On Fri, Dec 14, 2012 at 11:39 PM, Marcelo Tosatti <mtosa...@redhat.com> wrote: > > > The high byte of the ioport address is necessary to compute > the register address, see "82371AB PCI ISA IDE Xcelerator (PIIX4)" > document, eg: > > 4.2.1.1. DCOM—DMA Command Register (IO) > I/O Address: Channels 0–3—08h; Channels 4–7—0D0h >
I sent a patch on the mailing to resolve the problem yesterday (http://www.mail-archive.com/qemu-devel@nongnu.org/msg145242.html). Did it resolve your WinXp-32 installation? I just need to rework the comment. > > Also the size of the region is wrong. I don't think the size of the region is wrong. For the second DMA controller, the ioports are 0xD0 - 0xDE for the control registers. So the size is 16 not 8. It's the same for the channel registers. Thanks, -- Grall Julien
