Err, I can.
I've never played OP1, I don't have any 64-bit OS, nor any 64-bit hardware, and I'm usually not the best person to ask for help on general computer problems, or compatability issues. I deal almost entirely with programming related things. If there's no compiler, assembler, or debugger involved, I'm probably not the best person to talk to.
Plus, hearing "86 bit" made me cringe and want to avoid this thread. There are x86 compatible CPUs, which include the 8086, 80286, 80386, 80486, Pentium (80586), .... That is, the chips who'se numbers end in 86. I should also point out that some of these chips are 16 bit (8086, 80286), while others are 32-bit (80386 and up), and then there are the newer 64 bit chips, that are more or less a continuation of this line.