Hi its a 104 revision
thanks for the reply,Brian.
A 1D4 A1200 motherboard WILL require a fix. See below link for information and instructions:
http://www.ianstedman.co.uk/Amiga/amiga_hacks/A1200_Mobo_fix/a1200_mobo_fix.htmlMy ACA seemingly worked fine on my rev.2B A1200 without the fix. But with WHDLoad on some games I had freezing problems, or graphics corruption. Like Breathless would freeze after 2 minutes, as did AB3D after a while.
At the time I read over at eab that Mad Professor Mariarti was a good game to test whether timing fixes are needed and whether (after fixing) fixing was successful. I loaded the said game...before the fixes the graphics became trashed in the intro...so I knew I needed fixes. I performed the fix and hey presto...no graphics corruption, and no more freezing either on those other games I mentioned.
As for the timing fixes with non ACA cards, the problem is not a new one and not unique to the ACA series. Not all A1200 motherboard revisions require the fix, so that's why a lot of people never needed the fix to begin with (back in the 90's for example). AFAIK it's only the 1D4 and 2B motherboard revisions that require these fixes, and yes, even non ACA cards (not ram expansions) will require the fix as well in order to work correctly.
