Memory Map

The following is a memory map that was generated based on the MAME source code (.180).  This information is only as accurate as the MAME driver is.  If you see any errors, please let me know what that error is.
 
The Memory Area is related to where the information is from (CPU, Sound Board, etc..), and it may also reflect what it has in common with other hardware.
Memory Area:wrally2_map
Address RangeLengthFunctionDescription
0x0000-0xFFFFF1048576ROM(/* ROM */)
0x200000-0x20FFFF65536RAM Write, Sharedgaelco2_vram_w, spriteram (/* Video RAM */)
0x202890-0x2028FF112Device Read/Writegaelco, gaelco_gae1_device, gaelcosnd_r, gaelcosnd_w (/* Sound Registers */)
0x210000-0x211FFF8192RAM Write, Sharedgaelco2_palette_w, paletteram (/* Palette */)
0x212000-0x213FFF8192RAM(/* Extra RAM */)
0x218004-0x2180096RAM, Sharedvregs (/* Video Registers */)
0x300000-0x3000012Read PortIN0 (/* DIPSW #2 + Inputs 1P */)
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick RightActive Low
0x0008Joystick LeftActive Low
0x0010P1 Acc.Active Low
0x0020P1 GearActive High
0x0040SpecialActive High
0x0080Start 1Active Low
0x0000CommonActive High
0x0200IndependentActive High
0x0400Demo_SoundsActive High
0x0000OffActive High
0x0400OnActive High
0x0000Pot WheelActive High
0x0800JoystickActive High
0x0000Pot WheelActive High
0x1000JoystickActive High
0x0000OneActive High
0x2000TwoActive High
0xc000DifficultyActive High
0x4000EasyActive High
0xc000NormalActive High
0x8000HardActive High
0x0000HardestActive High
0x300002-0x3000032Read PortIN1 (/* DIPSW #1 */)
0x00ffUnusedActive Low
0x0100Free_PlayActive High
0x0100OffActive High
0x0000OnActive High
0x0000Start 2C/Continue 1CActive High
0x0200Start 1C/Continue 1CActive High
0x1c00Coin_BActive High
0x18004C_1CActive High
0x10003C_1CActive High
0x08002C_1CActive High
0x1c001C_1CActive High
0x00002C_3CActive High
0x0c001C_2CActive High
0x14001C_3CActive High
0x04001C_4CActive High
0xe000Coin_AActive High
0xc0004C_1CActive High
0x80003C_1CActive High
0x40002C_1CActive High
0xe0001C_1CActive High
0x00002C_3CActive High
0x60001C_2CActive High
0xa0001C_3CActive High
0x20001C_4CActive High
0x300004-0x3000052Read PortIN2 (/* Inputs 2P + COINSW */)
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick RightActive Low
0x0008Joystick LeftActive Low
0x0010P2 Acc.Active Low
0x0020P2 GearActive High
0x0040SpecialActive High
0x0080Start 2Active Low
0x0100Coin 1Active Low
0x0400Coin 2Active Low
0xfa00UnknownActive Low
0x300006-0x3000072Read PortIN3 (/* SERVICESW */)
0x00ffUnusedActive Low
0x0100Service 1Active Low
0x0200Service 3Active Low
0x0400Service 2Active Low
0xf800UnknownActive Low
0x400000-0x40001118Writewrally2_coin_w (/* Coin Counters */)
0x400028-0x4000292Writewrally2_adc_clk (/* ADCs clock-in line */)
0x400030-0x4000312Writewrally2_adc_cs (/* ADCs chip select line */)
0xFE0000-0xFEFFFF65536RAM(/* Work RAM */)
 

ROM Map for this game

 
This is the ROM map for the game.  This should tell you what address the ROM is at, how big it is, what it's used for.   
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288wr2.16dCRC(ad26086b),GFX only (Fluke: 8AC3)
0x80000-0xFFFFF524288wr2.17dCRC(c1ec0745),GFX only (Fluke: 954C)
0x100000-0x17FFFF524288wr2.18dCRC(e3617814),Sound only (Fluke: D67C)
0x180000-0x1FFFFF524288wr2.19dCRC(2dae988c),Sound only (Fluke: 4D4F)
0x200000-0x27FFFF524288wr2.09dCRC(372d70c8),GFX only (Fluke: 016B)
0x280000-0x2FFFFF524288wr2.10dCRC(5db67eb3),GFX only (Fluke: 6B9F)
0x300000-0x37FFFF524288wr2.11dCRC(ae66b97c),Sound only (Fluke: 4514)
0x380000-0x3FFFFF524288wr2.12dCRC(6dbdaa95),Sound only (Fluke: CD26)
0x400000-0x47FFFF524288wr2.01dCRC(753a138d),GFX only (Fluke: 0800)
0x480000-0x4FFFFF524288wr2.02dCRC(9c2a723c),GFX only (Fluke: 1953)
0x600000-0x67FFFF524288wr2.20dCRC(4f7ade84),GFX only (Fluke: CECB)
0x680000-0x6FFFFF524288wr2.13dCRC(a4cd32f8),GFX only (Fluke: 6622)
0x800000-0x87FFFF524288wr2.21dCRC(899b0583),GFX only (Fluke: A7CC)
0x880000-0x8FFFFF524288wr2.14dCRC(6eb781d5),GFX only (Fluke: 5DF7)
Memory Area:mcu
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768wr2_dallas.bin
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