World Rally 2: Twin Racing (MASK ROM version)
From Citylan
| dumper | f205v |
| dump date | 17/01/2009 |
| emulator | |
| dev |
| name | 761 |
| description | World Rally 2: Twin Racing (different EPROMs) |
| year | 1995 |
| manufacturer | Gaelco |
Technical references
CPUs
| QTY | Type | clock | position | function |
|---|---|---|---|---|
| 1x | MC68000P12 | u48 | 16/32-bit Microprocessor - main | |
| 1x | custom GAE1-449 | u57 | main | |
| 1x | DS5002FP | u47 | Secure Microprocessor Chip | |
| 1x | oscillator | 26.000MHz | xtal1 | |
| 1x | oscillator | 34.000MHz | xtal2 |
ROMs
| QTY | Type | position | status |
|---|---|---|---|
| 2x | NM27C040Q | 62,63 | dumped |
| 1x | MASKROM 1Mx8 | 68 | dumped |
| 2x | MASKROM 1Mx16 | 69,70 | dumped |
RAMs
| QTY | Type | position |
|---|---|---|
| 4x | KM428C256J | 53,54,55,56 |
| 2x | HM3-65764E | 32,33 |
| 2x | CY7C199-20 | 75,76 |
| 2x | HM3-65756H | 49,50 |
| 1x | MB84256A | 34 |
PLDs
| QTY | Type | position | status |
|---|---|---|---|
| 1x | TI F20L8-25CNT | 39 | read protected |
| 1x | TI F16R8-15CN | 27 | read protected |
| 1x | TI F16L8-25CN | 30 | read protected |
Others
1x JAMMA edge connector
1x 6 legs connector (conn1)
1x 15 legs connector (conn2)
1x 4 legs connector (conn4)
2x trimmer (volume)(p1,p2)
1x battery 3V
Notes
This is the same PCB revision (950510-1) as already documented in MAME source gaelco2.c, but with a number of differences:
1) Gaelco custom chip is 449 instead of 506
2) total EPROMs size is less than in revision 950510 (more specifically it looks like the content of 09,10,16,17 is missing)
The PCB is totally dead, therefore I can not make any screen comparison.
Files
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PCB component side
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PCB solder side
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Read me
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ROMs
761
