he bank used. A bank is 0x4000 in size for a .NES file(and 0x1000 for a .NSF file, but don't worry about this for now). 80E5, masked with 3FFF, equals 00E5. 0x1E multiplied by 4000 is 0x78000. Together, this gives 0x78000 + 0x00E5, which equals the address 0x780E5. Add 0x10 to this to account for the 0x10 byte .NES header, and you get 0x780F5, which is what the address is within the .NES file. That is all that this piece of information means.</p>
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<p>1E:(80E5) is the address that the data that 