John Arbuckle <programmingk...@gmail.com> writes: > Using '-cpu 486' gets past the assertion error. I guess Windows NT 4.0 > is not compatible with newer Intel processors.
It might be related. The assertion error is caused by the fact an exception has occurred and processor is trying to dump a stack frame that overlaps from RAM into device memory. As the IRQ/exception handling is already under the BQL (as it changes machine state) we get the assertion when it tries to take the BQL a second time when accessing device memory. We can drop the lock in the stack frame writing code but I don't know what effect that would have as the guest still might crash having tried to write a stack frame to device memory.... > > Currently I can install Windows NT 4.0, but booting from the > installation has its problems. It won't boot unless you use the NTFS > file system. Even with this file system I still see a BSOD that states > INACCESSIBLE_BOOT_DEVICE. Not sure what is wrong. Switching to a SCSI > controller didn't help. -- Alex Bennée