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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.
Zero Team USA (Seibu Kaihatsu (Fabtek license), 1993)
Memory Area:zeroteam_mem
Address RangeLengthFunctionDescription
0x0000-0x03FF1024RAM
0x0470-0x04712Write NOP
0x068E-0x068F2Write NOP(// irq ack / sprite buffering?)
0x06CC-0x06CD2Write NOP
0x0700-0x071F32Read/Writeraiden2_sound_comms_r,raiden2_sound_comms_w
0x0740-0x07412Read PortDSW
0x0744-0x07452Read PortP1_P2
0x0748-0x07492Read PortP3_P4
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080UnusedActive Low
0x0100Joystick UpActive Low
0x0200Joystick DownActive Low
0x0400Joystick LeftActive Low
0x0800Joystick RightActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000Button 3Active Low
0x8000UnusedActive Low
0x0007Coin_AActive High
0x00004C_1CActive High
0x00013C_1CActive High
0x00022C_1CActive High
0x00071C_1CActive High
0x00061C_2CActive High
0x00051C_3CActive High
0x00031C_4CActive High
0x00041C_6CActive High
0x0038Coin_BActive High
0x00004C_1CActive High
0x00083C_1CActive High
0x00102C_1CActive High
0x00381C_1CActive High
0x00301C_2CActive High
0x00281C_3CActive High
0x00181C_4CActive High
0x00201C_6CActive High
0x0040NormalActive High
0x0000X 2Active High
0x0080Flip_ScreenActive High
0x0080OffActive High
0x0000OnActive High
0x0300DifficultyActive High
0x0300NormalActive High
0x0200HardActive High
0x0100EasyActive High
0x0000Very_HardActive High
0x0c00LivesActive High
0x0c002Active High
0x08004Active High
0x04003Active High
0x00001Active High
0x3000Bonus_LifeActive High
0x30001000000Active High
0x20002000000Active High
0x1000Every 1000000Active High
0x0000No ExtendActive High
0x0000OffActive High
0x4000OnActive High
0x8000UnknownActive High
0x8000OffActive High
0x0000OnActive High
0x0010Start 3Active Low
0x0020Start 4Active Low
0x00c0UnusedActive Low
0x07002PActive High
0x06003P 3SlotActive High
0x05004P 4SlotActive High
0x04003P 2SlotActive High
0x03002P x2Active High
0x02004P 2SlotActive High
0x01002P FreeplayActive High
0x00004P FreeplayActive High
0x1000UnknownActive High
0x1000OffActive High
0x0000OnActive High
0x2000UnknownActive High
0x2000OffActive High
0x0000OnActive High
0x4000UnknownActive High
0x4000OffActive High
0x0000OnActive High
0x8000UnknownActive High
0x8000OffActive High
0x0000OnActive High
0x074C-0x074D2Read PortSYSTEM
0x0800-0xB7FF45056RAM
0xB800-0xBFFF2048RAM(// _WRITE(raiden2_background_w) AM_SHARE("back_data"))
0xC000-0xC7FF2048RAM(// _WRITE(raiden2_foreground_w) AM_SHARE("fore_data"))
0xC800-0xCFFF2048RAM(// _WRITE(raiden2_midground_w) AM_SHARE("mid_data"))
0xD000-0xDFFF4096RAM(// _WRITE(raiden2_text_w) AM_SHARE("text_data"))
0xE000-0xEFFF4096RAM(// _DEVWRITE("palette", palette_device, write) AM_SHARE("palette"))
0xF000-0xFFFF4096RAM, Sharedsprites
0x10000-0x1FFFF65536RAM
0x20000-0x2FFFF65536ROM Bankmainbank1
0x30000-0x3FFFF65536ROM Bankmainbank2
0x40000-0xFFFFF786432ROM, Regionmaincpu, 0x40000
Memory Area:zeroteam_sound_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192ROM
0x2000-0x27FF2048RAM
0x40001Device Writeseibu_sound, seibu_sound_device, pending_w
0x40011Device Writeseibu_sound, seibu_sound_device, irq_clear_w
0x40021Device Writeseibu_sound, seibu_sound_device, rst10_ack_w
0x40031Device Writeseibu_sound, seibu_sound_device, rst18_ack_w
0x4008-0x40092Device Read/Writeseibu_sound, seibu_sound_device, ym_r, ym_w
0x4010-0x40112Device Readseibu_sound, seibu_sound_device, soundlatch_r
0x40121Device Readseibu_sound, seibu_sound_device, main_data_pending_r
0x40131Read PortCOIN
0x4018-0x40192Device Writeseibu_sound, seibu_sound_device, main_data_w
0x401A1Device Writeseibu_sound, seibu_sound_device, bank_w
0x401B1Device Writeseibu_sound, seibu_sound_device, coin_w
0x60001Device Read/Writeoki, okim6295_device, read, write
0x8000-0xFFFF32768ROM Bankseibu_bank1
 

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
0x0000-0x7FFF32768seibu__5.u1110.5bCRC(7ec1fbc3) (Fluke: F235)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576musha_back-1.u075.4sCRC(8b7f9219) (Fluke: 813B)
0x100000-0x17FFFF524288musha_back-2.u0714.2sCRC(ce61c952) (Fluke: 7E79)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144seibu__6.u105.4aCRC(48be32b1) (Fluke: AB4F)
Memory Area:pals
Address RangeLengthLabel/LocationDescription
0x0000-0x0287648v3c003.ami18cv8p-15.u0619.jed
0x0000-0x0287648v3c002.tibpal16l8-25.u0322.jed
0x0000-0x0287648v3c004x.ami18cv8pc-25.u0310.jed
Memory Area:user2
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144copx-d2.u0313.6nCRC(a6732ff9) (Fluke: A883)
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