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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 Karnak (Gaelco, 1991)
Memory Area:bigkarnk_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM(/* ROM */)
0x100000-0x101FFF8192RAM Write, Sharedgaelco_vram_w, videoram (/* Video RAM */)
0x102000-0x103FFF8192RAM(/* Screen RAM */)
0x108000-0x1080078Write Only, Sharedvregs (/* Video Registers */)
0x200000-0x2007FF2048RAM Device Write, Sharedpalette, palette_device, write, palette (/* Palette */)
0x440000-0x440FFF4096RAM, Sharedspriteram (/* Sprite RAM */)
0x700000-0x7000012Read PortDSW1
0x700002-0x7000032Read PortDSW2
0x0007DifficultyActive High
0x00070Active High
0x00061Active High
0x00052Active High
0x00043Active High
0x00034Active High
0x00025Active High
0x00016Active High
0x00007Active High
0x0018LivesActive High
0x00181Active High
0x00102Active High
0x00083Active High
0x00004Active High
0x0020Demo_SoundsActive High
0x0020OffActive High
0x0000OnActive High
0x0000OffActive High
0x0040OnActive High
0x700004-0x7000052Read PortP1
0x700006-0x7000072Read PortP2
0x700008-0x7000092Read PortSERVICE
0x0001Service 1Active Low
0x0002OffActive High
0x0000OnActive High
0x00fcUnusedActive Low
0x70000A-0x70003B50Writebigkarnk_coin_w (/* Coin Counters + Coin Lockout */)
0x70000E-0x70000F2Writebigkarnk_sound_command_w (/* Triggers a FIRQ on the sound CPU */)
0xFF8000-0xFFFFFF32768RAM(/* Work RAM */)
Memory Area:bigkarnk_snd_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048RAM(/* RAM */)
0x0800-0x08012Device Read/Writeoki, okim6295_device, read, write (/* OKI6295 */)
0x0A00-0x0A012Device Read/Writeymsnd, ym3812_device, read, write (/* YM3812 */)
0x0B001Device Readsoundlatch, generic_latch_8_device, read (/* Sound latch */)
0x0C00-0xFFFF62464ROM(/* ROM */)
 

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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536d5CRC(3b73b9c5) (Fluke: 7805)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288h5CRC(20e239ff) (Fluke: B213)
0x100000-0x17FFFF524288h10CRC(ab442855) (Fluke: 0FEB)
0x200000-0x27FFFF524288h8CRC(83dce5a3) (Fluke: FFC8)
0x300000-0x37FFFF524288h6CRC(24e84b24) (Fluke: F764)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144d1CRC(26444ad1) (Fluke: A557)
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