If all ROMs and the I/O area are swapped out, the entire 64…
If all ROMs and the I/O area are swapped out, the entire 64k RAM space is available aside from $0/$1 and the CPU vectors at $FFFA-$FFFF.
If all ROMs and the I/O area are swapped out, the entire 64k RAM space is available aside from $0/$1 and the CPU vectors at $FFFA-$FFFF.