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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.
Raiden (Seibu Kaihatsu (Fabtek license), 1990)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x6FFF28672RAM
0x7000-0x7FFF4096RAM, Sharedspriteram
0x8000-0x8FFF4096RAM, Sharedshared_ram
0xA000-0xA00D14Device Read/Writeseibu_sound, seibu_sound_device, main_word_r, main_word_w
0xC000-0xC7FF2048Write, Sharedraiden_text_w, videoram
0xE000-0xE0012Read PortP1_P2
0xE002-0xE0032Read PortDSW
0xE004-0xE0052Write NOP(// watchdog?)
0xE006-0xE0072Write 8-bitraiden_control_w, 0x00ff
0xF000-0xF03F64Write Only, Sharedscroll_ram
0xA0000-0xFFFFF393216ROM
Memory Area:raiden_sound_map
Address RangeLengthFunctionDescription
0x0000-0xFFFF65536Device Readsei80bu, sei80bu_device, data_r
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
0x40071Device Writeseibu_sound, seibu_sound_device, bank_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
0x401B1Device Writeseibu_sound, seibu_sound_device, coin_w
0x60001Device Read/Writeoki, okim6295_device, read, write
Memory Area:raidenu_main_map
Address RangeLengthFunctionDescription
0x0000-0x6FFF28672RAM
0x7000-0x7FFF4096RAM, Sharedspriteram
0x8000-0x803F64Write Only, Sharedscroll_ram
0xA000-0xAFFF4096RAM, Sharedshared_ram
0xB000-0xB0012Read PortP1_P2
0xB002-0xB0032Read PortDSW
0xB004-0xB0052Write NOP(// watchdog?)
0xB006-0xB0072Write 8-bitraiden_control_w, 0x00ff
0xC000-0xC7FF2048Write, Sharedraiden_text_w, videoram
0xD000-0xD00D14Device Read/Writeseibu_sound, seibu_sound_device, main_word_r, main_word_w
0xA0000-0xFFFFF393216ROM
Memory Area:raidenu_sub_map
Address RangeLengthFunctionDescription
0x0000-0x5FFF24576RAM
0x6000-0x67FF2048RAM Write, Sharedraiden_background_w, back_data
0x6800-0x6FFF2048RAM Write, Sharedraiden_foreground_w, fore_data
0x7000-0x7FFF4096RAM Device Write, Sharedpalette, palette_device, write, palette
0x8000-0x8FFF4096RAM, Sharedshared_ram
0xA000-0xA0012Write NOP(// ?)
0xC000-0xC0012Write NOP(// watchdog?)
0xC0000-0xFFFFF262144ROM
Memory Area:sei80bu_encrypted_full_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM, Regionaudiocpu, 0
0x8000-0xFFFF32768ROM Bankseibu_bank1
Memory Area:sub_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192RAM
0x2000-0x27FF2048RAM Write, Sharedraiden_background_w, back_data
0x2800-0x2FFF2048RAM Write, Sharedraiden_foreground_w, fore_data
0x3000-0x3FFF4096RAM Device Write, Sharedpalette, palette_device, write, palette
0x4000-0x4FFF4096RAM, Sharedshared_ram
0x7FFE-0x7FFF2Write NOP(// ?)
0x8000-0x80012Write NOP(// watchdog?)
0xA000-0xA0012Write NOP(// ?)
0xC0000-0xFFFFF262144ROM
 

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
0x0000-0x7FFF327688.u212CRC(cbe055c7) (Fluke: 7D1E)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF327689CRC(1922b25e),On some PCBs there is no explicit (Fluke: D6AC)
0x0000-0x7FFF327689CRC(1922b25e),On some PCBs there is no explicit (Fluke: D6AC)
0x8000-0xFFFF3276810CRC(5f90786a),U location for these two roms (Fluke: D6C5)
0x8000-0xFFFF3276810CRC(5f90786a),U location for these two roms (Fluke: D6C5)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288sei420CRC(da151f0b),tiles @ U105 on this PCB (Fluke: 9B92)
0x0000-0x7FFFF524288sei420CRC(da151f0b),tiles @ U105 on this PCB (Fluke: 9B92)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288sei430CRC(ac1f57ac),tiles @ U115 on this PCB (Fluke: 1FAC)
0x0000-0x7FFFF524288sei430CRC(ac1f57ac),tiles @ U115 on this PCB (Fluke: 1FAC)
Memory Area:gfx4
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288sei440CRC(946d7bde) (Fluke: 50C6)
0x0000-0x7FFFF524288sei440CRC(946d7bde) (Fluke: 50C6)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF655367.u203CRC(8f927822) (Fluke: D6FC)
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