Re: where's tfm?
everything seemed ok, now. X is running, enlightenment with "aqua_"
theme :) ok. the problem is that almost every program I try to run
gives me a segmentation fault message.
f
On Mon, 14 Feb 2005 22:16:35 +0100 (CET), Mich Lanners <mlan@cpu.lu> wrote:
> Hi all,
>
> On 14 Feb, this message from Benjamin Herrenschmidt echoed through
> cyberspace:
> > On Sun, 2005-02-13 at 13:46 -0800, Brad Boyer wrote:
> >> On Sun, Feb 13, 2005 at 02:08:19PM -0200, Felipe Fonseca wrote:
> >> > yes. that looks like a problem...
> >> >
> >> > On Sun, 13 Feb 2005 18:02:13 +0200, Eddy Petrisor
> >> > <eddy.petrisor@gmail.com> wrote:
> >> > > >"00:0b.0 Host bridge: Apple Computer Inc. Bandit PowerPC host
> >> > > >bridge (rev 03) 00:10.0 Class ff00: Apple Computer Inc. Grand
> >> > > >Central I/O (rev 02)"
> >>
> >> Actually, the 1st gen PCI powermacs had almost no PCI devices.
>
> Not really true.... they don't have a high number of PCI devices, but
> everything _is_ connected to PCI.
>
> >> The
> >> builtin video is not actually a PCI device.
>
> Well, though it s not a PCI card, and it is electrically probably not
> really compatible to PCI (but who knows...), it does have a PCI
> personality on a bus that has PCI semantics. You know, it may have been
> designed as a real PCI device, but legend has it that Apple's hardware
> engineers were more after design than function....
>
> >> You need the controlfb
> >> driver in the kernel and the fbdev driver in X. It won't be very
> >> fast since it's not accelerated, but it should work.
>
> This, on the other hand, is the real truth, brother :-)
>
> > Actually ... control is behind the "chaos" chip which is a PCI device
>
> Yes and no. It is a PCI host bridge, but unlike 'real' host bridges, it
> has no PCI personality on the child bus. So, if you lspci the chaos PCI
> bus, there is no chas device on there.
>
> > (it contains DBDMA engines so one could theorically write some blit
> > acceleration there ...)
>
> No, chaos has no DBDMA engine AFAIK. PlanB has (you are surely confusing
> here :-). PlanB could in theory do the bitblit, but noone has succeeded
> in making it move data _between_ memory locations. From video to memory,
> yes, but not from memory to memory.
>
> > I'm surprised that chaos isn't showing up there, could be a problem
> > with the PCI code on these old machines.
>
> No, this is a case of 'special' hardware. Nobody will ever know if it is
> a hardware bug that was not deemed important enough to fix, or if it is
> so be concious design decision. Apple hardware :-) Talk to the Mac68k
> guys, they can tell you some :-))
>
> Cheers
>
> Michel
>
> -------------------------------------------------------------------------
> Michel Lanners | " Read Philosophy. Study Art.
> 23, Rue Paul Henkes | Ask Questions. Make Mistakes.
> L-1710 Luxembourg |
> email mlan@cpu.lu |
> http://www.cpu.lu/~mlan | Learn Always. "
>
--
FelipeFonseca
http://felipe.hipercortex.com
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