> I should note that the machine can successfully boot (and run) OpenBSD > via PXE (by first loading the OpenBSD PXE loader and then loading and > booting an OpenBSD miniroot), so I don't think it's a hardware > problem. That the clock doesn't seem to be interrupting at all and > that I pulled a new RTL8169 driver out of your directory on sources > and wedged it into 9pxeload with the same results makes me think that > it's not an ethernet driver issue. I suspect that either the > interrupt vector is being incorrectly set or corrupted, or that > interrupts are somehow being disabled and never re-enabled. The > latter doesn't seem particularly likely to me.
consider smm mode. and the possibility for stepping on smm memory between 512k and 640k. - erik
