I have two A500 (originaly OCS) ... In one of them I exchanged the Denise with a Super Denise (ECS), it also came with an 1MB Fat Agnus, so I made a hack, to make my 512kB slow RAM to CHIP memory ... so I could almost call my old A500 an A500+, but with my 68020card and AmigaOS 3.1 what should I call it ;-)