Date: Thu, 20 Jun 1996 14:35:45 +0300 (EET DST) From: "Andrew V. Stesin" <stesin@elvisti.kiev.ua> To: dutchman@spase.nl (Kees Jan Koster) Cc: hardware@freebsd.org Subject: Re: AMD 586 in P24T slot? -- No, P24"D" one Message-ID: <199606201135.OAA13309@office.elvisti.kiev.ua> In-Reply-To: <199606190743.JAA00492@phobos.spase.nl> from "Kees Jan Koster" at Jun 19, 96 09:43:06 am
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Hello Kees Jan, # > Try another CPU -- Intel or AMD (AMD 5x86 strongly recommended, # > in case your motherboard supports it. If it doesn't, you # > may try jumper settings for Intel P24D -- theyr'e Ok # > for AMD 133 too) # > # Ummmm. Now this sounds interesting. I lived under the assumption that I # needed a special mainboard to sport an AMD 133. You wasn't 100% correct. As about recent 486 boards, they usually have AMD 133 explicitly listed in jumper setting sheets. As about older ones, the things aren't so simple -- you might be lucky with a guessed probability of above 80%. # I have a SOYO any-486 mainboard. We have some this SOYO boards, too. But didn't tried AMD 133 in them, for a pity (going to do this), 'cause we are getting AMD 133 already installed in newer boards, Taiwanese ATC-1425B ones. # I can jumper it to accept those cute # pentium overdrive processors. I don't have the booklet here, but I seem # to recall they call the overdrive processor P24T. Could I use its jumper # settings for an AMD 133? There are two P24x beasts, they ARE different. One is P24D, another is P24T. I don't know the exact difference between them. (AFAIK P24D is Intel DX4/100 with 16k WB L1 cache). From the expirience of my friends (AMD 133 is very popular here) and from the Usenet discussions _AND_ looking at ATC-1425B board's manual, I can tell you, that on the board which doesn't support AMD 133 out-of-the-box you should try jumper settings for Intel P24"D", not "T"; _OR_ the settings for Enhanced AMD (they are very similar; special setting for AMD 133 includes a single extra jumper to be "closed" compared to either P24D or Enh. AMD; my guess is that this jumper controls WB internal cache behaviour). You may also ask FreeBSD gurus, some of them are happily running AMD 133 in ASUS SP3G (SaturnII) boards; ask them what settings do they use. I think that a bit of experimentation and (or? ;) support from your vendor will solve the problem. If you can get a 133 chip for a day or two of testing before buying it -- that will suffice, too. For a pity, attempts to use 5x133 in older boards might cause the nessesity of motherboard's BIOS firmware upgrade :( # Groetjes, # Kees Jan # # ======================================================================v== # Kees Jan Koster e-mail: dutchman@spase.nl # Van Somerenstraat 50 tel: NL-24-3234708 # 6521 BS Nijmegen # the Netherlands # ========================================================================= # Who is this general Failure and why is he reading my disk? (anonymous) # ========================================================================= # -- With best regards -- Andrew Stesin. +380 (44) 2760188 +380 (44) 2713457 +380 (44) 2713560 "You may delegate authority, but not responsibility." Frank's Management Rule #1.
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