Difference between sun4, sun4c and sun4m subarchitectures

From: Bruce Lane <kyrrin_at_bluefeathertech.com>
Date: Wed Nov 24 09:42:53 2004

Good day,

*********** REPLY SEPARATOR ***********

On 19-Nov-04 at 19:32 msokolov_at_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
>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:


        ...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?"
Received on Wed Nov 24 2004 - 09:42:53 GMT

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