Re: Glue a heatsink to a 486
Posted on 2013-08-10, 18:48
I know a seller on eBay who sells them for $4 each. This is about double the cost you can find them from looking around on seekic.
Re: Glue a heatsink to a 486
Posted on 2013-08-10, 07:35
Janoz, I am very interested if you can run this board with 1024K, the tightest cache/memory timings, and 2x64MB FPM memory. If it is not too much to ask, a test with an AMD X5-133 and AMD X5-160 would be appreciated. L2 set to WB mode. I have a dead one of these boards, but I am using it as part of …
Re: Glue a heatsink to a 486
Posted on 2013-08-09, 20:33
Janoz, how much cache do you have installed and what cache timings are you using for 50 MHz operation? Have you tried 1024K in this motherboard?
Re: Glue a heatsink to a 486
Posted on 2013-08-09, 15:13
I was informed by the seller of the z-clip that the end-to-end length is 6.6 cm. I measured my socket 3 tabs, they are 6.1 cm end-to-end. I am not pleased with this sellers price for 5 units. Anyone in the UK want to buy in bulk and fan-out to the rest of us?
Re: Favorite old OS
Posted on 2013-08-08, 09:06
My favourite Microsoft Windows OS was Windows NT 4.0. I used it as my everyday-use computer for about 14 years. My favourite Apple OS was MacOS 7.5.5 since this was the latest OS to run on an SE/30. I thought Windows CE 2.11 was pretty fast in its day and used it on a handheld MIPS computer for 6 …
Re: Glue a heatsink to a 486
Posted on 2013-08-07, 22:33
I'm having issues with that seller as well. I'm trying to get him to measure the dimensions of the retaining clip. Also, instead of my requested 15 pounds for 5, he put 30 pounds for 5 - a 100% mark-up. Janoz, That looks like a M915 you have there. Does it work? Why does it hae two UM8886AF chips? I …
Re: Owners of the Highend 486 Systems - Please Advise
Posted on 2013-08-06, 17:36
I recommend using double-banked 256K cache instead of single-banked 256K cache, that is, four pieces of 32Kx8. Double-banked cache seems to handle faster timings better.
Re: PVI-486SP3 Documentation / Manual
Posted on 2013-08-06, 10:57
That manual you found is the official manual for this motherboard. It says how to configure everything except where what the pin-outs are for the PS/2 mouse connector. There are only 4 used pins on a PS/2 mouse port and are pretty easy to figure out what they are. The pins are: Vcc (+5V) Ground …
486 motherboard schematics
Posted on 2013-08-06, 02:04
Does anyone have the schematic diagrams or gerber files for 486 motherboards?
Re: Owners of the Highend 486 Systems - Please Advise
Posted on 2013-08-06, 00:41
I've had instances in a 486 w/SCSI system whereby after some time of being turned on (as it heats up), the power connectors would make poor contact and cause erratic behavior. It was most puzzling. What cache configuration are you using? 512K-single-bank, 256K-double-bank, or 512K-single-banked?
Re: Owners of the Highend 486 Systems - Please Advise
Posted on 2013-08-05, 14:47
Read this topic, http://www.vogons.org/viewtopic.php?t=33685 I have troubleshooted this issue on SiS 486 motherboards using an AMD X5-160. The Zida Tomato 4DPS and Asus PVI-486SP3 behave similar in regard to the issues you are experiencing with a 40 MHz bus. Ensure that the ISA bus is at PCI/4, and …
Re: ECS Elite UM8810PAIO REV:2.1
Posted on 2013-08-01, 15:03
Probably, but best to look at ET586.exe /s to be 100% sure. LSSER = 1 by motherboard default, which is not optimal.
Re: Cyrix 5x86 120GP with Biostar MB8433 Version 2
Posted on 2013-08-01, 11:01
No, I'm not using EDO RAM. Which particular CPU, system, and configurations are you comparing? If you are comparing 4x33 vs. 2x66, then the later will naturally have faster memory bandwidth. Also, you are probably using different Cyrix bit settings as well.
Re: ECS Elite UM8810PAIO REV:2.1
Posted on 2013-08-01, 10:57
When you set /lsser=off, is the Lsser bit at 0 or 1? We want LSSER at 0. I recommend using the evergreen bit enabling utility.
Re: ECS Elite UM8810PAIO REV:2.1
Posted on 2013-08-01, 10:30
rgart wrote: After much testing I have found the UM8810-PAIO rev2.1 board... Cyrix 5x86 120 CPU 64MB of Ram Matrox Millenium […] Show full quote After much testing I have found the UM8810-PAIO rev2.1 board... Cyrix 5x86 120 CPU 64MB of Ram Matrox Millenium 3dbench2: 86.1 FP_FAST and BTB_EN = on You …
Re: Cyrix 5x86 120GP with Biostar MB8433 Version 2
Posted on 2013-08-01, 10:24
Feipoa is it your bios update that cycles through bios colours automatically? It's a nice touch. Never seen that happen on any of my boards. Try using the other pre-flashed BIOS chips for this v2012 Biostar. If you are using EDO memory at some point, I think you first should start out ta 4-2-2-2 …
Re: Glue a heatsink to a 486
Posted on 2013-07-28, 22:10
JaNoZ, do you have such a chipset cooler and clip to test on your socket 3 486? If you haven't tested it, I wonder if it still may work? I have sent the seller a message requesting dimensions and the spec sheet.
Re: YELLOWED Plastic
Posted on 2013-07-28, 11:42
...OxiClean... and water. Just mix it fairly strong... about twice the strongest ratio listed on the box, submerge the plastic parts in the mixture, and leave it in the sun for a few hours. While I haven't tried any brightening processes yet, I am curious to try this. When you say "leave it in the …
Re: Glue a heatsink to a 486
Posted on 2013-07-27, 21:21
The more who ask, the more likely he'll agree!
Re: Glue a heatsink to a 486
Posted on 2013-07-27, 21:00
I sent the seller a message requesting him to put up an auction for 5 units at 15 pounds due to multiple interests. We'll see what happens.
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