Subject: Re: NetBSD 2.0 RC4 isos for download (was: Re: newbie with pkgsrc)
To: Wojciech Puchar <>
From: =?ISO-8859-1?Q?Timo_Sch=F6ler?= <>
List: current-users
Date: 10/22/2004 15:25:45
>>>> 2.0RC4-i386-nox-p2mmx_optimized.iso (dito w/o X)
>>> what flag do you use for PII MMX?
>> -march=3Dpentium2 -mmmx
>> regarding to
>> Options.html#i386%20and%20x86-64%20Options
>> (i wonder why pentium2 doesn't imply mmx...?)
> me too... i didn't set mmx...

(i CC:ed this to current-users, maybe we get a hint ;)

i'm not a friend of x86 ;) but sometimes something has to be done... so=20=

i went to the URL posted above and set a few CFLAGS in mk.conf as i did=20=

for amiga, sparc, sparc64, macppc, etc etc according to gcc's manual=20
and the hardware i wanted NetBSD to run on.

it runs seemless, stable and a-okay :) (as well as the other=20
architectures do)

intel built the P2 as a kind of Pentium Pro (P6 architecture), but=20
wanted it to be more successful in the market. in the meantime, the=20
P55C (Pentium MMX) was introduced, so they took a PPro Core, stripped=20
the expensive full-speed L2 cache (as well as that phat ceramic package=20=

with two dies ;), replaced by a not-so-well solution (more waitstates,=20=

half clockspeed IIRC, etc.) but added MMX (like the P55C had already).

i wonder why gcc does diffenciate between (flags) 'pentiumpro' and=20
'pentium2', but does not (altho this would be logically correct,=20
because there is that clear difference between P2 and PPro, with and=20
w/o MMX) imply the -mmmx flag for pentium2 automatically...


mit vorz=FCglichster Hochachtung/best regards,

Timo Sch=F6ler
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