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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.
Rally Bike / Dash Yarou (Toaplan / Taito Corporation, 1988)
Memory Area:rallybik_main_map
Address RangeLengthFunctionDescription
0x0000-0xFFFF65536ROM
0x40000-0x7FFFF262144ROM
0x80000-0x83FFF16384RAM
0xC0000-0xC0FFF4096RAM, Sharedspriteram
0x100000-0x1000012Writetoaplan1_bcu_flipscreen_w
0x100002-0x1000032Read/Writetoaplan1_tileram_offs_r, toaplan1_tileram_offs_w
0x100004-0x1000074Read/Writerallybik_tileram16_r, toaplan1_tileram16_w
0x100010-0x10001F16Read/Writetoaplan1_scroll_regs_r, toaplan1_scroll_regs_w
0x140000-0x1400012Read PortVBLANK
0x140002-0x1400032Writetoaplan1_intenable_w
0x140008-0x14000F8Writetoaplan1_bcu_control_w
0x144000-0x1447FF2048RAM Write, Sharedtoaplan1_bgpalette_w, bgpalette
0x146000-0x1467FF2048RAM Write, Sharedtoaplan1_fgpalette_w, fgpalette
0x180000-0x180FFF4096Read/Writetoaplan1_shared_r, toaplan1_shared_w
0x1C0000-0x1C00034Writetoaplan1_tile_offsets_w
0x1C8000-0x1C80012Writetoaplan1_reset_sound_w
Memory Area:rallybik_sound_io_map
Address RangeLengthFunctionDescription
0x00001Read PortP1
0x00101Read PortP2
0x00201Read PortSYSTEM
0x00301Writerallybik_coin_w (/* Coin counter/lockout */)
0x00401Read PortDSWA
0x00501Read PortDSWB
0x0020EuropeActive High
0x0010USAActive High
0x0030USA (Romstar license)Active High
0x0000JapanActive High
0x0000OffActive High
0x0040OnActive High
0x0080NoActive High
0x0000YesActive High
0x0060-0x00612Device Read/Writeymsnd, ym3812_device, read, write
Memory Area:toaplan1_sound_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x87FF2048RAM, Sharedsharedram
 

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
0x0000-0x3FFF16384b45-05.romCRC(10814601) (Fluke: 9DDA)
Memory Area:scu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536b45-11.romCRC(0d56e8bb) (Fluke: 0599)
0x0000-0x00FF256b45-15.bprCRC(24e7d62f),sprite priority control ?? (Fluke: 0D24)
0x0100-0x01FF256b45-16.bprCRC(a50cef09),sprite priority control ?? (Fluke: 0CF8)
0x0200-0x021F32b45-14.bprCRC(f72482db),sprite control ?? (Fluke: 82F0)
0x0220-0x023F32b45-17.bprCRC(bc88cced),sprite attribute (flip/position) ?? (Fluke: 6597)
0x10000-0x1FFFF65536b45-10.romCRC(dbb7c57e) (Fluke: FC72)
0x20000-0x2FFFF65536b45-12.romCRC(cf5aae4e) (Fluke: 70A6)
0x30000-0x3FFFF65536b45-13.romCRC(1683b07c) (Fluke: EAC5)
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