Re: Bf0, Bf1, Bf2 Multiplier Mod

Posted on 2022-03-21, 15:35

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah basically the idea is to solder this board over that entire area tapping in to a number of socket pins and not only offer the mod you have there, but also a way to disable it and a way to toggle between wt and wb. As well as several other mods for a range of usses, such as getting tillamooks …

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Re: Adding 3.3v to pci

Posted on 2022-03-21, 14:18

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks Catsay!

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Re: Bf0, Bf1, Bf2 Multiplier Mod

Posted on 2022-03-21, 14:03

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I did the resistor mod on my ASUS P5A recently, but a dip switch on the CPU would be a lot nicer. I would rather not have this bodge on my board if it can be moved to the CPU. That way it can be easily enabled or disabled for testing. The idea is to have this on the back of the motherboard …

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Re: Adding 3.3v to pci

Posted on 2022-03-21, 13:43

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think this is an error. There should never be 5V on the 3.3V pins of the slot. The issue that scheiss_freak experienced was a result of drilling through the notch on his card and inserting it into the wrong slot. The problem was on his card, not the motherboard. Your entire reply is what I …

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Re: Socket 7 motherboard condition? Totem TM-586 TX4

Posted on 2022-03-21, 12:33

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PcBytes wrote on 2022-03-21, 12:17: If time isn't an issue, I could look for mine. I have a TM-586TX4 as well, never recapped, all original caps intact. EDIT - here are some photos for the database. As for the caps near the CPU, they all have 1500uF 6.3v printed on them. Thanks pcbytes! You rock!

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Re: Socket 7 motherboard condition? Totem TM-586 TX4

Posted on 2022-03-21, 11:41

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Btw, you say that’s a 430tx, Your max system specs are (if you are curious) -256mb sdram -K6-3+450mhz (500 if you can find a undocumented 83.3mhz fsb setting) -A radeon 7500 would probably work very well as a gpu in that board. Geforce 2 mx400, and voodoo 5 are other good options. The 7500 is …

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Re: Possible to run K6-3 with vcore of 2.8v?

Posted on 2022-03-21, 11:11

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello, I believe I can help you. I need to see a good pic of your motherboatd though. High res, so I can read the markings, and uninstructed so I can see model numbers, and parts installed (mosfets, inductors, etc) If all looks well, you can probably even run a k6-3+ cpu A note on your chipset: …

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Re: Socket 7 motherboard condition? Totem TM-586 TX4

Posted on 2022-03-21, 10:54

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Btw, you say that’s a 430tx, Your max system specs are (if you are curious) -256mb sdram -K6-3+450mhz (500 if you can find a undocumented 83.3mhz fsb setting) -A radeon 7500 would probably work very well as a gpu in that board. Geforce 2 mx400, and voodoo 5 are other good options. The 7500 is easier …

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Re: Socket 7 motherboard condition? Totem TM-586 TX4

Posted on 2022-03-21, 10:49

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Often times helping deksor update UltimateRetro for your board will pay back dividends I highly suggest you try to dump the bios and take good pics. While the Ultimate retro team updates the entry for your board they often come up with manuals, settings, more bios versions, and all sorts of useful …

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Re: Which USB 2.0 cards for old motherboards

Posted on 2022-03-21, 10:40

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Today the 3rd NEC card arrived. D720101F1 > D720101GJ > D720100AS1 D720101F1 did almost reach 20MB/s on my Super Socket 7 system (DFI K6XV3+/66 with VIA MVP3 chipset + K6-III+ @ 550MHz). Also tested an ALi chipset, but that one did only reach 12MB/s on a modern system, so I didn't even try it on …

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Re: Adding 3.3v to pci

Posted on 2022-03-21, 10:36

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://www.vogons.org/viewtopic.php?f=46&t=86969&p=1054366#p1054366 We may have a new voltage source soon Can someone with more understanding put together a guide on how to test and make sure the mod will work? I hear that some older mobos use 5v on these pins? Is that true? Edit: Catsay on discord …

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Re: Bf0, Bf1, Bf2 Multiplier Mod

Posted on 2022-03-21, 09:30

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Edit: an image of the prototype from wiretap 5D830531-1476-4AE9-AF08-36C2306D46CB.jpeg - new schematic New Bitmap Image.png . check me for errors. I couldn't decide if the wt/wb should be a tripple throw so it had a neutral position or if it should be two switches seems like two switches is best …

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Re: The Case Badge Thread

Posted on 2022-03-21, 07:14

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

feipoa wrote on 2022-03-21, 06:09: Here's a case badge I made for my 286 system which contained a Cyrix Cx486SLC2-50 upgrade processor. Case_Badge_-_SLC286-to-486_clean.png Wow, I didn’t even realize that you could go from 286 to 486. That’s really cool. I like the msdos stickers also. That someone …

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Re: Bf0, Bf1, Bf2 Multiplier Mod

Posted on 2022-03-21, 06:37

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

how's this? 803CC0C4-2F2A-42EF-9740-36A7AF19524C.gif ugh, I wish I could upload bitmaps You need 3 separate 25 Ohms as well :) [Edit; had posted my reply inside quotation] [Edit 2 - Never mind, you don't need, I guess] :lol: [Edit 3] You might not need 3 separate pull-downs per se, but you'll might …

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Re: SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod

Posted on 2022-03-21, 01:27

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, Thanks Sphere478 for that mod idea :) I have bought 9x K6-2+ 570 from ebay and selected the most stable one to make mod. I have put Thermal grizzly Kyronaut on die and glued cover with silicone - automotive gasket to 350 C :) Now it is more stable than before mod :) Can run DOS benchmarks at …

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Re: Replacing jumpers with dip switches

Posted on 2022-03-21, 00:59

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yeah maybe a back panels insert would be cool with toggles. And just plugs onto the jumpers. I've done this!!! https://i.imgur.com/vXVjgw5m.jpg That was my solution! Just use hookup wire with some switches and route them to the front where I don't have to even open the case. In fact that case has a …

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Re: SUCCESSFUL K6-2+ to K6-3+ Full Cache Enable Mod

Posted on 2022-03-21, 00:51

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, Thanks Sphere478 for that mod idea :) I have bought 9x K6-2+ 570 from ebay and selected the most stable one to make mod. I have put Thermal grizzly Kyronaut on die and glued cover with silicone - automotive gasket to 350 C :) Now it is more stable than before mod :) Can run DOS benchmarks at …

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Re: Heatsink glue for Pentium 233MMX?

Posted on 2022-03-21, 00:41

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The diagonal clip may still work, I can’t find a pic but it’s a wire torsion clip you might be able to make. there also are options that clip directly to the chip it’s self. And the athalon clips use three notches. Micron has a screw on one that clips to the processor it’s self and screw tightens. …

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Re: Bf0, Bf1, Bf2 Multiplier Mod

Posted on 2022-03-21, 00:13

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some notes: The voltage detect mod should probably have a resistor pad and a switch Cache mod #1 should have a pad and a switch Cache mod #2 should have a pad and a switch I believe the tillamook bf mod might be able to just be a link, but to be safe we should give a pad and a switch. The bf2 …

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Re: Bf0, Bf1, Bf2 Multiplier Mod

Posted on 2022-03-20, 23:30

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here's a KiCAD v5 PCB-only file you can mess with. I also generated the gerbers in there too. The board outline will probably have to be brought in closer to the pins to clear the ZIF lever. If you were to build this, I'd recommend milli-max individual pins soldered through the board so it can go …

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