16 and pin 39 of ic 17 to ic 20
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JP7: 2-3 pin2 of ic 22 to ic 25 and pin 39 ic ic21
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JP8: 2-3 pin32 of ic 22 to ic 25
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JP9: 2-3 pin32 of ic 22 to ic 25
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Jumper pos. 1 is +5V
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JP1: 1-2 gnd
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JP2: 2-3 +5v
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Jumper pos. 1 is GND
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Jumper pos. 3 is +5V
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pin1 joins
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-------------------------------
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JP10: 1-2 pin32 of ic 26 to ic 41
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All CROM ROMs are 32M MASK
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ALL VROM ROMs are 16M MASK
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CPU Board
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CPU Board
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---------
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---------
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@ -317,12 +339,69 @@ Notes:
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Other than the revision of the listed chips, the PCBs are identical.
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Other than the revision of the listed chips, the PCBs are identical.
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External MPEG Audio Board
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-------------------------
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This is the first version of the Model 3 Digital Audio Board used
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on Scud Race and is usually just mounted bare onto the outside of
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the main board metal box.
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Harley Davidson (Rev.A)
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837-10084 DIGITAL AUDIO BD SEGA 1993
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Sega, 1997
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171-6614B PC BD
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Sticker: 837-12941
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|-------------------------------------------------|
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| CN3 CN4 CN1 R RCA-1 CN2 RCA-2 |
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| MB84256 PC910 4040 7805 TL062 TL062 D6376 |
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| D71051 SM5840|
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| EPROM.IC2 |------| |
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| Z80 16MHz |NEC | |
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| |D65654| |
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| |--------| |------| |
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| |SEGA | KM68257 |
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| |315-5762| KM68257 |
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| | | KM68257 MB84256 |
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| 20MHz|--------| |
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| MB3771 JP1 JP2 MROM.IC57|
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| 12.288MHz |
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| MROM.IC58|
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| MROM.IC59|
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|DSW(4) G G G G MROM.IC60|
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|-------------------------------------------------|
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Notes:
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Z80 - Clock 4.000MHz [16/4]
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EPROM.IC2 - 27C1001/27C010 EPROM (DIP32)
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- Scud Race : EPR-19612.IC2
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MROM* - 8M/16M Mask ROM (DIP42)
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- Scud Race : MPR-19603/04/05/06
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MB84256 - Fujitsu MB84256 32kx8 SRAM (DIP28)
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KM68257 - Samsung KM68257 32kx8 SRAM (DIP28). On this PCB pin 1 (A14) is grounded with a jumper wire on all 3 chips making it 16k
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PC910 - Sharp PC910 Optocoupler (DIP8)
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4040 - 74HC4040 logic chip
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7805 - 12V to 5V Voltage Regulator
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MB3771 - Fujitsu MB3771 Master Reset IC (DIP8)
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TL062 - Texas Instruments TL062 Low Power JFET-Input Operational Amplifier (DIP8)
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D71051 - NEC uPD71051 Serial Control Unit USART, functionally equivalent to uPD8251 (SOP28)
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D65654 - NEC uPD65654 CMOS Gate Array (QFP100)
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SM5840 - Nippon Precision Circuits SM5840 Digital Audio Multi-Function Digital Filter (DIP18)
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D6376 - NEC uPD6376GS Audio 2-Channel 16-bit D/A converter (DIP16)
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315-5762 - Sega custom chip, probably a NEC or Texas Instruments DSP or MCU, clock input 20MHz (PLCC68)
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R - Red LED
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G - Green LED
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DSW - 4 position DIP switch, all OFF
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JP1 - 1-2 (Select 16M ROM on bank 1 - IC57 & IC58). alt is select 8M
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JP2 - 1-2 (Select 16M ROM on bank 2 - IC59 & IC60). alt is select 8M
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CN1 - 10-pin power input connector
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CN2 - 5-pin connector for Left+/Left-/Right+/Right- Stereo Audio Output
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CN3 - 6-pin connector for MIDI TX+/TX-/RX+/RX- communication
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CN4 - 4-pin connector (not used)
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RCA* - Left/Right RCA Audio Output Jacks (not used)
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This game runs on Sega Model3 Step2 hardware.
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Sega Model 3 Step2 hardware
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---------------------------
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This covers most, if not all of the later MODEL 3 games on Step 2 & 2.1 hardware.
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ROM Board
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ROM Board
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---------
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---------
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@ -352,6 +431,8 @@ ROM Board
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Notes: (ROMs documented are for Harley Davidson)
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VROM00.27 mpr-20378 \
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VROM00.27 mpr-20378 \
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VROM01.26 mpr-20377 |
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VROM01.26 mpr-20377 |
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VROM02.29 mpr-20380 |
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VROM02.29 mpr-20380 |
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@ -491,7 +572,7 @@ CPU Board
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| CN25 |
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| CN25 |
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| RTC72423 (Connector for ) |
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| RTC72423 (Connector for ) |
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| KM4132G271AQ-10 (Protection PCB) |
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| KM4132G271AQ-10 (Protection PCB) |
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| ( not used ) |
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| 32MHz BATT_3V |
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| 32MHz BATT_3V |
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| NEC D71051-10 |
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| NEC D71051-10 |
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@ -573,76 +654,68 @@ Security Board
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315-6050 Lattice ispLSI 2032
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315-6050 Lattice ispLSI 2032
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315-5881 TQFP100 stamped 317-0247-COM for Spikeout FE
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315-5881 TQFP100 stamped 317-0247-COM for Spikeout FE
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External MPEG Audio Board
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-------------------------
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This is the second version of the Model 3 Digital Audio Board used on
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Sega Rally 2, Daytona USA 2 and others and is mounted inside a metal box.
