Subject: Re: *BSD supporting 603[3]?
To: Wolfgang Solfrank <ws@kurt.tools.de>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: port-powerpc
Date: 01/31/1997 01:33:53
On Thu, 30 Jan 1997 17:45:19 +0100 
 ws@kurt.tools.de (Wolfgang Solfrank) wrote:

 > What revision does the firmware have?  I'm currently running 3.0.

3.03

 > According to the PPC binding, the OpenFirmware isn't allowed to use the
 > BATs (albeit I cannot see a reason for this restriction, if they are saved
 > and restored on client entry/exit).

Hmm, ok...

 > Actually, the firmware in my MX did use BATs for its mappings when I got it,
 > but newer revisions of the firmware replaced this with page table mapping.
 > So I would be really surprised, if they switched back to BATs.
 > 
 > > So, the main question I have is:
 > > 
 > > 	"Should I expect trouble?"
 > 
 > Since initial development was with the use of BATs, there shouldn't be a
 > problem.  However, I have to admit that I'm not 100% sure that I didn't
 > manage to break support for this.

Alright, this is somewhat reassuring :-)

 > If I really did introduce some incompatibilities, it should be quite easy
 > to fix.

Ok, I'll let you know.

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