Date: Mon, 26 Apr 1999 03:12:09 -0700 From: Amancio Hasty <hasty@rah.star-gate.com> To: John-Mark Gurney <gurney_j@resnet.uoregon.edu> Cc: multimedia@freebsd.org Subject: Re: brooktree driver problems?? Message-ID: <199904261012.DAA06057@rah.star-gate.com> In-Reply-To: Your message of "Mon, 26 Apr 1999 02:52:34 PDT." <19990426025234.21776@hydrogen.nike.efn.org>
next in thread | previous in thread | raw e-mail | index | archive | help
It looks like a PCI chipset problem in your end . The driver is supposed to
have
special settings for your PCI chipset although I am not sure that
they will work in your case because the 878/879 docs don't
mentioned anything about bt848s settings for different PCI chipsets.
Also I am not too sure about the memory bandwith on your system
I would just aimed the display to the vga card and then time it and
thats provided that the Apollo does not cache the video memory
like the Intel PCI chipsets do which you have to set to write-combine
(don't cache) to get maximum VGA performance.
Your system is most likely timing out so look into the PCI clock cycle
in your BIOS mine is set to 32 and uncomment in the driver the following
printf:
#if defined( STATUS_SUM )
/* add any new device status or INTerrupt status bits */
status_sum |= (bktr_status & ~(BT848_INT_RSV0|BT848_INT_RSV1));
status_sum |= ((dstatus & (BT848_DSTATUS_COF|BT848_DSTATUS_LOF)) << 6);
#endif /* STATUS_SUM */
printf( " STATUS %x %x %x \n",
dstatus, bktr_status, bt848->risc_count );
/* if risc was disabled re-start process again */
if ( !(bktr_status & BT848_INT_RISC_EN) ||
Mail back the last 50 or so output lines which hopefully will shed some
light into what is upsetting the bt848.
Cheers
--
Amancio Hasty
hasty@star-gate.com
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-multimedia" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199904261012.DAA06057>