Re: WIP 2: The 6-in-1 Turbo-switched Socket 7 - from XT to 500MHz; dual Tseng powered...

Posted on 2021-02-13, 17:09

by

by j^aws

in Marvin \ System Specs

in Marvin \ System Specs

You should recap the power leap adapter for the cpu, on mine the regulator died and killed the cpu because capacitors are failed Thanks for the heads-up, and sorry to hear your CPU died. These aren't cheap anymore. This is good advice with any old hardware. My soldering skills aren't the best, and …

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Re: WIP 2: The 6-in-1 Turbo-switched Socket 7 - from XT to 500MHz; dual Tseng powered...

Posted on 2021-01-15, 20:29

by

by j^aws

in Marvin \ System Specs

in Marvin \ System Specs

Great project! Just curious... why are you using an interposer for the CPU, if the board supports a core voltage of 2.1V? -Brian Sorry for the late reply - missed this post as I don't frequent this forum often. Thanks for the kind words. The reason I'm using an interposer is that this particular …

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Re: First game with lan support?

Posted on 2021-01-10, 23:40

by

by j^aws

in DOS

in DOS

jmarsh wrote on 2021-01-10, 22:07: Not really local area network games though, are they? LAN vs WAN - MUDs didn't differentiate them. Nor does it really make sense to even try to differentiate them. They commonly used dialup modems for home users, but these games originated in academia with local …

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Re: First game with lan support?

Posted on 2021-01-10, 21:06

by

by j^aws

in DOS

in DOS

Multiplayer online games predate the original IBM PC. These games were text-based MUDs (Multi-User Dungeons) that originated in the 70s, and the first one on XT I can find is Scepter of Goth, circa 1983: https://dwheeler.com/scepter-of-goth/scepter-of-goth.html

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Re: 440BX AGP experts, let's settle this once and for all.

Posted on 2020-12-30, 21:42

by

by j^aws

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

FYI, a 7 year old thread with my 6800GT running at AGP 2x on a 440BX: Re: Would this mod to this Geforce 6800 from AGP 1.5v to 3.3v kill it? Newer than 6 series involved messing with AGP GART drivers, of which there are various. This is something I didn't document when I tested a 7 series at AGP 2x …

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Re: Orpheus Soundcard: a new DOS soundcard with SPDIF/OPL3/MPU support

Posted on 2020-10-10, 18:44

by

by j^aws

in Marvin \ Sound

in Marvin \ Sound

Great to see the project near the finishing line! Great work from all involved. BTW, did you manage to test the above games from our earlier discussion? Any updates would be great. Many thanks. thanks for the kind words! everything EXCEPT Duke Nukem 2 is OK: nukem2 only works with adlib sfx , ADPCM …

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Re: VR look back

Posted on 2020-10-10, 18:31

by

by j^aws

in Milliways

in Milliways

robertmo wrote on 2020-10-07, 05:32: In real life you only need to slightly turn your head to look back. In goggles you need to turn back almost completely. Really annoying. Low FOV from headsets doesn't help compared to reality, but should get better with newer tech.

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Re: Orpheus Soundcard: a new DOS soundcard with SPDIF/OPL3/MPU support

Posted on 2020-10-10, 18:26

by

by j^aws

in Marvin \ Sound

in Marvin \ Sound

... but remember, not all sfx are playing... door destruction ones are mute so not all ADPCM formats are supported What other game(s) use this format so we can test also? thanks for the kind words guys! Duke Nukem 2 is a common test game. There maybe other Apogee Software games from the same era …

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Re: discuss: comparision of yamaha and roland midi synthesizers product line

Posted on 2020-05-28, 12:43

by

by j^aws

in Marvin \ Sound

in Marvin \ Sound

TG77 can do things the FS1R can't and vice-versa. Besides the 6 FM ops vs 8 FM ops, the TG77 can modulate AWM with its Advanced FM synthesis as well as import samples (RAM cards) and use AFM, whilst the FS1R can do Formant synthesis which sounds like freaky vocoder stuff. Yamaha OPL4 should've been …

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Re: Pentium socket 5 anyone had attempted to run at 1x multiplier?

Posted on 2020-04-15, 00:07

by

by j^aws

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

^^ 16 MHz was an undocumented FSB setting on the board, and before de-turbo was applied. I distinctly remember the 16 MHz number, and this was found by starting at 66 MHz FSB, then downclocking the FSB incrementally using the boards dipswitches - 66, 50, 40, 33, 25, 16. Then the fan was disconnected …

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Re: Pentium socket 5 anyone had attempted to run at 1x multiplier?

