Re: Attn admin: Best pci NICs by cpu usage.

Posted on 2021-02-27, 13:54

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Make sure you define which OS you're talking about, drivers make a MASSIVE difference in CPU load, as minimal ones don't offload any CPU cycles but advanced ones can take advantage of chip functionality. So what's fastest in Win2k/XP might be slowest in Win9x and vice versa. Also make sure to get …

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Re: Pentium CPU issue

Posted on 2021-02-27, 13:50

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

[...] Maybe I missed it, but it would really help if you could provide us with a model number of your board. PARKE figured it out but posted link, not name. It's a Jamicon/Kaimei KM-T5-V3+ Your memory issues sound like a compatibility issue with (basically) the memory chips used on your RAM being …

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Re: Do you have SoYO branded motherboards?

Posted on 2021-02-27, 13:42

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Generally positive about Soyo, significantly above-average build quality. PCB thickness and layout in So3 to So7-era reminded me of contemporary Asus. Only big negative was the way they did their best, first with stickers, later with complete relabeling, to hide what chipset you were getting (or …

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Re: TEA2025B and CT1740 mono sound coming through, checked all caps troubleshooting

Posted on 2021-02-26, 13:46

by

by dionb

in Marvin \ Sound

in Marvin \ Sound

Can't find my spare TEA2025B, so ordered two online. I don't have an official desoldering iron, but am confident I can get the pins free with my Ersa iron and a separate sucker.

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Re: Best and worst sound cards you have ever owned?

Posted on 2021-02-26, 13:31

by

by dionb

in Marvin \ Sound

in Marvin \ Sound

[...] All three ALS100 cards I've bought now refuse to work on my machine, one is detected by Windows/UNISOUND only works for a couple of seconds, the others aren't detected most of the time and when they are they refuse to play audio as well. It might be due to my specific machine (Compaq Deskpro) …

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Re: Best and worst sound cards you have ever owned?

Posted on 2021-02-26, 01:20

by

by dionb

in Marvin \ Sound

in Marvin \ Sound

Ya, I can't stand anything creative. While the AWE64 has been card I have ever owned there is enough things wrong with it to always experiment and look elsewhere for other alternatives. It pretty much just works but the wavetable is not that good and the CQM is not that good, other than that its …

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Re: Sound Blaster 16 & AWE: From best to worst

Posted on 2021-02-26, 01:12

by

by dionb

in Marvin \ Sound

in Marvin \ Sound

interesting, my ALS007 worked just fine with DOTT yes, MAYBE i have an ALS007 somewhere? one thing is for sure, the ALS007 is definitely not the same chip as the ALS100 with a different marking; the Windows drivers have different INF files: 5118 05-15-96 17:41 ALS007.INF 5069 05-15-96 17:36 ALS100. …

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Re: TEA2025B and CT1740 mono sound coming through, checked all caps troubleshooting

Posted on 2021-02-26, 01:08

by

by dionb

in Marvin \ Sound

in Marvin \ Sound

No thoughts other than that I have exactly same symptoms on my CT1750 MCD, so I'll be watching this thread in case a solution presents itself. I'm no huge SB16 fan and I have enough of them to be willing to try something like desoldering the TEA2025B - I might even have a spare knocking around …

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Re: Best and worst sound cards you have ever owned?

Posted on 2021-02-26, 01:04

by

by dionb

in Marvin \ Sound

in Marvin \ Sound

Oh well, if we're going to necro I might as well chip in. Best: Aztech MMSN824 (marketed as Sound Galaxy Pro 16 II and others). Bulletproof SBPro2 + WSS with real OPL3 and bug-free MPU-401 and low noise levels throughout. Nothing special, it just works and does so in every situation I've thrown at …

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Re: Need some advice for recapping a motherboard

Posted on 2021-02-26, 00:34

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bulging is just the penultimate stage of deterioration in bad caps, they are way out of spec before they show any outward signs of damage. In any event, replace all caps of same type as one that's bulging, so the 3300uF and 1000uF caps. I don't see any bulging on the 1200uF caps (unusual rating...), …

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Re: Pentium CPU issue

Posted on 2021-02-25, 16:22

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

[...] The i.d. is partially visible on the board in the 1st photo, bottom right: https://www.elhvb.com/mobokive/archive/Kaimei%20-%20Jamicon/manual/KM-T5-V%203.0/kmt5v3.pdf https://www.elhvb.com/mboards/kaimei/km-t5-v_3/photo.jpg Well spotted/extrapolated! So, no 2.8V setting, but 2.7V and 2.9V. …

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Re: Original Hardware: PCI clock measuring device.

Posted on 2021-02-25, 11:53

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nice!

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Re: Building RetroPC which PSU?

Posted on 2021-02-25, 11:52

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@dionb your calculations are correct, however you're considering CPU's max power at 62 Watts, which should be only the case when running programs like Prime95. During actual gaming the power draw should be lower, as it is also stated on cpu-world.com: Typical Power 49.4 Watt. True, but you always …

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Re: Building RetroPC which PSU?

Posted on 2021-02-25, 10:46

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is one of the more challenging builds as it's one of the last motherboards with CPU power via 5V, and a 'hot' CPU on it. The CPU's max power draw is 62W. That's 12.4A net at the CPU. Allowing for 80% efficiency of the DC-to-DC regulators means the board will draw 15.5A for the CPU alone. Then …

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Re: Pentium CPU issue

Posted on 2021-02-25, 09:00

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

[...] How would I know and what do i do? How would you know? Well, it's quite literally printed on the CPU itself: https://cdn.cpu-world.com/Images/uploaded/0000/21/L_00002145.jpg (this is a black OPGA P55C, but the purple ceramic CPGA has it on there too). As for what to do, that depends on your …

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Re: Pentium CPU issue

Posted on 2021-02-25, 01:10

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

[...] Thanks, Ill get all that info when I open it up a gain tonight. I didnt change any jumpers at all. Then you are definitely running the CPU 0.5V too high. Fortunately for you the P55C is one of the most overengineered pieces of silicon out there and it can take a lot of abuse - but it will get …

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Re: Pentium CPU issue

Posted on 2021-02-24, 19:18

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OK well since I got my 486 working well, its time to go back to the pentium 1. It still randomly freezes or reboots when playing games. its a P1 200 MMX Sound blaster live 5.1 Voodoo 3 2000 32 megs of ram windows 98 Pics give a good picture of the state of the system, but hardly help in ID... - …

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Re: Keyboard Suggestion?

Posted on 2021-02-23, 18:48

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

[...] I've kept my eyes open for the SGI version of the AT101 but have never been able to find one; it would be cool to have an SGI keyboard. No meta/Windows keys though. Don't miss those keys ;) I was lucky, a former SGI collector in Hilversum got his wife pregnant and needed the spare room for …

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Re: Keyboard Suggestion?

Posted on 2021-02-23, 10:29

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You could try to find a beige Dell AT101W, it's got Alps switches, a Windows key, and is PS/2. Limited key rollover, though. I have the SGI Bigfoot, which is a granite-coloured version of the same board. Not bad, but Alps switches get very scratchy with age and I haven't found time/energy to …

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Re: Keyboard Suggestion?

Posted on 2021-02-23, 08:19

by

by dionb

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

[...] Thanks that technical bit is great to know. It looks like I will have to either get exactly the model F, or probably a modern mechanical keyboard to be sure that it will perform. Too bad, I really like the look (and price) of that KB-8923. Authentic IBM or not. dr_st I don't need true nkey …

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