Re: Need help with 486 motherboard identification
Posted on Yesterday, 21:33
That board is from early 1992, so quite old. Of course it only supports 5 volts cpus. So put in an intel DX or DX2. 5 volts only.
Re: 486 board Young Micro Systems VEGA 486 Green PC
Posted on 2024-05-01, 18:06
I celebrated too early, the Windows 98 SE crashes when trying to start to copy files. With aggressive timing parameters even earlier. I tried several things: Replaced the VLB graphics with an ISA graphic card, set one VESA wait state + bus speed > 33. Setup default values in Bios. So I will try …
Re: 486 board Young Micro Systems VEGA 486 Green PC
Posted on 2024-05-01, 12:18
I was not able to get SpeedSys working on the motherboard here. High chance L1 cache is in WT mode, which is not necessarily a bad thing. Many systems like it better that way. My notes don't talk about manual discrepancy, but there is a chance i simply didn't log it. Cannot remember details anymore …
Re: Can someone tell me what all these parts are worth as a single lot
Posted on 2024-05-01, 11:44
Wow thank you guys I was checking for the first two days with no replies so today I checked and 9 replies, CoffeeOne I'm not unwell or dying I hope "I don't have time" wasn't on anyone's mind in that way its just that I live in the country and getting to the local post office is a 2 hour drive …
Re: M915i jumper setting for P24T(Pentium Overdrive)?
Posted on 2024-05-01, 11:37
maxtherabbit wrote on 2024-05-01, 11:32: CoffeeOne wrote on 2024-05-01, 11:08: On the other hand, the CPU supports also voltage detection, so when the mainboard provides the 3.5 volts, the voltage regulator on the cpu is not used. I don't think that's true, you have to provide it 5V for correct …
Re: M915i jumper setting for P24T(Pentium Overdrive)?
Posted on 2024-05-01, 11:08
https://www.cpu-world.com/CPUs/Pentium/Intel-Pentium%20overdrive%2083%20-%20PODP5V83.html PODP5V83 - where P entium O ver D rive P rocessor 5V 83 MHz?))) Yes, it is a upgrade CPU, so it works on 5 volts only mainboards. On the other hand, the CPU supports also voltage detection, so when the …
Re: M915i jumper setting for P24T(Pentium Overdrive)?
Posted on 2024-05-01, 11:05
385387386 wrote on 2024-05-01, 10:36: Now, POD83 @83MHz running quake at 19.3 frames per second with fake cache. Great! As already mentioned, those quake values are not really useful, you have to repeat it with a PCI graphics card.
Re: Can someone tell me what all these parts are worth as a single lot
Posted on 2024-04-30, 22:47
I must stress I am not looking to sell here I am only asking advice on what all these parts are worth as a single lot Hi all can someone tell me what all the below parts are worth as a single lot I'm hoping to sell them as one lot instead of separating them I know I can sell the motherboards …
Re: 486 board Young Micro Systems VEGA 486 Green PC
Posted on 2024-04-29, 22:15
Cool. This looks better indeed. That 64Mb RAM only in Windows looks like stability/incompatibility problem. I don't think i tested this board with more than 64Mb system memory, so don't know. Also, do you get SpeedSys showing on your system ? That can show you if L1 is in WB or WT mode. Short …
Re: Doubts about L2 cache on 486
Posted on 2024-04-29, 20:29
Hi, im building a 486 PC for my personal collection, and i chose a AB-PB4 motherboard. Is not a bad one, exept some problems works very good, and support my Cyrix 5x86 100mhz CPU without problem One thing i really curious is about L2 cache, now have 256kb 702e1432-adf0-4d9d-8446-d8cdb44a03e6.jpg I …
Re: M915i jumper setting for P24T(Pentium Overdrive)?
Posted on 2024-04-29, 18:20
33MHz, I try to short the GND dot and Sensor dot with a wire, but it failed to boot. Any way to work around to get 83MHz back? Thanks. I guess it ran then at 83MHz when it failed to boot. It might simply be broken, maybe it was run without a heatsink for a long period of time and now only can run …
Re: No beep codes from motherboard
Posted on 2024-04-28, 19:12
Unfortunately I don't have any programmers and I don't really want to spend CAD $100 on something that I may only use a couple times. Thank you for the suggestion though! I understand. But I found a picture of this board, and there was a sticker on the Bios. Yours does not have it, so that is …
Re: No beep codes from motherboard
Posted on 2024-04-28, 18:40
Unfortunately I don't have another CPU that will work in this board. This CPU was pulled from a working system. Before throwing the board away, check the bios. You need a EEPROM programmer, like a TL866II-Plus. Unfortunately I don't have any programmers and I don't really want to spend CAD $100 on …
Re: No beep codes from motherboard
Posted on 2024-04-28, 17:56
johnvosh wrote on 2024-04-28, 12:18: goofyahhuncle wrote on 2024-04-26, 07:20: Have you tried testing the CPU in another board or swapping in a different CPU? Unfortunately I don't have another CPU that will work in this board. This CPU was pulled from a working system. Before throwing the board …
Re: M915i jumper setting for P24T(Pentium Overdrive)?
Posted on 2024-04-28, 15:36
Glued 6 small heatsinks on the top. Does it now run at 33 or 83MHz? 33MHz, I try to short the GND dot and Sensor dot with a wire, but it failed to boot. Any way to work around to get 83MHz back? Thanks. I guess it ran then at 83MHz when it failed to boot. It might simply be broken, maybe it was run …
Re: RAM Issue DELL 425s/L
Posted on 2024-04-27, 15:00
I'm having trouble trying to upgrade the RAM on my DELL 425s/L According to the manual the machine should take up to 64MB RAM. I am forever stuck with 03360K RAM no matter what sticks I try, its either that or the machine wont post. When I got the machine it came with a stick of 8MB EDO RAM but the …
Re: M915i jumper setting for P24T(Pentium Overdrive)?
Posted on 2024-04-27, 14:44
385387386 wrote on 2024-04-26, 23:44: Glued 6 small heatsinks on the top. Does it now run at 33 or 83MHz?
Re: Pentium PRO?
Posted on 2024-04-26, 21:31
luckybob wrote on 2024-04-26, 17:59: Does anyone else think this thread has gotten COMPLETELY derailed? +1 🤣
Re: Windows 98SE 486 requirement
Posted on 2024-04-26, 20:05
I've just learned that Windows 98SE won't install on a 386 - the minimum is 486. Any idea why? Is this just artificial limitation, so that nobody complains that it runs sluggish on a 386 ? Or it actually uses 486 instructions somewhere? Is it possible to make it run on a 386 via some patch, perhaps …
Re: Windows 98SE 486 requirement
Posted on 2024-04-26, 19:56
I had Windows 98se running on 8mb ram with a 386, the mouse cursor would hop around and freeze any time there was some sort of activity 8MB is not enough for Windows 98SE. Even with a faster Pentium CPU. You should have done the test with 32MB RAM for example. EDIT: The video above is like that, …
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