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:bestbest_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM, Mirror0xc0000 (// ROM)
0x200000-0x2FFFFF1048576ROM, Regionuser1, 0 (// ROM)
0x500000-0x5000012Read Port, WriteP1, soundlatch_w (// To Sound CPU)
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080UnknownActive Low
0x0100UnknownActive Low
0x0200Button 4Active Low
0x0400Button 5Active Low
0x0800Button 6Active Low
0x1000UnknownActive Low
0x2000UnknownActive Low
0x4000Start 1Active Low
0x8000Coin 1Active Low
0x500002-0x5000032Read Port, WriteP2, bestbest_flipscreen_w (// P2 + Coins, Flip Screen)
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080UnknownActive Low
0x0100UnknownActive Low
0x0200Button 4Active Low
0x0400Button 5Active Low
0x0800Button 6Active Low
0x1000UnknownActive Low
0x2000UnknownActive Low
0x4000Start 2Active Low
0x8000Coin 2Active Low
0x500004-0x5000052Read Port, WriteDSW, bestbest_coin_w (// Coin Counter)
0x0007CoinageActive High
0x00005C_1CActive High
0x00014C_1CActive High
0x00023C_1CActive High
0x00032C_1CActive High
0x00071C_1CActive High
0x00061C_2CActive High
0x00051C_3CActive High
0x00041C_4CActive High
0x0018DifficultyActive High
0x0018EasyActive High
0x0010NormalActive High
0x0008HardActive High
0x0000HardestActive High
0x0000OffActive High
0x0020OnActive High
0x0080Demo_SoundsActive High
0x0080OffActive High
0x0000OnActive High
0x0100Flip_ScreenActive High
0x0100OffActive High
0x0000OnActive High
0x06001:10Active High
0x04001:20Active High
0x02001:30Active High
0x00001:40Active High
0x500008-0x5000092Write 8-bitbestbest_prot_w, 0x00ff (// Protection)
0x500018-0x5000192Read 8-bitbestbest_prot_r, 0x00ff (// ")
0x540000-0x540FFF4096Read/Writepaletteram_r, paletteram_w (// Banked(?) Palette)
0x541000-0x54FFFF61440RAM(//)
0x580000-0x58FFFF65536RAM(// RAM)
0x5C0000-0x5DFFFF131072RAM, Sharedspriteram (// Sprites (Chip 1))
0x5E0000-0x5FFFFF131072RAM, Sharedspriteram2 (// Sprites (Chip 2))
Memory Area:bestbest_pcm_1_iomap
Address RangeLengthFunctionDescription
0x00001Device Readsoundlatch2, generic_latch_8_device, read (// From The Sound Z80)
0x00001Device Writeldac, dac_byte_interface, write
0x00011Device Writerdac, dac_byte_interface, write
0x00021Device Writeldac2, dac_byte_interface, write
0x00031Device Writerdac2, dac_byte_interface, write
Memory Area:bestbest_pcm_1_map
Address RangeLengthFunctionDescription
0x0000-0xFFFF65536ROM
Memory Area:bestbest_sound_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM(// ROM)
0xC000-0xC0012Device Writeymsnd, ym3526_device, write
0xC002-0xC0032Device Writeaysnd, ay8910_device, address_data_w (// AY8910)
0xE000-0xE7FF2048RAM(// RAM)
0xF0001Device Writesoundlatch2, generic_latch_8_device, write (// To PCM Z80)
0xF8001Device Readsoundlatch, generic_latch_8_device, read (// From Main CPU)
 

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:pcm1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF655366.binCRC(dd445f6b) (Fluke: 5A9F)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF25682s129.5CRC(10bfcebb) (Fluke: 12CD)
0x0100-0x01FF25682s129.6CRC(10bfcebb) (Fluke: 12CD)
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