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Date:      Wed, 12 Jan 2000 00:44:52 -0800
From:      Amancio Hasty <hasty@rah.star-gate.com>
To:        Peter Wemm <peter@netplex.com.au>
Cc:        Josef Karthauser <joe@pavilion.net>, "Daniel O'Connor" <doconnor@gsoft.com.au>, Brian Somers <brian@Awfulhak.org>, Kirk McKusick <mckusick@FreeBSD.ORG>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, brian@hak.lan.Awfulhak.org
Subject:   Re: cvs commit: src/sys/contrib/softupdates ffs_softdep.c src/sy 
Message-ID:  <200001120844.AAA52446@rah.star-gate.com>
In-Reply-To: Your message of "Wed, 12 Jan 2000 15:51:08 %2B0800." <20000112075108.A02B21CA0@overcee.netplex.com.au> 

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> The only way to do this is to move the hardware-specific parts of XFree into
> the kernel and provide a ddx device for XFree to use.
If you can imagine doing a system call for every line that you want to draw and
also a great opportunity to lose your scheduling;then, yes moving the device
specific ddx layer to the kernel is feasible 8)


To Josef:

XFree86 has specific "drivers" for vga cards which know the vga card
at the register level and at that level rarely do two vga chipsets have
the same low register level interface;additionally, the vga "driver" has
to know about :  ramdac,  max clock setting, and monitor specifications.
It can be done however I don't think is worth it. Just Run X. The system
fails while on X attach the console to a serial port or better yet
write  a gdb interface to ethercards . I used to work at HP and they
had a cool networked kernel debugger so in principle and by 
example it can be done.









-- 

 Amancio Hasty
 hasty@rah.star-gate.com




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