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:magspeed_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM(// ROM)
0x200000-0x20FFFF65536RAM(// RAM)
0x500000-0x5000012Read PortP1 (// P1)
0x0001P1 Card 1Active Low
0x0002P1 Card 2Active Low
0x0004P1 Card 3Active Low
0x0008P1 Card 4Active Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040UnknownActive Low
0x0080Start 1Active Low
0x500002-0x5000032Read PortP2 (// P2)
0x0001P2 Card 1Active Low
0x0002P2 Card 2Active Low
0x0004P2 Card 3Active Low
0x0008P2 Card 4Active Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040UnknownActive Low
0x0080Start 2Active Low
0x500004-0x5000052Read PortCOINS (// Coins)
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Service 1Active Low
0x0008TiltActive Low
0x0010UnknownActive Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x500008-0x50000B4Readseta_dsw_r (// DSW)
0x50000C-0x50000D2Device Writewatchdog, watchdog_timer_device, reset16_w
0x500010-0x5000156RAM Write, Sharedmsgundam_vregs_w, vregs (// ? Coin Lockout + Video Registers)
0x500018-0x5000192Write NOP(// lev 2 irq ack?)
0x50001C-0x50001D2Write NOP(// lev 4 irq ack?)
0x600000-0x6000056Writemagspeed_lights_w (// Lights)
0x600006-0x6000072Write NOP(// ?)
0x700000-0x7003FF1024RAM(// Palette RAM (tested))
0x700400-0x700FFF3072RAM, Sharedpaletteram (// Palette)
0x701000-0x703FFF12288RAM(// Palette RAM (tested))
0x800000-0x803FFF16384RAM Write, Sharedseta_vram_0_w, vram_0 (// VRAM 0&1)
0x804000-0x807FFF16384RAM(// tested)
0x880000-0x883FFF16384RAM Write, Sharedseta_vram_2_w, vram_2 (// VRAM 2&3)
0x884000-0x887FFF16384RAM(// tested)
0x900000-0x9000056RAM, Sharedvctrl_0 (// VRAM 0&1 Ctrl)
0x980000-0x9800056RAM, Sharedvctrl_2 (// VRAM 2&3 Ctrl)
0xA00000-0xA005FF1536RAM, Device Read/Writespritegen, seta001_device, spriteylow_r16, spriteylow_w16 (// Sprites Y)
0xA00600-0xA006078RAM, Device Read/Writespritegen, seta001_device, spritectrl_r16, spritectrl_w16
0xA80000-0xA800012RAM(// ? $4000)
0xB00000-0xB03FFF16384RAM, Device Read/Writespritegen, seta001_device, spritecode_r16, spritecode_w16 (// Sprites Code + X + Attr)
0xB04000-0xB07FFF16384RAM(// tested)
0xC00000-0xC000078Write NOP(// ?)
0xC00000-0xC000078Writetimer_regs_w (// ?)
0xD00000-0xD03FFF16384Device Read/Writex1snd, x1_010_device, word_r, word_w (// Sound)
 

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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576fu001004.21CRC(7582c5a8)
0x100000-0x1FFFFF1048576fu001005.22CRC(fd4b1ff6)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576fu001006.152CRC(70855139)
Memory Area:x1snd
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576fu001007.26CRC(173463c2)
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