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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, 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
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040UnusedActive Low
0x0080Start 1Active Low
0x0100Joystick UpActive Low
0x0200Joystick DownActive Low
0x0400Joystick LeftActive Low
0x0800Joystick RightActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000UnusedActive Low
0x8000Start 2Active Low
0xE002-0xE0032Read PortDSW
0x0001AActive High
0x0000BActive High
0x001eCoinageActive High
0x00146C_1CActive High
0x00165C_1CActive High
0x00184C_1CActive High
0x001a3C_1CActive High
0x00028C_3CActive High
0x001c2C_1CActive High
0x00045C_3CActive High
0x00063C_2CActive High
0x001e1C_1CActive High
0x00082C_3CActive High
0x00121C_2CActive High
0x00101C_3CActive High
0x000e1C_4CActive High
0x000c1C_5CActive High
0x000a1C_6CActive High
0x0000Free_PlayActive High
0x0006Coin_AActive High
0x00005C/1C or Free if Coin B tooActive High
0x00023C_1CActive High
0x00042C_1CActive High
0x00061C_1CActive High
0x0018Coin_BActive High
0x00181C_2CActive High
0x00101C_3CActive High
0x00081C_5CActive High
0x00001C/6C or Free if Coin A tooActive High
0x00201Active High
0x00002Active High
0x0080Flip_ScreenActive High
0x0080OffActive High
0x0000OnActive High
0x0300LivesActive High
0x02001Active High
0x01002Active High
0x03003Active High
0x00005Active High
0x0c00Bonus_LifeActive High
0x080080000 300000Active High
0x0c00150000 400000Active High
0x0400300000 1000000Active High
0x00001000000 5000000Active High
0x3000DifficultyActive High
0x2000EasyActive High
0x3000NormalActive High
0x1000HardActive High
0x0000Very_HardActive High
0x4000Allow_ContinueActive High
0x0000NoActive High
0x4000YesActive High
0x8000Demo_SoundsActive High
0x0000OffActive High
0x8000OnActive High
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
0x0000-0x7FFF327688.u212CRC(cbe055c7) (Fluke: 7D1E)
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)
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)
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)
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)
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)
0x0000-0x7FFFF524288sei440CRC(946d7bde) (Fluke: 50C6)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF655367.u203CRC(8f927822) (Fluke: D6FC)
0x0000-0xFFFF655367.u203CRC(8f927822) (Fluke: D6FC)
0x0000-0xFFFF655367.u203CRC(8f927822) (Fluke: D6FC)
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