ing the data from a rom
, an overdump occurs if more data is read than the capacity of the rom. This tends to happen with console cartridge
s, where the amount of actual data is variable, but the number of address lines
is fixed. Generally, the extra address lines are ignored by the cartridge, so the read appears valid, but will be a copy of data at (read address
MOD actual size of cartridge
For emulation, rom managers like GoodNES
will report overdumps, but it is up to the user to delete them.