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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 (IBL Corporation 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: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
0x0000-0x7FFF327688b.u212CRC(99ee7505),Not encrypted (Fluke: E617)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF327689CRC(1922b25e),On some PCBs there is no explicit (Fluke: D6AC)
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)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288sei430CRC(ac1f57ac),tiles @ U115 on this PCB (Fluke: 1FAC)
Memory Area:gfx4
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288sei440CRC(946d7bde) (Fluke: 50C6)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF655367.u203CRC(8f927822) (Fluke: D6FC)
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