==== Flash utility usage ====
'''|FLASH,"filename",slot'''
Where filename is a file from CPC disc, slot is a number from 0 to 6.
The rest of slots are enabled with the ''enable'' DIP switch.
'''|FLASHLOW,"filename",slot'''
Same than |FLASH command but for lower ROM replacement. It's also enabled with the ''boot'' DIP switch.
Notice that this command doesn't require the slot number, since there is only one lower slot.
'''Important''': In both commands, an empty filename means to clear the slot.