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:drifto94_map
Address RangeLengthFunctionDescription
0x400000-0x47FFFF524288Write Only(// ?)
0x480000-0x4800012Read/Writedsp_dr_r, dsp_dr_w
0x482000-0x482FFF4096Read/Writedsp_r, dsp_w
0x483000-0x485FFF12288Write NOP(// ?)
0x500000-0x5000012Write NOP(// ??)
0x510000-0x5100012Readdrifto94_unknown_r (// ??)
0x520000-0x5200012Readdrifto94_unknown_r (// ??)
0x580000-0x5807FF2048RAM, Sharednvram (// NVRAM)
Memory Area:dsp_prg_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM, Regiondspprg, 0
 

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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152sb-a0.u41CRC(2a327b51) (Fluke: 7286)
0x0000-0x1FFFFF2097152sb-a0.u41CRC(2a327b51) (Fluke: 7286)
0x200000-0x3FFFFF2097152sb-a1.u35CRC(246f6f28) (Fluke: FDDE)
0x200000-0x3FFFFF2097152sb-a1.u35CRC(246f6f28) (Fluke: FDDE)
0x400000-0x47FFFF524288sb-a2.u32CRC(2049acf3) (Fluke: 83D9)
0x400000-0x47FFFF524288sb-a2.u32CRC(2049acf3) (Fluke: 83D9)
0x600000-0x7FFFFF2097152sb-b0.u25CRC(b3aa3e68) (Fluke: 3A0D)
0x600000-0x7FFFFF2097152sb-b0.u25CRC(b3aa3e68) (Fluke: 3A0D)
0x800000-0x9FFFFF2097152sb-b1.u21CRC(e95b38e7) (Fluke: 3783)
0x800000-0x9FFFFF2097152sb-b1.u21CRC(e95b38e7) (Fluke: 3783)
0xA00000-0xA7FFFF524288sb-b2.u18CRC(d080e620) (Fluke: B8DF)
0xA00000-0xA7FFFF524288sb-b2.u18CRC(d080e620) (Fluke: B8DF)
0xC00000-0xDFFFFF2097152sb-c0.u11CRC(825dd8f1) (Fluke: C022)
0xC00000-0xDFFFFF2097152sb-c0.u11CRC(825dd8f1) (Fluke: C022)
0xE00000-0xFFFFFF2097152sb-c1.u7CRC(744afcd7) (Fluke: 0200)
0xE00000-0xFFFFFF2097152sb-c1.u7CRC(744afcd7) (Fluke: 0200)
0x1000000-0x107FFFF524288sb-c2.u4CRC(fd1d2a92) (Fluke: CCCA)
0x1000000-0x107FFFF524288sb-c2.u4CRC(fd1d2a92) (Fluke: CCCA)
Memory Area:st010
Address RangeLengthLabel/LocationDescription
0x0000-0x10FFF69632st010.binCRC(aa11ee2d)
0x0000-0x10FFF69632st010.binCRC(aa11ee2d)
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