[rescue] SS10 Accessories
adh at an.bradford.ma.us
Sun Nov 22 08:28:20 CST 2015
" From: Romain Dolbeau <romain at dolbeau.org>
" 2015-11-22 4:06 GMT+01:00 Eddie Cottongim <jcotton at intergate.net>:
" > Out of curiosity, when Linux/Solaris etc dropped support for sun4m/sun4c,
" > is it because there was something inconvenient about the architecture that
" > they wanted to get rid of
" Probably. SPARC V7 (all sun4, sun4c & the 600MP with SM100 modules) doesn't
" have integer multiply/divide instructions, which were added in SPARC V8.
" Supporting V7 means you can't use those in libraries & binary software, or
" you need two versions which is cumbersome. For some software the more
" efficient integer instructions are a boon (some cryptographic algorithms
" come to mind).
" Then V8 (all sun4m but the SM100 modules) was 32 bits only and didn't have
" more sophisticated instructions for synchronization (it's missing
" compare-and-swap for instance). SPARC V9 has them in 64 bits and in the 32
" bits "V8plus" mode, plus some additional stuff like better condition
" By the time Solaris 10 came out, even x86 had moved to 64 bits (all the
" surviving RISC architectures but ARM had moved to 64 bits in the 90s, or
" started as 64 bits like Alpha). Supporting 32 bits didn't make much sense
" in servers or even desktop (or deskside :-) then.
also, older machines age out of even extended support and sun [oracle]
is no longer obliged to provide for them.
some times you get lucky. late-model creator and elite fbs came out
after u1 support ended, hence not tested and thus not supported - but
the u1 runs flavors of solaris which added drivers for them, so they
do in fact work in u1s.
Andrew Hay the genius nature
internet rambler is to see what all have seen
adh at an.bradford.ma.us and think what none thought
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