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This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.

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Wanted: Pair of Slot 1 Pentium III CPUs - 750MHz and up

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    #16
    Apparently these will run at 750MHz at that FSB speed though, which is all I am targeting at the moment (though 133MHz is meant to be possible).

    I guess flashing the BIOS again to be sure can't be a problem, but I think they just forgot to increment the number as dumping the ROM seems to create a file identical to the updated bios file and not the original. I'll try it when I've had some sleep.
    YouTube (Mostly DOS Stuff) | Let's Plays (Mostly DOS Games) | Twitch.TV | Duke4.net
    DOSBox sucks, my Casio is better than your Roland and my clone is better than your overblown proprietary box.

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      #17
      Actually, I'd make sure you had the correct bios. As for the 133 running @ 100. I know that they SHOULD, but that's never 100%. Also, the bios is probably looking at SL4BS and saying "WTF do I do with this?" The 850 (SL43F, SL47M, SL4BW, SL4KH) was the last "official" 100mhz fsb chip. the 1000/100 I think was more of a fluke to be honest. Looking at us and uk ebay prices, people are wanting a premium for said 850's. A pair for $50us (34 eu) seems to be a "deal".
      It is a mistake to think you can solve any major problems just with potatoes.

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        #18
        Here's what I've got in my P6DGE.

        BIOS is R3.1 (112100130)

        Multiplier is set to x7 at JB1-4 (on-off-on-off)

        CPUs are SL4BS 1000/256/133 1.7V S1 (IBM-branded with purple handles)

        That's what I can see without disassembling the case (EIA rack-mount)

        FWIW, I changed the video card to an ASUS TNT2-VANTA (It's what I had on hand)
        Reach me: vcfblackhole _at_ protonmail dot com.

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          #19
          Seems I compared the wrong file, my BIOS was indeed not updated. I tried flashing again but the same thing happened.

          Turns out if you put the SUPER.ROM backup on the same disk the system pauses before post and flashes that back over the BIOS... POST and the rest of the boot procedure got a nice speed boost too with the update and my DOS prompt doesn't start with ^@^@ anymore (It used to behave as if I had pressed keys during boot).

          Now to test the CPUs... THEY WORK! Now, guess I'll be installing that active northbridge cooler (I found one on a dead KT266 board that fits plus the heatsink is twice as thick. Better take care of the CPUs first though, they have huge passive heatsinks on that I swear are made of steel... I never liked Dell.

          I use a Radeon VE in my system... So really I don't have room to criticise other people's cards given that I and the people I hang about with consider those a bit of a joke - most OpenGL people do, it's mostly the fault of drivers. The reason I dislike 3DFX probably comes from being into the demoscene, sceners don't like 3DFX which is why you won't find many demos for them. Might put the GeForce 4 Ti in here though as I am parting out my Athlon 1400 system. I'll likely throw a YouTube video of the machine up in a few days anyway.

          Thanks for the help, I shall report back if I need anymore.
          YouTube (Mostly DOS Stuff) | Let's Plays (Mostly DOS Games) | Twitch.TV | Duke4.net
          DOSBox sucks, my Casio is better than your Roland and my clone is better than your overblown proprietary box.

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            #20
            I haven't fooled with the multiplier jumpers, but I suspect that they probably don't do anything with later P3s.

            Anyway, good to hear that you're getting past watching the fans spin.
            Reach me: vcfblackhole _at_ protonmail dot com.

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              #21
              Originally posted by Chuck(G) View Post
              I haven't fooled with the multiplier jumpers, but I suspect that they probably don't do anything with later P3s.

              Anyway, good to hear that you're getting past watching the fans spin.
              you can set the multiplier to whatever you want, it wont matter. ever since the introduction of the pentium 2, chips have been locked. But if you find engineering samples... different story.
              It is a mistake to think you can solve any major problems just with potatoes.

              Comment


                #22
                I figured out the 2GB issue while I had the box out of the rack. It turns out it wasn't Win98SE at all that was hanging things up.

                I use Grub as my multibooter. It turns out that the older version of Grub I have installed has an issue with the memory space full (440GX limit is 2GB).
                Grub wants to boot in graphics mode and takes forever (like about 45 seconds) to get the menu up when it can't figure out where to put an AGP aperture.

                The easy fix is to change the Grub configuration file to keep things in text mode. Just adding

                GRUB_TERMINAL=console

                does the trick.
                Reach me: vcfblackhole _at_ protonmail dot com.

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                  #23
                  Ah, well, if anyone is interested, I've got my YouTube video done; http://www.youtube.com/watch?v=X1X9HOQ6aKA

                  I also added a Special Thanks at the end, though I put "member of the vintage-computer.com" forums, as I didn't know if you wanted your names plastered all over the web.

                  Oh, I'm also glad to hear you got the memory issue sorted. I had problems with the bootloader too (Windows XP's one) as it doesn't like dual-booting with Win9X on SCSI. I installed the OS on the IDE drive and just install programs to the SCSI drive so it likely doesn't do that much harm to performance.
                  YouTube (Mostly DOS Stuff) | Let's Plays (Mostly DOS Games) | Twitch.TV | Duke4.net
                  DOSBox sucks, my Casio is better than your Roland and my clone is better than your overblown proprietary box.

                  Comment

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