> Pull up the MAME debugger and "dump" the address > space region that the ROMs cover. This will give you a single binary file containing > the entire 68000 program and data in native byte order, that you should be able to > disassemble with IDA.
And once you've done that, 680x0 ROMs typically start at address 0 and the initial entry point address is stored big-endian at address 4. In IDA, load the ROM at 0, go to address 4, and press 'd' (create data) twice to show the address.
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