[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging

From: Andreas Färber
Subject: Re: [Qemu-devel] [PATCH v3 5/6] vga: Use linear mapping + dirty logging in chain 4 memory access mode
Date: Wed, 14 Sep 2011 23:27:58 +0200

Am 14.09.2011 um 22:42 schrieb Richard Henderson:

On 09/14/2011 01:35 PM, Alexander Graf wrote:

Can you explain what the memory map looks like from the hardware point of view?

If you can tell me where to find out :). I seriously have zero experience in VGA mapping - and it sounds as if Blue has a pretty good idea what's going on.

He's not interested in the VGA bits, but in the PPC board bits.
How are addresses forwarded from the main system bus to the
PCI host bridge, for instance?

Does this help?


The historical dev trees at http://penguinppc.org/historical/dev-trees-html/trees-index.html seem to have disappeared, this iMac seems closest: The ATI VGA card sits directly on /pci.

Later models of PowerMac G3 had AGP graphics, the final PowerMac G5 models had PCIe graphics. Note that ATI graphic cards were sold as special Mac Edition, so I wouldn't completely rule out deviations from PC standards...


reply via email to

[Prev in Thread] Current Thread [Next in Thread]