The problem is currently OpenBIOS won't work on a bare metal, since > it's tightly coupled with qemu. So, PROM size at this point is a > purely academical question. I'm involved in a project where OpenBIOS for Sparc32 is actually used on bare metal (in a FPGA). OpenBIOS is installed in a 16MB NOR FLASH. There are a few QEMU dependencies and some small issues which don't appear in QEMU (for example, the MMU activation sequence does not work IRL, there is a small bug in wuf.S ...). Regards, and thank you all for your hard work ! Olivier