I suspect only the notebook cards support dualhead. i don't have a any
r128 cards; I wrote this patch by cross referencing the radeon driver.
however, I don't have the r128 docs, so I had to guess on much of the
register poking, so alot of that is probably wrong. If someone out
there has an r128 mobility based notebook and the r128 docs, then they
could hopefully use my code as a starting point to get dual head
support. I might try a similar endeavor on the mach64 based mobilities
at somepoint, but once again, I have no docs and no actual hardware so
(athough if I could find a cheap old rage mobility NB who knows) it
would just be a somewhat theoretical attempt.
Pretty much I had some time last weekend so I compared the radeon to
the r128, and the dualhead stuff looked pretty simple so i gave it a
try.
Alex
------------------------
Subject: Re: [Xpert]Re: [Patches] attempted dualhead support for r128
Reply-To: xpert@XFree86.Org
Which card do you have ? I don't recall r128 cards supporting two
heads..
With the exception of notebook chipsets. (Note: TV-out does not count).
Vladimir Dergachev
On Tue, 10 Sep 2002, Alex Deucher wrote:
> I don't suppose someone out there with r128 docs would fill me in on
> how the second head is controlled on r128. with that info I will try
> and refine my patches. as commented in r128_reg.h in the crtc2
section
> are all the crtc2 regs listed? or were some left out? also have is
the
> DAC, cursor and pll stuff done on the second head? Radeon seems to
> have dedicated regs defined in radeon_regs.h for these functions, but
> r128 does not have them. Does r128 even have hardware cusor support
on
> the seconf head? Also which models support dual head? I arbitrarily
> chose the mobility models since those have been the only ones I've
> heard of to support this. If someone could give me an overview
setting
> up the 2nd crtc I appreciate it.
>
> Thanks,
>
> Alex
>
__________________________________________________
Yahoo! - We Remember
9-11: A tribute to the more than 3,000 lives lost
http://dir.remember.yahoo.com/tribute
_______________________________________________
xfree86-list mailing list
xfree86-list@redhat.com
https://listman.redhat.com/mailman/listinfo/xfree86-list
IRC: #xfree86 on irc.redhat.com
