The Plus 3 reset PAGE to &1D00, reducing the amount of free RAM available to the user. The ADFS system could be temporarily disabled (and PAGE reset to &E00) via the command. Later products such as the PRES E00 ADFS remedied the memory demands of the ADFS, along with other issues suffered by the software as delivered with the Plus 3. If using the Plus 3 in screen modes 0–3, the pseudo-variable would be thrown off, as the interrupts were disabled during disk access in these modes. The screen would also blank during disc accesses.