On Thu, 15 Feb 1996 14:42:48 -0500 (EST) 
 Mike Frisch <mfrisch@saturn.lcs.mit.edu> wrote:

 > 	Can somebody tell me where the P4 frame buffer support is at in 
 > NetBSD/sparc?  I am running a Sun 4/110 (SUN4 architecture) with a bwtwo 
 > mono frame buffer.  Last time I tried NetBSD, it did not have support for 
 > this fb.

Personally, I haven't gotten around to hacking on this yet.  OpenBSD does 
have some support for pfour, but I didn't particularly like the 
autoconfiguration model used (like, what was the point of creating a 
whole new bus class?).  Also, I had heard that it just didn't work with 
some pfour framebuffers.

 > 	Also, has the "sw" SCSI driver been fixed?  Last time I tried 
 > this, performance was worse than lousy.

I haven't hacked on it lately ... there are a couple of things I want to 
do to the si/sw driver, but it's been low on my priority list.  
Basically, if you're willing, you can run the "sw" in DMA mode, but I've 
had some reports of data corruption happening occasionally.  The DMA 
controller sometimes encounters a bus error, and I haven't figured out 
the cause, yet.  Note, when I wrote the "sw" DMA code, I was basically 
guessing.  Hey, it kind of works... :-)

--------------------------------------------------------------------------
Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
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