Dividing ROMCS into 2 lines, to disable both ROMs. Reading a non-existent I/O port no longer returned the last attribute; caused some games such as Arkanoid to be unplayable. Memory timing changes; some of the RAM banks were now ...
... caused many external devices problems; some such as the VTX5000 modem could be used via the ?fixit? devicedividing ROMCS into 2 lines, to disable both romsreading a non-existent I/O port no longer returned the last attribute; ...
