24 Nov
2004
24 Nov
'04
1:42 a.m.
Good day,
*********** REPLY SEPARATOR ***********
On 19-Nov-04 at 19:32 msokolov(a)ivan.Harhan.ORG wrote:
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.
Actually, NetBSD has slightly different SPARC kernels if I recall correctly.
In any case, the Sun Hardware Reference, a copy of which may be found at:
http://www.obsolyte.com/sunFAQ/faq_hardware/hwref0.html
...should answer all your questions.
Happy digging.
-=-=-=-=-=-=-=-=-=-=-=-
Bruce Lane, Owner & Head Hardware Heavy,
Blue Feather Technologies -- http://www.bluefeathertech.com
kyrrin (at) bluefeathertech do/t c=o=m
"If Salvador Dali had owned a computer, would it have been equipped with surreal
ports?"