Non booting A4000 when PicassoIV installed!!!

[Blade]

Ok, this is probably very unlikely, but you don't have an A3640 Commo CPU Board
in this A4000, do you?

[Blade]

Ah, well there you have found your Problem then
Those two cards simply won't work together (other revisions of the 3640 do iirc, but not those particular ones)
So you should get either another cpu board, or don't use the PIV in this A4k.
I had the very same problem when my PPC Card died and I tried to replace it with an A3640. No chance to get it work.
the 3630 Board actually did, but hell was that sloooooow! (Had just a fresh Install of my newly bought OS 3.9 back then..
no fun! )

[Blade]

Well, they might have used other Revisions of the CPU Board Also, I just can tell from my personal
experience, and that was what I discoverd back then However, good luck (and hopefully the card is still
working btw, I just found the thread with the advice of removing those chips near the zorro conector,
and it seems as there is also an A3640 involved... Another CPU Board might had helped here too

[Blade]

Well as I said, I just can confirm my own experiences with the A3640 + PIV.
The (officaly) missing FPU might be just enough, also the fact that in some
(rare) cases a 3.1 rev board isn't exactly a 3.1 rev board.

However I have to admit that I am surprised that not more problems with this combo
are mentioned (ok I didn't probably google hard enough) however I think when
two exact combos (with my experince three) give the same non working result,
I guess we have at least a strong evidence here and the change of the cpu card
might be a good starting point