Date: Tue, 5 Sep 1995 22:52:13 -0400 (EDT) From: John Brann <jbrann@panix.com> To: hardware@freebsd.org Subject: Re: Video Board, Cirrus Logic 5434 on PCI Message-ID: <199509060252.WAA11828@panix2.panix.com> In-Reply-To: <Pine.BSF.3.91.950905102514.1218A-100000@zapata.omnix.fr.org> from "Didier Derny" at Sep 5, 95 10:27:34 am
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>
>
> Is it possible to use a Cirrus (GD5434) Board with FreeBSD-2.05 and
> XFree86 ?
>
>
Yes, definitely. I have a PCI card with 2Mb memory which works just fine at
8bpp. It also worked with 1Mb - which brings me to another question...
I added the extra Meg of memory to move up to 64K colours. In order to drive
my GD5434 up to 16bpp, I must specify a 'Membase' option for the framebuffer
base address. To quote the 'Readme'...
With a card on the PCI bus, there is a PCI configuration register that
holds the framebuffer base address. However, the driver currently does
not read it out yet, so you'll have to specify the address with
MemBase. On one system tested, it mapped at 0xa0000000, and it
appeared addresses where assigned in 0x08000000 increments over the
PCI devices. A program is most likely available to read out the PCI
configuration.
So, does this program exist? Alternatively, can I work out the info. I need
from the boot messages? I see that...
vga0 <VGA-compatible display device> rev 142 int a irq ?? on pci0:18
pci0: uses 16781312 bytes of memory from f800000 0 upto f8ffffff.
Any help is appreciated...
I'm running 2.0.5-950622-SNAP on a Pentium 60 with 32Mb of RAM
John
--
"That was inedible muck, and there wasn't enough of it."
Sir Henry Rawlinson.
John Brann -- jbrann@panix.com jbrann@newparadigm.com
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