Special Super Denise in A3000?

[desantii]

Is the Super Denise in the A3000 different from other Super Denise chips? I have an A3000 with rev 9/03 motherboard, just for testing I removed the Super Denise Chip and tried a Super Denise from a 500+ and a regular Denise from an A2000, in both cases no boot. I thought all Denise chips were mutually compatible?
 
I remember using at one point a regukar Denise on an A3000 (different MB rev)
 
Thanks

[desantii]

I'll try a little more chip swapping to see if I get lucky, but I am inclined as it was suggested could just be the multiple chip revisions