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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.
G.I. Joe (Konami, 1992)
Memory Area:gijoe_map
Address RangeLengthFunctionDescription
0x0000-0xFFFFF1048576ROM
0x100000-0x100FFF4096RAM, Sharedspriteram (// Sprites)
0x110000-0x1100078Device Readk053246, k053247_device, k053246_reg_word_r
0x110000-0x1100078Device Writek053246, k053247_device, k053246_word_w
0x120000-0x121FFF8192Device Read/Writek056832, k056832_device, ram_word_r, ram_word_w (// Graphic planes)
0x122000-0x123FFF8192Device Read/Writek056832, k056832_device, ram_word_r, ram_word_w (// Graphic planes mirror read)
0x130000-0x131FFF8192Device Readk056832, k056832_device, rom_word_r (// Passthrough to tile roms)
0x160000-0x1600078Device Readk056832, k056832_device, b_word_r
0x160000-0x1600078Device Writek056832, k056832_device, b_word_w (// VSCCS (board dependent))
0x170000-0x1700012Write NOP(// Watchdog)
0x180000-0x18FFFF65536RAM, Sharedworkram (// Main RAM. Spec. 180000-1803ff, 180400-187fff)
0x190000-0x190FFF4096RAM Device Write, Sharedpalette, palette_device, write, palette
0x1A0000-0x1A001F32Device Writek053251, k053251_device, lsb_w
0x1A0000-0x1A001F32Device Readk053251, k053251_device, lsb_r
0x1B0000-0x1B003F64Device Readk056832, k056832_device, word_r
0x1B0000-0x1B003F64Device Writek056832, k056832_device, word_w
0x1C0000-0x1C001F32RAM
0x1C000C-0x1C000D2Writesound_cmd_w
0x1C0014-0x1C00152Readsound_status_r
0x1D0000-0x1D00012Writesound_irq_w
0x1E0000-0x1E00012Read PortP1_P2
0x0080MonoActive High
0x0000StereoActive High
0x8000CommonActive High
0x0000IndependentActive High
0x1E0002-0x1E00032Read PortP3_P4
0x0080PlayersActive High
0x00802Active High
0x00004Active High
0x1E4000-0x1E40012Read PortSYSTEM
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Coin 3Active Low
0x0008Coin 4Active Low
0x0100Service 1Active Low
0x0200Service 2Active Low
0x0400Service 3Active Low
0x0800Service 4Active Low
0x1E4002-0x1E40032Read PortSTART
0x0001Start 1Active Low
0x0002Start 2Active Low
0x0004Start 3Active Low
0x0008Start 4Active Low
0x0100SpecialActive High
0x0200SpecialActive High
0x1E8000-0x1E80012Read/Writecontrol2_r, control2_w
0x1F0000-0x1F00012Device Readk053246, k053247_device, k053246_word_r
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0xFFFF65536ROM
0xF000-0xF7FF2048RAM
0xF800-0xFA2F560Device Read/Writek054539, k054539_device, read, write
0xFC001Device Writesoundlatch2, generic_latch_8_device, write
0xFC021Device Readsoundlatch, generic_latch_8_device, read
 

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
0x0000-0xFFFF65536069a01.7cCRC(74172b99) (Fluke: 97A6)
0x0000-0xFFFF65536069a01.7cCRC(74172b99) (Fluke: 97A6)
0x0000-0xFFFF65536069a01.7cCRC(74172b99) (Fluke: 97A6)
0x0000-0xFFFF65536069a01.7cCRC(74172b99) (Fluke: 97A6)
Memory Area:eeprom
Address RangeLengthLabel/LocationDescription
0x0000-0x007F128er5911.7dCRC(a0d50a79)
0x0000-0x007F128er5911.7dCRC(a0d50a79)
0x0000-0x007F128er5911.7dCRC(a0d50a79)
0x0000-0x007F128er5911.7dCRC(a0d50a79)
Memory Area:k054539
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152069a04.1eCRC(11d6dcd6) (Fluke: E63E)
0x0000-0x1FFFFF2097152069a04.1eCRC(11d6dcd6) (Fluke: E63E)
0x0000-0x1FFFFF2097152069a04.1eCRC(11d6dcd6) (Fluke: E63E)
0x0000-0x1FFFFF2097152069a04.1eCRC(11d6dcd6) (Fluke: E63E)
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