Re: Huge delta fans on a fan controller

Posted on 2021-01-28, 19:14

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There's always the option of using 120mm muffin fans that run on 120VAC power. I use those in quite a few systems at work. Some of them have metal serrated blades which could chop off a finger. We have rheostats (like a house lighting dimmer switch) hooked up to them to control fan speed. Noise …

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Re: The comprehensive list of all modern reproductions of vintage sound cards

Posted on 2021-01-28, 19:12

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by Sphere478

in Marvin \ Sound

in Marvin \ Sound

did anything ever come of the bitchin fast audio 3000? I wish. There's nothing new on his blog, and no mentions on the VCFed forums. If you watch the video, eeguru honestly gets ahead of himself with all of the things the card could do, just because there's space in the FPGA, as opposed to what the …

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Re: Fun with bootable rom chips.

Posted on 2021-01-28, 19:09

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh that’s cool. Can I install galaga? hahah

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Re: Definitive list of all socket 5/7/SS7 cpus

Posted on 2021-01-28, 18:59

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Baoran wrote on 2021-01-28, 18:51: There are 400Mhz 450Mhz and 500Mhz version of K6-III+ There is no 550Mhz version. That is just overclocking if you run one at 550Mhz Lol. I own one. Yes there is haha Adding those

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Re: Definitive list of all socket 5/7/SS7 cpus

Posted on 2021-01-28, 18:00

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

rmay635703 wrote on 2021-01-28, 17:41: Cyberdyne wrote on 2021-01-28, 07:26: PS. Never seen any info on a Pentium 50, if it existed, then only some internal Socket 4 engineering sample that nobody has in the wild. A80500-50 Q0399 engineering sample only How should it appear on list?

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Re: Fun with bootable rom chips.

Posted on 2021-01-28, 12:40

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

And XTIDE universal IDE BIOS for using large drives in old computers. And you can even put a minimalist DOS in rom, but there are many limitations in the open source implementation. I have not get into commercial ROM-DOS. How does the hard drive thing work? Does it sense the hard drives on the …

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Re: Huge delta fans on a fan controller

Posted on 2021-01-28, 12:30

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PSU manufacturers don't want you to know this but there's actually a 7V rail on your standard 4pin 5.25"-drive connectors. Measure for yourself, there's a ~7V difference between the outer wires. Just keep in mind that even at 7V the fan is still drawing ~2.33A/16.33W. 😉 It’s a clever trick. Indeed, …

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Fun with bootable rom chips.

Posted on 2021-01-28, 12:18

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So I just discovered these were a thing. And that you can put plop boot manager on them. Awesomeness, what else can You do with them? They work in basically any isa computer right? Can clover work on them? Or is it too big?

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Re: Definitive list of all socket 5/7/SS7 cpus

Posted on 2021-01-28, 12:09

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Pentium 60 and 66 are all socket 4. First socket 5 cpus were 75 and 90. PS. Never seen any info on a Pentium 50, if it existed, then only some internal Socket 4 engineering sample that nobody has in the wild. I'll have to check. I swear my friend has a socket 7 60 I'll remove the 50 Nope. What he …

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adding plop bootloader to bios rom

Posted on 2021-01-28, 10:49

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

any of you guys good with editing bios roms? was wondering if someone could modify jan's iwill p55xb2 bios to have an option for plop boot loader it's a little above my head to be honest :( http://rom.by/blog/Dobavlenie_v_staryy_BIOS_zagruzki_s_USB_s_pomoshchyu_Plop http://web.inter.nl.net/hcc/J. …

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Re: Definitive list of all socket 5/7/SS7 cpus

Posted on 2021-01-28, 09:18

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Cyberdyne wrote on 2021-01-28, 07:26: Pentium 60 and 66 are all socket 4. First socket 5 cpus were 75 and 90. PS. Never seen any info on a Pentium 50, if it existed, then only some internal Socket 4 engineering sample that nobody has in the wild. I'll have to check. I swear my friend has a socket 7 …

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Re: Can anyone here design a usb isa card?

Posted on 2021-01-28, 08:27

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There are PCI cards that combine USB and IDE/SATA controllers on a single card. They probably still won't allow you to boot off of their USB ports but if the point is conserving slots on your mobo this may be an alternative solution until you find someone willing to create an ISA USB adapter. A …

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Re: The comprehensive list of all modern reproductions of vintage sound cards

Posted on 2021-01-28, 06:42

by

by Sphere478

in Marvin \ Sound

in Marvin \ Sound

did anything ever come of the bitchin fast audio 3000?

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Re: Huge delta fans on a fan controller

Posted on 2021-01-28, 06:08

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

adalbert wrote on 2021-01-28, 01:39: PWM control should allow fan startup at lower speeds than usual, because in theory you are not reducing the voltage, but you are reducing the duty cycle. Recommendation of a bracket like this one that has that?

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Re: FMonster, the monster of sound synth

Posted on 2021-01-28, 02:41

by

by Sphere478

in Marvin \ Sound

in Marvin \ Sound

Any progress on the FMonster? Been thinking about this: pairing a dual OPL2 block that can be configured with 388/9h for left OPL2 and 38A/Bh for right OPL2 and a Pro Audio Spectrum 16 card could be a poor man's PAS compatible setup. This would require to mute the OPL3 on the PAS 16 mixer, or to …

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Definitive list of all socket 5/7/SS7 cpus

Posted on 2021-01-28, 02:05

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Help me add to this list till it’s completed guys! Anything that physically will fit in socket 5/7/SS7 counts! All the variants, all the rare ones, all unreleased engineering samples. If it fits it goes in the list! Let me know if there are any errors Intel: Mhz fsb/core Notes Pentium 75mhz 50/75 …

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Re: Can anyone here design a usb isa card?

Posted on 2021-01-28, 00:37

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

if speed isn't a problem (since you want this for ISA) why not using a USB hub to multiply the USB ports ? I was waiting for someone to say this. lol very valid point they are usb 1.x ports back in the day when using them they were great for keyboard and mouse but windows complained about them a …

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Re: Huge delta fans on a fan controller

Posted on 2021-01-28, 00:23

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Those fans have an operating voltage range of 8 - 13.2 V, according to the spec sheet. They probably won't even start up at 5 V, perhaps at 7 V. They will be unbearably loud even at that speed, take it from someone who used to run an 80 mm Vantec Tornado at 7 V back in the day. Unless you have …

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Re: Can anyone here design a usb isa card?

Posted on 2021-01-27, 20:55

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

if speed isn't a problem (since you want this for ISA) why not using a USB hub to multiply the USB ports ? I was waiting for someone to say this. lol very valid point they are usb 1.x ports back in the day when using them they were great for keyboard and mouse but windows complained about them a …

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Re: Huge delta fans on a fan controller

Posted on 2021-01-27, 15:00

by

by Sphere478

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Maybe you could use external PWM controller like this one https://www.ebay.com/itm/PWM-DC-5V-16V-10A-DC-Motor-Speed-Controlling-Switch-LED-Dimmer-Controller-1pc/174294362400?hash=item2894c0e920:g:bl8AAOSw2uhey3GO it just would need to be wired manually. The controller you linked earlier probably …

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