In another thread the issue that there are too few fast Motorola 68060 CPUs around came up. But that a solution could be to join a male socket and a FPGA on top of that. Much like the 486- or pentium overdrive solutions for the x86.
The MC68060 datasheet provides the PGA 206 pinout at page 356. And the frequency span is 0 - 75 MHz. Power (p328, p344) requirement is 3.3V +/- 5% @ 2A with 5V compatible I/O. There has not been any QFP variant on the commercial market, ever?
So this is what the FPGA has to be able to work with. Some kind of onboard DC/DC circuit will be needed. The voltages of iVDD, EVDD, PVDD and CVDD is unclear especially in a mixed 040/060 environment. So the question becomes, can a powerfull enough FPGA that implements 060 make do with 6.6 W ? and will the mechanical size be within limits? otherwise circuit board stacking may be needed.
Btw, with some additional PGA-114 (020) and PGA-132 (030) to PGA-206 adapter it could be used as a upgrade option for those CPUs too.
OT Found while searching:
a68k.de - Overclocking Amiga.pdf
As for power required vs. what the socket can be expected to supply, since this will require a pcb roughly shaped like an 060 chip, consider also including a floppy power connector... we'll likely need dc/dc converters for fpga core voltage and other things, why not for 3.3v as well? this could be a hard drive connecter or whatever to get enough power.
one could consider also trying to include 030 PGA pins as well as 040/060 all on the same module and be careful installing, but there is more chance the 030 pins would interfere with 060/040 socket or 040/060 pins interfering with other components on 030 board near the socket. some adapter.
i's use quickswitches or equivalent to get 5v tolerance on the fpga IO, so it would simply plug into an 040 socket and work, as well as simplify adapter to 030 socket to work there. thus the 060 fpga pcb is fpga + quickswitches + power. While quickswitches might affect timing, we're limited to the fastest 680x0 socket here, and that may not be a problem. but something to consider. If it is a problem on 060 like the overclocked Apollo boards, then put quickswitches on 040 and 030 adapters where they don't cause speed problems for super fast real 060 sockets.
also consider ddr3 memory on the pcb, as modern fpgas have a hardwired controller inside for our "whatever" to hook up to. super-fast main memory, or a cache or something. build up a real accelerator for your accelerator.
for those that loathe ddr3, cook up something more paletable in there...
This sort of discussion is really fun!