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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.
Racing Beat (Taito Corporation Japan, 1991)
Memory Area:racingb_cpub_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM
0x400000-0x403FFF16384RAM
0x410000-0x41FFFF65536RAM, Sharedshare1
0xA00000-0xA01FFF8192Device Read/Writetc0150rod, tc0150rod_device, word_r, word_w
0xD00000-0xD03FFF16384RAM(/* network ram ? */)
Memory Area:racingb_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM
0x100000-0x103FFF16384RAM
0x110000-0x11FFFF65536RAM, Sharedshare1
0x300000-0x30000F16Device Read/Writetc0510nio, tc0510nio_device, halfword_wordswap_r, halfword_wordswap_w
0x0001CabinetActive High
0x0000Type 0Active High
0x0001Type 1Active High
0x0008Demo_SoundsActive High
0x0000OffActive High
0x0008OnActive High
0x300010-0x30001F16Readdblaxle_steer_input_r
0x500002-0x5000032Writecpua_ctrl_w
0x520000-0x5200034Read/Writetaitoz_sound_r, taitoz_sound_w
0x700000-0x701FFF8192RAM Device Write, Sharedpalette, palette_device, write, palette
0x900000-0x90FFFF65536Device Read/Writetc0480scp, tc0480scp_device, word_r, word_w (/* tilemaps */)
0x930000-0x93002F48Device Read/Writetc0480scp, tc0480scp_device, ctrl_word_r, ctrl_word_w
0xB00000-0xB03FFF16384RAM, Sharedspriteram (/* mostly unused ? */)
0xB08000-0xB080012Read/Writesci_spriteframe_r, sci_spriteframe_w (/* alternates 0/0x100 */)
Memory Area:z80_sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x7FFF16384ROM Bankz80bank
0xC000-0xDFFF8192RAM
0xE000-0xE0034Device Read/Writeymsnd, ym2610_device, read, write
0xE2001Read NOP, Device Writetc0140syt, tc0140syt_device, slave_port_w
0xE2011Device Read/Writetc0140syt, tc0140syt_device, slave_comm_r, slave_comm_w
0xE400-0xE4034Writetaitoz_pancontrol (/* pan */)
0xEA001Read NOP
0xEE001Write NOP(/* ? */)
0xF0001Write NOP(/* ? */)
0xF2001Writesound_bankswitch_w
 

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:user2
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536c84-19.15CRC(7245a6f6) (Fluke: C1A6)
0x0000-0x00FF256c84-07.22CRC(95a15c77) (Fluke: E52A)
0x0000-0x00FF256c84-09.74CRC(71217472) (Fluke: 4A61)
0x0000-0x03FF1024c84-10.16CRC(643e8bfc) (Fluke: 3D9B)
0x0000-0x03FF1024c84-11.17CRC(10728853) (Fluke: 4E1C)
Memory Area:ymsnd
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576c84-86.33CRC(98d9771e) (Fluke: 13EB)
0x100000-0x17FFFF524288c84-87.46CRC(9c1dd80c) (Fluke: D5DC)
Memory Area:ymsnd.deltat
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288c84-85.31CRC(24cd838d) (Fluke: EF7D)
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