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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.
Big Striker (bootleg, 1992)
Memory Area:bigstrkb_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM
0xC2004-0xC20052Write NOP
0xC200C-0xC200D2Write NOP
0xC2104-0xC21052Write NOP
0xC2108-0xC21092Write NOP
0xC2200-0xC22012Write NOP
0xC2208-0xC22092Write NOP
0xC2308-0xC23092Write NOP(// bit 0 of DSW1 (flip screen) - use vregs)
0xD0000-0xDFFFF65536RAM(// 0xd2000 - 0xd3fff? 0xd8000?)
0xE0000-0xE3FFF16384RAM Write, Sharedvideoram2_w, videoram2
0xE8000-0xEBFFF16384RAM Write, Sharedvideoram3_w, videoram3
0xEC000-0xEFFFF16384RAM Write, Sharedvideoram_w, videoram
0xF0000-0xF7FFF32768RAM
0xF8000-0xF87FF2048RAM Device Write, Sharedpalette, palette_device, write, palette
0xF8800-0xFFFFF30720RAM
0x1F0000-0x1F7FFF32768RAM
0x1F8000-0x1F87FF2048RAM, Sharedspriteram
0x1F8800-0x1FFFFF30720RAM
0x700000-0x7000012Read PortDSW0
0x00074C_1CActive High
0x00083C_1CActive High
0x00092C_1CActive High
0x000f1C_1CActive High
0x00062C_3CActive High
0x000e1C_2CActive High
0x000d1C_3CActive High
0x000c1C_4CActive High
0x000b1C_5CActive High
0x000a1C_6CActive High
0x0000Free_PlayActive High
0x00704C_1CActive High
0x00803C_1CActive High
0x00902C_1CActive High
0x00f01C_1CActive High
0x00602C_3CActive High
0x00e01C_2CActive High
0x00d01C_3CActive High
0x00c01C_4CActive High
0x00b01C_5CActive High
0x00a01C_6CActive High
0x0000Free_PlayActive High
0x700002-0x7000032Read PortDSW1
0x0001OffActive High
0x0000OnActive High
0x0002EasyActive High
0x0006NormalActive High
0x0004HardActive High
0x0000HardestActive High
0x0008SlowActive High
0x0018NormalActive High
0x0010FastActive High
0x0000FastestActive High
0x00001 CreditActive High
0x00402 CreditsActive High
0x0080OffActive High
0x0000OnActive High
0x700004-0x7000052Read PortSYSTEM
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0010UnknownActive Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x70000A-0x70000B2Read PortP2
0x70000C-0x70000D2Read PortP1
0x700020-0x7000278Write Only, Sharedvidreg1
0x700030-0x7000378Write Only, Sharedvidreg2
0xB00000-0xB000012Write NOP
0xE00000-0xE000012Device Read/Write 8-bitoki1, okim6295_device, read, write, 0x00ff
0xE00002-0xE000032Device Read/Write 8-bitoki2, okim6295_device, read, write, 0x00ff
0xE00008-0xE000092Write NOP
0xE0000C-0xE0000D2Write NOP
0xF00000-0xFFFFFF1048576RAM
 

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
0x0000-0xFFFF65536footgaa.005CRC(d97c9bfe) (Fluke: 8953)
0x10000-0x1FFFF65536footgaa.006CRC(1ae56e8b) (Fluke: 70DB)
0x20000-0x2FFFF65536footgaa.007CRC(a45fa6b6) (Fluke: 9889)
0x30000-0x3FFFF65536footgaa.008CRC(2700888c) (Fluke: C81C)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288footgaa.001CRC(0e440841) (Fluke: 8A81)
0x80000-0xFFFFF524288footgaa.002CRC(92a15164) (Fluke: 5E5C)
0x100000-0x17FFFF524288footgaa.003CRC(da127b89) (Fluke: 2C4A)
0x180000-0x1FFFFF524288footgaa.004CRC(3e6b0d92) (Fluke: 89)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072footgaa.011CRC(c3924fea) (Fluke: 16D0)
0x0000-0x1FFFF131072footgaa.011CRC(c3924fea) (Fluke: 16D0)
0x20000-0x3FFFF131072footgaa.012CRC(a581e9d7) (Fluke: 5DF1)
0x40000-0x5FFFF131072footgaa.013CRC(26ce4b7f) (Fluke: D6C9)
0x40000-0x5FFFF131072footgaa.013CRC(26ce4b7f) (Fluke: D6C9)
0x60000-0x7FFFF131072footgaa.014CRC(c3cfc500) (Fluke: 14AC)
0x60000-0x7FFFF131072footgaa.014CRC(c3cfc500) (Fluke: 14AC)
Memory Area:oki1
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144footgaa.010CRC(53014576) (Fluke: 2987)
0x0000-0x3FFFF262144footgaa.010CRC(53014576) (Fluke: 2987)
Memory Area:oki2
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144footgaa.009CRC(19bf0896) (Fluke: 578A)
0x0000-0x3FFFF262144footgaa.009CRC(19bf0896) (Fluke: 578A)
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