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837-12273 DIGITAL SOUND BD 2 SEGA 1995
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171-7165D PC BD
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Sticker: 837-12273-92
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Sticker: 837-13376
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|-------------------------------------------------|
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| CN1 CN2 R CN5 CN6 LMC6484 CN7 |
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|315-5932 D71051 PQ30RV21 7805 D63210 D63210 |
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|PC910 R 12.288MHz |
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| JP8 |
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|68EC000 315-6028A |
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| 33MHz |
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|KM62256 * |
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|KM62256 MCM6206 |
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| MCM6206 JP4/5/6/7 |
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| JP1/2/3 315-5934|
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|3771 JP10 |
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| JP9 |
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| EPROM.IC2 |
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| RGRG MROM.IC18 MROM.IC20 MROM.IC22 MROM.IC24 |
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|DSW(4) MROM.IC19 MROM.IC21 MROM.IC23 MROM.IC25|
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|-------------------------------------------------|
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Notes:
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68000 - Motorola 68EC000FN12 CPU, clock 11.000MHz [33/3] (PLCC68)
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EPROM.IC2 - 27C1024 EPROM (DIP40)
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- Sega Rally 2 : EPR-20641.IC2
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- Daytona 2 : EPR-20886.IC2
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MROM* - Mask ROM (DIP42)
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- Sega Rally 2 : MPR-20637/38/39/40
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- Daytona 2 : MPR-20887/88/89/90
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KM62256 - Samsung KM62256 32kx8 SRAM (SOP28)
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MCM6206 - Motorola MCM6206 32kx8 SRAM (SOP28)
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PC910 - Sharp PC910 Optocoupler (DIP8)
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7805 - 12V to 5V Voltage Regulator
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PQ30RV21 - Sharp PQ30RV21 3.3V Voltage Regulator
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MB3771 - Fujitsu MB3771 Master Reset IC (SOIC8)
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315-5934 - GAL16V8 (PLCC20)
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315-5932 - GAL16V8 (PLCC20)
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LMC6484 - Texas Instruments LMC6484IM CMOS Quad Rail-to-Rail Input and Output Operational Amplifier (SOIC14)
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D71051 - NEC uPD71051 Serial Control Unit USART, functionally equivalent to uPD8251 (SOP28)
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D63210 - NEC uPD63210 16-bit D/A Converter with built-in Digital Filter for Audio (SOP28)
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315-6028A - Sega custom chip, probably a NEC DSP, clock input 12.228MHz (QFP100)
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* - Unpopulated position on bottom side of PCB for a NEC uPD77016 DSP. The Sega chip above may be similar to this
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R - Red LED
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G - Green LED
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DSW - 4 position DIP switch, all OFF
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JP1/2/3 - Jumpers to configure ROMs
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JP4/5/6/7 - Jumpers to configure ROMs
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JP8 - Jumper tied to pin 26 (IPL1) of MC68EC000
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JP9/10 - Jumpers to configure ROMs, tied to GAL16V8 315-5934
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CN1 - 6-pin connector for MIDI TX+/TX-/RX+/RX- communication
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CN2 - 4-pin connector (not used)
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CN5 - 10-pin power input connector
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CN6 - 5-pin connector for Left+/Left-/Right+/Right- Stereo Audio Output
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CN7 - 5-pin connector (not used)
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===================================================================================
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===================================================================================
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Scud Race
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Sega, 1996
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Tis game runs on Sega Model 3 Step 1.5 hardware
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Sound Board (bolted to outside of the metal box)
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-----------
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PCB Layout
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----------
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PCB Number: 837-10084 DIGITAL AUDIO BD (C) SEGA 1993
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---------------------------------------------------------------
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84256 D71051GU-10 D6376 SM5840
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epr-19612
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Z80 16MHz SEGA D65654GF102
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315-5762 (QFP100)
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(PLCC68)
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20MHz KM68257
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KM68257 84256
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KM68257
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12.288MHz mpr-19603
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mpr-19604
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mpr-19605
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DSW1 mpr-19606
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----------------------------------------------------------------
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Jumpers
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JP1: 1-2 (Select 16M ROM on bank 1 - ic57 & ic58)
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JP2: 1-2 (Select 16M ROM on bank 2 - ic59 & ic60)
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ROM Board
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---------
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PCB Number: 837-11860 MODEL3 ROM BOARD (C) SEGA 1995
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(For dumping reference)
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Jumpers centre pin joins
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-------------------------------------------------------
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JP3: 2-3 pin2 of ic 1 to 16 and pin 39 of ic 17 to 20
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JP4: 2-3 pin2 of ic 1 to 16 and pin 39 of ic 17 to 20
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JP5: 2-3 pin2 of ic 1 to 16 and pin 39 of ic 17 to 20
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JP6: 2-3 pin2 of ic 1 to 16 and pin 39 of ic 17 to 20
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JP7: 2-3 pin2 of ic 22 to 25 and pin 39 ic ic21
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JP8: 2-3 pin32 of ic 22 to 25
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JP9: 2-3 pin32 of ic 22 to 25
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Jumper pos. 1 is +5V
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JP1: 1-2 gnd
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JP2: 2-3 +5v
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Jumper pos. 1 is GND
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Jumper pos. 3 is +5V
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pin1 joins
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-------------------------------
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JP10: 1-2 pin32 of ic 26 to 41
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All CROM ROMs are 32M MASK
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ALL VROM ROMs are 16M MASK
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*/
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/*
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magtruck locations of interest
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magtruck locations of interest
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000006ee (word) - incremented each vblank, used by mainline to busywait.
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000006ee (word) - incremented each vblank, used by mainline to busywait.
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Reference in New Issue
Block a user