Date: Sun, 30 Jul 2000 08:14:48 -0500 From: "LART" <lart@mfn.org> To: "John Baldwin" <jhb@pike.osd.bsdi.com> Cc: <questions@FreeBSD.org>, <msmith@FreeBSD.org> Subject: Re: PPro 200's and the BTX Loader? Message-ID: <000501bffa28$2fbe4de0$c991f280@mfn.org> References: <200007290602.XAA32131@pike.osd.bsdi.com>
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General update... (1) No, these are not overclocked CPU's. (2) We have verified that the CPUs and RAMs are all good to go on all O/Ss other than FreeBSD 3&4.x (they pass all diags, and boot/install/run FBSD 2.2.5, win 95, win98, and winnt-svr4.0 just fine). (3) They are all produing the exact same response to the BTX loader (seen below). (4) This seems to be restriced to the 200mhz CPU's - the 180s & 150s work fine - now get this: if we reduce the clocks to 180 or 150 mhz, the problem does not vanish! Obviously, whatever is going on is specific to the 200mhx chip itself (we have tried several different stepping chips now, and all of the 200's seem to be affected here). Is it possible that the loader is trying to use a PPro specific instruction? Maybe the masking for this instruction is blown on the 200s? (5) The motherboards are all ECS P6FX1-A, running Award BIOS 4.51PG (P6FX1-A BIOS 1.4 9/13/96). Thanks! > LART wrote: > [Charset iso-8859-1 unsupported, filtering to ASCII...] > > Greetings, > > > > We are trying to upgrade 7 boxes from PPro 150's to PPro 200's, and have > > run into an interesting problem: the 200's won't boot under the BTX loader > > (they work just fine however on 2.2.5R - go figure?). This is what we get: > > > > Boot from ATAPI CD-ROM : > > 1. FD 2.88MB System Type-(00) > > /boot.config: -P > > Keyboard: yes > > > > BTX loader 1.0 BTX version is 1.01 > > Console: internal video/keyboard > > BIOS drive A: is disk0 > > BIOS drive B: is disk1 > > BIOS drive C: is disk 2 > > > > int=00000001 err=00000000 efl=00244fd7 eip=00000065 > > eax=ffffffff ebx=30cd0000 ecx=cdc03190 edx=0001b830 > > esi=00000000 edi=27706c65 ebp=ffffffff esp=6dbf1458 > > cs=002b ds=0033 es=0033 fs=0033 gs=0033 ss=0033 > > cs:eip=87 45 2c 89 44 24 08 58-87 75 30 87 7d 34 87 6c > > ss:esp=ff ff ff ff ff ff ff ff-ff ff ff ff ff ff ff ff > > System halted > > Umm, well. It has hit a debug exception. Which is quite weird, since > normally no debug exceptions are enabled. Also, both %eip and %esp are > invalid, although all the selectors are ok. It looks like the loader > literally went off into la-la land somehow. One thing you can try to > do is to add in lots of debugging printf's to narrow down where it is > dying. These aren't overclocked CPU's by any chance are they? > > > Anyone have any idea what may be going on here? > > -- > > John Baldwin <jhb@bsdi.com> -- http://www.FreeBSD.org/~jhb/ > PGP Key: http://www.cslab.vt.edu/~jobaldwi/pgpkey.asc > "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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