Re: Convert USB keyboard to PS/2 or AT?

Posted on 2023-08-18, 23:26

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I just got a 486 motherboard, ASUS PVI-486SP3 and now in a similar situation. Instead of converting 1 USB keyboard to PS/2, I want to convert 1 keyboard AND 1 mouse to 1 AT connector. The straightforward way as already pointed out is to just get a PS2/USB combo keyboard and multiplex them, but I …

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Re: Instability when using 100 MHz FSB on 440ZX

Posted on 2022-12-07, 07:21

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

mod onboard integrated PGA socket for coppermine Wow, never thought that was possible since PPGA sounds much more different from FCPGA (Coppermine) than FCPGA with FCPGA2 (Tualatin) Anyways, it's not worth it. I'm just going to get another microATX motherboard. The reason I was try that much on …

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Re: Instability when using 100 MHz FSB on 440ZX

Posted on 2022-12-04, 10:08

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ugh, just tried a 1.1 GHz Coppermine but memtest still locks up on the block move test. "CPU will use whatever AGTL signaling levels motherboard feeds it on Vtt pins, Vtt powers CPU output buffers. So your P3 is running on 1.5V." Ah, I see there's separate power pins for IO (VCC 1.5) and power (VCC …

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Re: Instability when using 100 MHz FSB on 440ZX

Posted on 2022-11-22, 08:51

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Rasz, ignore the vertical scale. The ADC calibration is messed up and I don't have time to fix it. The 1st image was without any triggering. I repeated the earlier voltage drop tests by setting the time scale to 0.5us and with a trigger level close to 95% of regular. Didn't trigger. Also tried …

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Re: Instability when using 100 MHz FSB on 440ZX

Posted on 2022-11-21, 10:29

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

_with a scope_, and also Vtt Heh, didn't realize how un rigorous my testing is. In mathematics, saying ∀ - something holds for all cases is hard. I set a trigger on my DSO Quad 203 to ~90% of the regular voltage. The trigger level was set visually, so not too precise. It's the T arrow on the left …

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Re: Instability when using 100 MHz FSB on 440ZX

Posted on 2022-11-20, 08:51

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

OK, I measured Vcore on a capacitor on the slotket with Memtest86 running and it matched what the BIOS reported, 1.55V. Also tried another power supply, but not the pre 2.03? that Horun suggested. I think that's because the older ones had more power on the 3.3 and 5V rails? Also checked for anything …

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Re: Instability when using 100 MHz FSB on 440ZX

Posted on 2022-11-10, 03:35

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

"Does it work proper with an older (sub v2.03 type) ATX PSU ?" Don't have any. I think you mean just try any conventional ATX power supply instead of the HDPLEX 200. Good idea. "I presume the RAM you tried is rated for 100MHz ). Is it ?" Yes, it's PC133 and it passed memtest86 on another 440BX …

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Instability when using 100 MHz FSB on 440ZX

Posted on 2022-11-09, 22:46

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://www.vogons.org/download/file.php?mode=view&id=149726 Hello, I have a P6ZXT-Me motherboard with a 1.4 GHz Tualatin Celeron (on a slot1 adapter) and 512 MiB RAM. Unfortunately when playing games, it would lock up after ~15 min. It happens in Halo the worst. Then I ran memtest86 which gets …

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Re: Overheating EMU8K on AWE32 CT2760

Posted on 2020-11-28, 05:51

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by spacesaver

in Marvin \ Sound

in Marvin \ Sound

I didn't try to. Before I got the AWE32 to work in DOS, I gave up hope and bought an Audigy 2 ZS. For me, Audigy 2 is actually better than AWE32 even for DOS games running in Windows because then you can load massive SoundFont banks, while AWE32 is limited to 28 MiB. I just looked at the loaded …

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Re: Overheating EMU8K on AWE32 CT2760

Posted on 2020-07-28, 08:00

by

by spacesaver

in Marvin \ Sound

in Marvin \ Sound

OMG, it all works now, but only from DOS. Thanks for the tip @TheMobRules. Big payoff, we got Dick Tracy out of the way... I've put a heat sink on. Temperature is much better now (50C). I'm really relieved the card was OK all along.

