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:main_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM, Write NOP
0xFE0000-0xFE1FFF8192RAM, Sharedspriteram
0xFE4000-0xFE40012Read Port, WriteP1_P2, supduck_4000_w
0x0001Joystick RightActive Low
0x0002Joystick LeftActive Low
0x0004Joystick DownActive Low
0x0008Joystick UpActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080Button 4Active Low
0x0100Joystick RightActive Low
0x0200Joystick LeftActive Low
0x0400Joystick DownActive Low
0x0800Joystick UpActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000Button 3Active Low
0x8000Button 4Active Low
0xFE4002-0xFE40032Read Port, WriteSYSTEM, supduck_4002_w
0x00ffUnknownActive Low
0x0100Start 1Active Low
0x0200Start 2Active Low
0x0400CustomActive Low
0x0800UnknownActive Low
0x1000UnknownActive Low
0x2000Service 1Active Low
0x4000Coin 1Active Low
0x8000Coin 2Active Low
0xFE4004-0xFE40052Read PortDSW
0x0007CoinageActive High
0x00005C_1CActive High
0x00014C_1CActive High
0x00023C_1CActive High
0x00032C_1CActive High
0x00071C_1CActive High
0x00061C_2CActive High
0x00051C_3CActive High
0x00041C_4CActive High
0x0008UnknownActive High
0x0008OffActive High
0x0000OnActive High
0x0010Demo_SoundsActive High
0x0000OffActive High
0x0010OnActive High
0x0000OffActive High
0x0020OnActive High
0x00c0LivesActive High
0x00c02Active High
0x00803Active High
0x00404Active High
0x00005Active High
0x0100UnknownActive High
0x0100OffActive High
0x0000OnActive High
0x0200UnknownActive High
0x0200OffActive High
0x0000OnActive High
0x0400UnknownActive High
0x0400OffActive High
0x0000OnActive High
0x0800UnknownActive High
0x0800OffActive High
0x0000OnActive High
0x1000UnknownActive High
0x1000OffActive High
0x0000OnActive High
0x2000UnknownActive High
0x2000OffActive High
0x0000OnActive High
0x4000OffActive High
0x0000OnActive High
0xFE8000-0xFE80078Writesupduck_scroll_w
0xFE800E-0xFE800F2Write NOP(// watchdog or irqack)
0xFEC000-0xFECFFF4096RAM Write, Sharedtext_videoram_w, textvideoram
0xFF0000-0xFF3FFF16384RAM Write, Sharedback_videoram_w, backvideoram
0xFF4000-0xFF7FFF16384RAM Write, Sharedfore_videoram_w, forevideoram
0xFF8000-0xFF87FF2048RAM Device Write, Sharedpalette, palette_device, write, palette
0xFFC000-0xFFFFFF16384RAM(/* working RAM */)
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x87FF2048RAM
0x90001Writeokibank_w
0x98001Device Read/Writeoki, okim6295_device, read, write
0xA0001Device 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
0x0000-0x7FFF327684.su6CRC(d75863ea)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF327683.cu15CRC(b1cacca4)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF1310727.uu29CRC(f3251b20)
0x20000-0x3FFFF1310728.uu30CRC(03c60cbd)
0x40000-0x5FFFF1310729.uu31CRC(9b6d3430)
0x60000-0x7FFFF13107210.uu32CRC(beed2616)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF13107211.ul29CRC(1b6958a4)
0x20000-0x3FFFF13107212.ul30CRC(3e6bd24b)
0x40000-0x5FFFF13107213.ul31CRC(bff7b7cd)
0x60000-0x7FFFF13107214.ul32CRC(97a7310b)
Memory Area:gfx4
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF13107218.u2cCRC(33dd0674)
0x20000-0x3FFFF13107217.u1cCRC(21ef14d4)
0x40000-0x5FFFF13107216.u2dCRC(9573d6ec)
0x60000-0x7FFFF13107215.u1dCRC(81bf1f27)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF1310722.su12CRC(745d42fb)
Memory Area:okibank
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF5242881.su13CRC(7fb1ed42)
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