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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.
Power Wheels (Taito Corporation, 1991)
Memory Area:dblaxle_cpub_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM
0x100000-0x103FFF16384RAM
0x110000-0x11FFFF65536RAM, Sharedshare1
0x300000-0x301FFF8192Device Read/Writetc0150rod, tc0150rod_device, word_r, word_w
0x500000-0x503FFF16384RAM(/* network ram ? (see Gunbustr) */)
Memory Area:dblaxle_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM
0x200000-0x203FFF16384RAM
0x210000-0x21FFFF65536RAM, Sharedshare1
0x400000-0x40000F16Device Read/Writetc0510nio, tc0510nio_device, halfword_wordswap_r, halfword_wordswap_w
0x400010-0x40001F16Readdblaxle_steer_input_r
0x600000-0x6000012Writedblaxle_cpua_ctrl_w (/* could this be causing int6 ? */)
0x620000-0x6200034Read/Writetaitoz_sound_r, taitoz_sound_w
0x800000-0x801FFF8192RAM Device Write, Sharedpalette, palette_device, write, palette
0x900000-0x90FFFF65536Device Read/Writetc0480scp, tc0480scp_device, word_r, word_w (/* tilemap mirror */)
0xA00000-0xA0FFFF65536Device Read/Writetc0480scp, tc0480scp_device, word_r, word_w (/* tilemaps */)
0xA30000-0xA3002F48Device Read/Writetc0480scp, tc0480scp_device, ctrl_word_r, ctrl_word_w
0xC00000-0xC03FFF16384RAM, Sharedspriteram (/* mostly unused ? */)
0xC08000-0xC080012Read/Writesci_spriteframe_r, sci_spriteframe_w (/* set in int6, seems to stay zero */)
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
0x0000-0x03FF1024c84-11.17CRC(10728853) (Fluke: 4E1C)
0x0000-0x03FF1024c84-10.16CRC(643e8bfc) (Fluke: 3D9B)
0x0000-0x00FF256c78-15.22CRC(fbf81f30) (Fluke: 6538)
0x0000-0x00FF256c78-21.74CRC(2926bf27) (Fluke: 6D13)
0x0000-0xFFFF65536c78-25.15CRC(7245a6f6) (Fluke: C1A6)
Memory Area:ymsnd
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFFF1048576c78-01.33CRC(90ff1e72) (Fluke: B627)
0x100000-0x17FFFF524288c78-02.46CRC(8882d2b7) (Fluke: CF44)
Memory Area:ymsnd.deltat
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288c78-03.31CRC(9b926a2f) (Fluke: A933)
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