Hi,
Have you tried changing the settings in the "SETTINGS>>screen mode" menu item, as well as the "SETTINGS>>preview mode" menu item?
According to the manual you should still be able to preview HAM-8 on aga. You could also try enabling the SETTINGS>>close workbench option to free memory, although this may cause crashes when trying to re-open workbench according to the manual.
Hope this helps.
