Mac OS 10.4 (PowerPC) in QEMU
Now that Apple has ended supporting PowerPC applications having Mac OS 10.4 around can be a life saver. With it you can continue to use your favorite PowerPC applications.
qemu-system-ppc -hda <HD image file> -boot c -netdev user,id=mynet0 -device rtl8139,netdev=mynet0
-m 512 -device usb-kbd -device usb-mouse -M mac99
To boot in verbose mode add this:
To prevent the guest from freezing turn off all setting in the Energy Saver pane in System Preferences. Set the sleep and display sliders to Never. Uncheck the "Put the hard disk(s) to sleep when possible" checkbox.
It is also suggested to turn off the screen saver. Open the the 'Desktop & Screen Saver' pane in System Preferences and slide the 'Start screen saver:' slider to Never.
Sound barely works.