Posted on 2020-04-14, 23:25

by

by j^aws

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

^^ What are you using to read the TSC? I usually use multiple tools to determine speed. Also, is your POD the same as my POD200MMX? There maybe variations. By reading TSC counter using the software I've written. Basically you record number of CPU ticks at two intervals and compare with actual time …

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Re: Pentium socket 5 anyone had attempted to run at 1x multiplier?

Posted on 2020-04-14, 23:04

by

by j^aws

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

^^ What are you using to read the TSC? I usually use multiple tools to determine speed. Also, is your POD the same as my POD200MMX? There maybe variations.

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Re: Pentium socket 5 anyone had attempted to run at 1x multiplier?

Posted on 2020-04-14, 21:56

by

by j^aws

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I know this is working on PODP83 Are you sure this works on S4/S5 overdrives? Last time I checked removing the fan was not changing mutliplier but applying a different sort of throttling. At least when measuring frequency by TSC There seem to be a myriad of 'overdrives' out there. I've tested two …

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Re: Pentium socket 5 anyone had attempted to run at 1x multiplier?

Posted on 2020-04-14, 21:43

by

by j^aws

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That's common to all the POD CPUs, I pulled the same trick on my PODP83 to get it running at 1x whatever I set the board at (16MHz was lowest iirc, but that was with 32b 486 bus) Nice thing about this Socket 5 setup and POD200MMX was that it also ran stable at 3x multiplier and 80 MHz FSB, meaning …

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Re: Pentium socket 5 anyone had attempted to run at 1x multiplier?

Posted on 2020-04-14, 21:16

by

by j^aws

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Subject says all? Just wondering. Cheers, Yeah, I was testing this several years ago. I managed to get a POD200MMX running at 1× multiplier and 16 MHz FSB on a Socket 5 board with working Turbo switch. Some discussion in the Setmul thread: https://www.vogons.org/viewtopic.php?p=550840#p550840 …

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Re: Is there any way to add reverb & chorus to the OPL synth of a SB Pro / SB16 soundcard?

Posted on 2020-03-29, 19:02

by

by j^aws

in Marvin \ Sound

in Marvin \ Sound

Would something like this suffice? https://www.thomann.de/gb/tc_electronic_m100.htm I'm a bit out of my depth here, so I'd be happy for more/better suggestions. Yeah, that would more than suffice. It's beyond the tech used in your initial query in something like an AWE32. TC Electronics are well …

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Re: OPL3-compatibles

Posted on 2020-03-26, 23:39

by

by j^aws

in Marvin \ Sound

in Marvin \ Sound

Most OPL alternative sound cards have issues with 2/3 bit ADPCM. Regarding OPL, ESFM has issues with one of the tracks in Tyrion 2000. Dune is a good litmus test for OPL as well. Crystal FM can sound a bit thin at times. There are other clones that I haven't tested much of yet, and there's the …

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Re: Is there any way to add reverb & chorus to the OPL synth of a SB Pro / SB16 soundcard?

Posted on 2020-03-26, 23:22

by

by j^aws

in Marvin \ Sound

in Marvin \ Sound

Would I gain reverb & chorus options for the OPL synth of a SB Pro / SB16 soundcard, when adding either a Creative Waveblaster II (CT1910) or a Creative AWE32 upgrade card (CT1920)? You need to feed the line outs from your OPL sources into external DSPs for effects processing such as chorus, reverb …

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Re: Alien Trilogy - what's yer take?

Posted on 2020-03-26, 23:09

by

by j^aws

in Milliways

in Milliways

Another one of these dos games I've never played and won't be anytime soon judging from the prices shown on ebay. Wonder why GOG hasn't picked it up yet? Is it hard to get going on a "proper system"? Seems like it would be a prime candidate for a mod too. Don't know what happened to its price ‐ …

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Re: Rack recommendations for Midi devices etc.?

Posted on 2020-03-16, 22:24

by

by j^aws

in Marvin \ Sound

in Marvin \ Sound

Ah I see... and do you know, how I can manage to mount my SC-55 etc. on tha wall mount? Is there some special sort of mounting stuff? There are many types of rack cases/ enclosures. They all have standardised widths. They can be mounted on walls, desks and left on the floor. Look for 'audio racks'. …

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