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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.
Back To the Future (Data East, 0)
Memory Area:de_2_audio_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192RAM
0x2000-0x20012Device Read/Writeym2151, ym2151_device, read, write
0x24001Readsound_latch_r
0x28001Writesample_bank_w
0x30001Writesample_w
0x4000-0x7FFF16384ROM Banksample_bank
0x8000-0xFFFF32768ROM
 

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
0x8000-0xFFFF32768bttfsf7.romCRC(7673146e)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x4000-0x7FFF16384bttfb5g.2-7CRC(5e3e3cfa)
0x8000-0xFFFF32768bttfc5g.2-7CRC(31dec6d0)
Memory Area:sound1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536bttfsf6.romCRC(468a8d9c)
0x10000-0x1FFFF65536bttfsf5.romCRC(37a6f6b8)
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