Date: Thu, 20 Jun 1996 23:31:17 -0700 From: "Michael L. VanLoon -- HeadCandy.com" <michaelv@HeadCandy.com> To: Howard Lew <hlew@sequence.stanford.edu> Cc: Bill/Carolyn Pechter <pechter@shell.monmouth.com>, freebsd-hardware@freefall.freebsd.org, freebsd-chat@freefall.freebsd.org Subject: Re: Cyrix and AMD chips Message-ID: <199606210631.XAA01022@MindBender.HeadCandy.com> In-Reply-To: Your message of Thu, 20 Jun 96 13:33:32 -0700. <Pine.OSF.3.91.960620133154.10028A-100000@aeffle.Stanford.EDU>
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>I believe the 486DX2/66 is a 5V CPU. I believe the 5x86s are all 3 volt,
>so there's a potential problem. Need an adapter for that. Might also
>need to flash the bios.
I believe we've already covered that ground. At least implicitely.
Just in case it was lost on anyone: all the current 486s (that I know
of), including 5x86s, that are faster than 66MHz, are 3-volt CPUs.
AMD made some 5-volt 486DX2 80MHz chips (including mine) for a short
while, but switched those to 3-volts also. If you have an older
motherboard, you need a 5-volt to 3-volt regulator module that sits
between your CPU and the CPU socket. These generally cost $40-$50
from what I've seen.
If you stick with a 66MHz or slower part, you probably won't run into
this problem.
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Michael L. VanLoon michaelv@HeadCandy.com
--< Free your mind and your machine -- NetBSD free un*x >--
NetBSD working ports: 386+PC, Mac 68k, Amiga, Atari 68k, HP300, Sun3,
Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32...
NetBSD ports in progress: PICA, others...
Roll your own Internet access -- Seattle People's Internet cooperative.
If you're in the Seattle area, ask me how.
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