Should I remove the processors and throw the backplane in the dustbin ?
Alas, perhaps yes, for the following reasons that I conclude from the small blury photo:
(Neg) Its slow: The board has NO clock oscillators on it, and therefore the 68020 and 68881 would run at bus speed (7.1mhz) and not be much faster than a 68010 - although it would haul ass at floating point calculations even with the slowest speed -881 FPU ever made (16Mhz) running at 7.1Mhz. Is there a clock on the bottom of the board?
(Neg) Its even slower: The board has NO memory chips, and NO connections for adding 32 bit memory. Is there a connector or memory on the bottom of the board?
(Neg) It wont work: The board has only one PAL on it and thats not enough glue logic to arbitrate the 020/881 32 bit bus to the Amiga 16 bit bus and allow and change speed with the custom chip/ram bus. It takes a modern CPLD or 3 large or 4 small PAL chips to glue.
Are there more chips on the bottom of the board?
(Pos) It is well made and uses some extremely good capacitors (the silver Tantalums) and therefore probably has other good design features.
The bottom line is: what speed are the chips?
The last 2 numbers of the chip are the speed grade.
Example - A MC68020RC16 is a 16 Mhz CPU, and a MC68881RC25 is a 25 Mhz FPU
I think you'd have little hope of selling 20 Mhz (or lower) speed chips and therefore the PCB is worth more (to someone, somewhere) than the CPU/FPU chips are. If it was for a system that had a 25Mhz 68000 socket (and the board has a clock doubler) and your chips are RC33 - RC50 speed then the chips are indeed worth more than the PCB, because there is no way that board would work in an Amiga 68000 socket, IMHO.
