Skeetendo

I was thinking about how games are disassembled, and had an idea. I don't know if it would be of help, but what if you take a game, say Pokemon Red (I know it's already being disassembled), and you play through the game in a (special) emulator. This emulator will log 2 files while you play, one for code executed, and one for data loaded (like graphics, music, etc.). These files will be 1/8th the size of the original ROM, and each bit will represent a byte in the ROM. So, if the emulator executes code at address 0x1004, then the 0x200 byte in the code file would have its 4th bit set. I'm not sure if this concept would help, but it (could/should) help separate code from other data, and could be applied to almost any emulator. Another program could be used to compare the 2 files (code and data) to show what's what, and what hasn't been logged yet. I'd like to know what you guys think, and if it would be worth implementing in an emulator.