Hi, When qemu-system-ppc is started with argument "-icount auto" (needed for running qemu in the emulated system), it will print lots of "Bad clock read" on stderr.
env->can_do_io toggles between 0 and 1. A similar problem was reported some time ago: http://lists.nongnu.org/archive/html/qemu-devel/2008-06/msg00792.html Regards Stefan
