Difference between sun4, sun4c and sun4m subarchitectures

From: Michael Sokolov <msokolov_at_ivan.Harhan.ORG>
Date: Fri Nov 19 13:32:13 2004

Hello ClassicCmpers,

Does anyone know what are the real technical differences between sun4,
sun4c and sun4m subarchitectures of SPARC from the viewpoint of an OS
kernel writer? I know that SunOS treats them as different kernel
architectures while Net/OpenBSD has a unified SPARC kernel, as does
Linux if I'm not mistaken. I'm trying to evaluate the pros and cons
of the two approaches. Reason: a friend of mine is porting 4.3BSD-Quasijarus
to SPARC and I'm trying to help him with the key architectural decisions.
We have the SunOS 4.1.4 source.

MS
Received on Fri Nov 19 2004 - 13:32:13 GMT