A500 question

[zipper]

Thanks Mike,
The reason I am asking is I have a DKB Megachip, so if the mod has been done I can just replace Angus with the Megachip to get 2 meg of chip ram with out having mod it myself. I will need to remove the a501 and all should be good if I understand it all correctly. any thoughts

Exactly, that's (the mobo mod) what I've done  with my rev 6A to get 2 MB chip. The a501 is added to the chip memory, without it you do get just 1.5 chip.

[zipper]

Yes - if " that takes more than 512k of RAM" (is the exact phrase in the manual)! Your board doesn't.