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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.
Gun Gabacho (Gaelco, 1998)
Memory Area:bang_map
Address RangeLengthFunctionDescription
0x0000-0xFFFFF1048576ROM(/* ROM */)
0x200000-0x20FFFF65536RAM Write, Sharedgaelco2_vram_w, spriteram (/* Video RAM */)
0x202890-0x2028FF112Device Read/Writegaelco, gaelco_cg1v_device, gaelcosnd_r, gaelcosnd_w (/* Sound Registers */)
0x210000-0x211FFF8192RAM Write, Sharedgaelco2_palette_w, paletteram (/* Palette */)
0x218004-0x2180074Write Only, Sharedvregs (/* Video Registers */)
0x218004-0x2180096Read Only(/* Video Registers */)
0x218008-0x2180092Write NOP(/* CLR INT Video */)
0x300000-0x3000034Writegaelco2_coin2_w (/* Coin Counters */)
0x300000-0x3000012Read PortP1
0x300002-0x3000032Read NOP(/* Random number generator? */)
0x300008-0x3000092Writegaelco2_eeprom_data_w (/* EEPROM data */)
0x30000A-0x30000B2Writegaelco2_eeprom_sk_w (/* EEPROM serial clock */)
0x30000C-0x30000D2Writegaelco2_eeprom_cs_w (/* EEPROM chip select */)
0x300010-0x3000112Read PortP2
0x300020-0x3000212Read PortCOIN
0x310000-0x3100012Read, Writep1_gun_x, bang_clr_gun_int_w (/* Gun 1P X */ /* CLR INT Gun */)
0x310002-0x3100032Readp2_gun_x (/* Gun 2P X */)
0x310004-0x3100052Readp1_gun_y (/* Gun 1P Y */)
0x310006-0x3100072Readp2_gun_y (/* Gun 2P Y */)
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
0x0000-0x7FFFF524288bang-a.ic16CRC(3b63acfc),GFX only (Fluke: 23E0)
0x80000-0xFFFFF524288bang-a.ic17CRC(72865b80),GFX only (Fluke: 4B76)
0x100000-0x17FFFF524288bang18.ic18CRC(2056b1ad),Sound only (Fluke: 7C78)
0x200000-0x27FFFF524288bang-a.ic9CRC(3cb86360),GFX only (Fluke: A0B5)
0x280000-0x2FFFFF524288bang-a.ic10CRC(03fdd777),GFX only (Fluke: D46F)
0x300000-0x37FFFF524288bang11.ic11CRC(2088d15c),Sound only (Fluke: CB5D)
0x400000-0x47FFFF524288bang-a.ic1CRC(965d0ad9),GFX only (Fluke: B7D7)
0x480000-0x4FFFFF524288bang-a.ic2CRC(8ea261a7),GFX only (Fluke: 33F3)
0x500000-0x57FFFF524288bang3.ic3CRC(d3da5d4f),Sound only (Fluke: 78ED)
0x600000-0x67FFFF524288bang-a.ic20CRC(4b828f3c),GFX only (Fluke: 1AC9)
0x680000-0x6FFFFF524288bang-a.ic13CRC(d1146b92),GFX only (Fluke: 7AC1)
0x700000-0x77FFFF524288bang5.ic5CRC(9bee444c),Sound only (Fluke: 83)
0x800000-0x87FFFF524288bang-a.ic21CRC(531ce3b6),GFX only (Fluke: E5F4)
0x880000-0x8FFFFF524288bang-a.ic14CRC(f8e1cf84),GFX only (Fluke: A6D7)
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