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Re: Overheating EMU8K on AWE32 CT2760

Posted on 2020-07-28, 05:04

by

by spacesaver

in Marvin \ Sound

in Marvin \ Sound

I mean I suspect my EMU8k is permanently latched up, not yours. This high temperature is retarded. In 1995, Moore's law, and more importantly Denard scaling, was alive and well. GPUs and CPUs didn't even have heat sinks. Leakage power was negligible. I'm trying to think how many multiply adds the …

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Re: Overheating EMU8K on AWE32 CT2760

Posted on 2020-07-28, 00:53

by

by spacesaver

in Marvin \ Sound

in Marvin \ Sound

Keep in mind that the CT3930 is a rare specimen of SB32... Yes, this is a very precious card ! I got it off of eBay for no more than the much more common CT3600. But unfortunately, I didn't get to test it until after the return period expired because my motherboard (ASUS CUBX-E) ordered from …

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Re: Overheating EMU8K on AWE32 CT2760

Posted on 2020-07-27, 08:35

by

by spacesaver

in Marvin \ Sound

in Marvin \ Sound

I'm also have an EMU8k burning up on my CT3930. It's @ 82.6 C ! Looks like at least 2 other people confirm this IC405A gets very hot. @ TheMobRules, how hot does yours get? Hot or not hot, this card isn't detected by Windows 98 at all. It did get detected for a day or 2 right when I 1st plugged it …

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Promise ATA 100 controller makes Windows 98 hang at startup

Posted on 2020-07-22, 11:10

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's been 2 weeks since I've set up my 1st retro desktop and one of my last hurdles is getting fast disk access. I have a CUBX-E with a Promise PDC20265 IDE controller, attached to SSD through an IDE->SATA adapter. It runs at ATA66. I successfully installed the Win9x driver from http://firstweb. …

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Re: Can't load Soundfonts on Audigy 2 ZS

Posted on 2020-07-22, 10:46

by

by spacesaver

in Marvin \ Sound

in Marvin \ Sound

I can load Sound fonts now! The trick was running CTZAPXX to install the drivers instead of manually using Device Manager. That also installs the 2MB sound font to C:\Windows\system and creates some MIDI interfaces. In control panel -> Multimedia -> MIDI, there are now 4 interfaces instead of 2. …

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Can't load Soundfonts on Audigy 2 ZS

Posted on 2020-07-18, 23:27

by

by spacesaver

in Marvin \ Sound

in Marvin \ Sound

MIDI enthusiast here. I have an Audigy 2 ZS (Gateway OEM SB0355) and Win98SE. I cannot run Creative Soundfont manager. I get "SoundFont Manager initialization failed" . Diagnostics also don't work, but I do have sound. I suspect this could be an incomplete installation. I couldn't install directly …

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Re: Possible to put Tualatin in a 440BX with Slocket?

Posted on 2020-05-27, 10:13

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Alright, I gave up on my small form factor obsession and bought a ASUS CUBX-E on eBay. What changed my mind is reading Anandtech's excellent review of 133MHz 440BX motherboards on 6/2/2000. I realized how much I was missing compared to those 2 smaller, older boards: ATA 100, more USB ports, good …

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Re: Possible to put Tualatin in a 440BX with Slocket?

Posted on 2020-05-26, 02:58

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

"Multiplier is locked on Tualatin CPUs anyway" Aha, so that's why it's not worth it to install a Pentium 3 in an adapter and running @ 100MHz FSB, because it will run 1.33x slower. Thanks for clearing things up and congratulations on having that rare Powerleap adapter. I think I will go for that …

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Re: Possible to put Tualatin in a 440BX with Slocket?

Posted on 2020-05-26, 01:23

by

by spacesaver

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

1st timer here trying to build a DOS/Windows 98 PC. I've settled on 440BX for compatibility and ISA sound card. I found this thread very useful. Except now in 2020, the Powerleap adapters are rarer. I found only 1 listing on Amazon for $299. If it really has compatibility with any slot 1 motherboard …

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