Re: Artex's 3DFX Voodoo5 6000 Thread

Posted on 2018-04-29, 15:27

by

by gdjacobs

in Marvin \ Video

in Marvin \ Video

He has (had?) a ton of these cards and sadly experimented with various 'cooling techniques' on many of them - some of which did not survive. While many out there are trying to preserve history, there are those like this guy who just destroy it. I believe he has many of the publicly released …

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Re: Socket A with ISA soundcard problems

Posted on 2018-04-29, 15:20

by

by gdjacobs

in Marvin \ Sound

in Marvin \ Sound

I'm pretty sure resource assignments for PCI devices are deterministic when the list of devices is constant. Even if you wipe CMOS, they just go back and grab the same way they did before.

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Re: Pentium 4 DOS machine - choice of two motherboards

Posted on 2018-04-28, 23:42

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The Epox board uses the 865 chipset which is known to work well in DOS with either Vortex 2 sound or YMF-PCI sound (using PC/PCI or the DSDMA TSR). The SIS chipset on the Gigabyte board is an unknown quantity to me in this regard.

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Re: The Mythical Volumetric Shadows in Jedi Outcast

Posted on 2018-04-28, 06:15

by

by gdjacobs

in Marvin \ Software

in Marvin \ Software

Those pictures!! What kinda games you playin?

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Re: GA-468VM / RP2 resistor /motherboard repair

Posted on 2018-04-28, 06:07

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Agree. All of my phone packs as far back as I can remember have been lithium. Didn't even occur to me that they are still making NiMH packs for phones. I actually found some NOS NiCd packs to use, but I know recommending those will be a non starter in some parts of the world. If I didn't know this …

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Re: Multichannel analog+digital DOS mixer for multi format DOS sound builds, COMING SOON!

Posted on 2018-04-28, 05:50

by

by gdjacobs

in Marvin \ Sound

in Marvin \ Sound

CMI 8330 / SoundPro HT1869

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Re: Bought these (retro) hardware today

Posted on 2018-04-27, 16:24

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Money should only be brought up in a few contexts. This is one. https://www.youtube.com/watch?v=crARnAJv1EM

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Re: Via C3 Build Help Needed

Posted on 2018-04-27, 16:10

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My C3 Ezra is an 866 but it clocks up to 1000 mhz without issues. A slower stock clock isn't a problem as long as the core (logically and physically) supports the multipliers you want.

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Re: GA-468VM / RP2 resistor /motherboard repair

Posted on 2018-04-27, 15:55

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A 3.6V NiMH pack from a cordless phone can be used as a direct substitute for the barrel battery. It's also relocatable, so you can place it away from everything sensitive if it ever fails. I'm not averse to lithium cells, but the behavior of lithium batteries under charge is quite different from …

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Re: Voodoo 5 5500 AGP Compatibility Problem

Posted on 2018-04-27, 15:38

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by gdjacobs

in Marvin \ Video

in Marvin \ Video

I would not use Tantalums. I may be misinformed and I'm definitely biased. I have never even ordered one as far as I can remember. They were used on older motherboards but they fell out of use because (so I read) they don't handle ripple very well. - And most if not all of those 10uF are …

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Re: ATI Radeon 9700 Pro Coldboot Bug

Posted on 2018-04-27, 15:35

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by gdjacobs

in Marvin \ Video

in Marvin \ Video

That PSU is a stretch for anything above a basic P3. Also, it's possibly not good for it's rated amps.

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Re: Bought these (retro) hardware today

Posted on 2018-04-26, 14:39

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

oeuvre wrote: Are you gonna try to get rid of that rust? That guy's Wang is really dirty.

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Re: Via C3 Build Help Needed

Posted on 2018-04-26, 03:03

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

C3 CPUs are still cheap on ebay.

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Re: Hard disk woes with DOS 7.1 / Win98SE

Posted on 2018-04-25, 20:43

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by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Win9x with FAT32 support should be good for that sort of size. First, don't use gdisk as that will create a GPT which DOS can't use. For that matter, just in case there's some kind of overlay on the disk, I'd recommend zeroing out the full MBR. dd if=/dev/zero of=/dev/sdX bs=1 count=512 Then create …

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Re: What Stupid Thing Have You Done Recently with Your Retro Gaming Machine?

Posted on 2018-04-25, 20:26

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yesterday, I received a Core 2 Duo E6600 CPU in the mail, so I installed it into my WIP Dell Optiplex 745 re-build, and applied a fresh thing of Arctic Silver 5 thermal paste. ... Just how time-sensitive is thermal paste? :confused: Since you used a good brand, this isn't a problem. Good quality …

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Re: Via C3 Build Help Needed

Posted on 2018-04-25, 20:22

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by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There's only a few freak of nature socket 7 motherboards that can offer this capability, but it is nonetheless a very impressive result. Again, as I said before, in my experience, a C3 can skirt the upper edge of 286 territory (20 and 25 mhz Harris CPUs, for instance) as indicated by Norton SI and …

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Re: Via C3 Build Help Needed

Posted on 2018-04-25, 02:18

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by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Other results indicate the real performance of a 286 is about 10-20% slower than a 386DX of equivalent clock. https://www.vogons.org/download/file.php?id=26613&mode=view With full SETMUL slowdown options in play at 66mhz FSB, my C3 can achieve performance approximating a 386DX-25 as per NSSI. I …

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Re: Via C3 Build Help Needed

Posted on 2018-04-24, 19:09

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

IIRC, yes, by about 5-10%.

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Re: Via C3 Build Help Needed

Posted on 2018-04-24, 14:22

by

by gdjacobs

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

66mhz FSB along with slow memory timings gives 386DX-25 performance. It's conceivable that 50mhz FSB would drop the speed equivalent down to around, say, a Harris 286-20.

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Re: A List of DOS Games with 16-Bit Sound

Posted on 2018-04-24, 14:16

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by gdjacobs

in Marvin \ Sound

in Marvin \ Sound

16-bit mixing, 16-bit output = theoretically lossless (Best) As with the 8 bit -> 8 bit example, this will probably require quantization or higher bit rates to avoid clipping while mixing, so there is potential for the loss of sample information. Digital mixing pipelines run at a higher bit rate ( …

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