> Am 18.09.2015 um 15:55 schrieb Programmingkid <programmingk...@gmail.com>: > > >> On Sep 18, 2015, at 2:14 AM, Alexander Graf wrote: >> >> >> >>> Am 17.09.2015 um 14:42 schrieb Programmingkid <programmingk...@gmail.com>: >>> >>> Is there a way to make USB work with Mac OS X on qemu-system-ppc? I used >>> the -usb option, but mounting a flash drive didn't work. Would you know >>> anything that could help? >> >> Nothing of the top of my head. It did work on x86, so maybe the ohci >> emulation is broken? OS9 doesn't boot because of USB breakage in ohci... > > Just looked at Cormac's GSOC page. He said Mac OS 9 is attempting to write to > the OHCI's HcDoneHead register. Is there anything stopping us from changing > the HcDoneHead register so that it can be written to?
Iirc the problem is deeper... > > My other idea is that the operating system thinks the root hub is made by > Apple. If we changed the device descriptor so that the software thinks it is > made by someone else, then the operating system might use the register > correctly. I'm thinking that Apple made their own root hub that can do things > a standard OHCI USB controller can't do. What are your thoughts? I doubt that this is the reason. Alex
