I don't really get your post here. I hope I am not offending you with my comments, I can assure you that this is not my intention.
The FPU in the 060 is (insanly much) faster than the 68881/68882. A few FPU instructions are missing, but this can easily be handled with very little slowdown.
> But I was planning on using a simple "LC040" + the 882.
> Something like 40 mhz 040 and a 50mhz 68882.
You can't use a 68881/68882 with a 040 or a 060. Well, you could use it in memorymapped mode, but that's not much point since it is very very slow. Even if you could use in co-processor mode (which you can't), it is so much slower than the built in FPU.
>Most of the 060's made, all the 50mhz versions seem to have
>the FPU, while more 66mhz versions and 75mhz versions DONT
>seem to have the FPU. At least the "available" ones dont.
Rev 6 (mask 1E41J) is marked as 50Mhz, but runs quite happily at 80,90 or even 100Mhz. It has a built in FPU.
> Remake your own 060 card, and use either a PPC's FPU,
> or a coldfire's internal FPU.
You can't use a PPC or coldfire as an FPU for the 060. You can use them as separate CPU's, but they won't execute FPU instructions for the 060.
> Remake the card, put a socket for a 68882 @50mhz in and
> try and find one of the latest revisions. Overclock that
> thing to 75 mhz or even 100mhz. Supposedly, and this is a
> BIG
SUPPOSEDLY, they really did make 100mhz 882's and
> stamped them with "50"
... or use a 060, because it will usually be faster even if you run it at a lower frequency.
If you're serious about this, I suggest you do something similar to the CT60 accellerator for the Atari Falcon. It uses SDRAM, allowing it to operate at 100Mhz (provided that you have a Rev. 6 060).
Or, use a Coldfire, but there are quite a few differences between the 68k and the coldfire, which might cause a lot of compatibility problems (=the software effort needed is quite big).
Sorry for comparing your post to an old hoax on the Atariscene. I'm a bit triggerhappy, I guess.
Also, sorry for posting info about Ataristuff in this forum, but I thought it was relevant in this case. I am planning to get my first Amiga soon, since I want to see this side of life too.
-- PeP