World Rally 2: Twin Racing (MASK ROM version): Difference between revisions

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Line 67: Line 67:
|4x || [[256k x 8|KM428C256J]] || 53,54,55,56
|4x || [[256k x 8|KM428C256J]] || 53,54,55,56
|-
|-
|2x || [[8k x 8|HM3-65764E]] || 32,33
|2x || [[SRAM 8k x 8|HM3-65764E]] || 32,33
|-
|-
|2x || [[32k x 8|CY7C199-20]] || 75,76
|2x || [[32k x 8|CY7C199-20]] || 75,76

Revision as of 21:01, 21 September 2014

EMU Infos
dumper f205v
dump date 17/01/2009
emulator
dev
PCB Infos
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

  • PCB component side

    PCB component side

  • PCB solder side

    PCB solder side

  • Read me

    Read me

  • ROMs

    ROMs

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