Re: Bought these (retro) hardware today

Posted on 2018-09-30, 16:57

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

jesolo wrote: I have about 3 or 4 of these boards. Despite different branding, they are all Juko ST clones. I have the original manual for one of these (branded as "Unique") and you can download it from here: http://www.minuszerodegrees.net/manuals.htm#Unique Thanks for the link to the manaul! 😀

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Re: picked up a cheap faulty 486 vlb motherboard today

Posted on 2018-09-30, 13:39

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I doubt that C20, C21, C32 or C33 has anything to do with the issue unless shorted and perhaps you can measure R49 and R59 in circuit? Perhaps you can post an image showing the full board (it seems to have vanished as I could swear I saw one before) so we can see where the trace going through R49 …

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Re: picked up a cheap faulty 486 vlb motherboard today

Posted on 2018-09-30, 13:03

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If I had to guess I would be inclined to think that the "shady looking" resistors and caps have nothing to do with the issue. I wouldn't really expect this kind of result with the shady componets location on the board in mind. If cleaning the board thoroughly isn't enough I would try to remove the …

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Re: Bought these (retro) hardware today

Posted on 2018-09-29, 13:14

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

JUKO ST - 12 XT clone motherboard. I dont know if it's an 8088 or NEC V20 CPU on the board as there is a sticker covering it. It was listed as a broken 286 motherboard so the price was fair, £14.89 with cheap shipping. The board isn't the exact same revison but near enough... https://stason.org/ …

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Re: What retro activity did you get up to today?

Posted on 2018-09-19, 18:29

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by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I found this handy instruction telling us what we shouldn't do with a CRT monitor. Filename Do not.jpg File size 300.96 KiB Views 946 views

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Re: Luckybob goes on a tirade...

Posted on 2018-09-17, 19:18

by

by Skyscraper

in Milliways

in Milliways

I love a good rant! #last night in Sweden Here in my neighborhood the cars be burning! 5 cars parked less than 10 meters from my car got torched a couple of months ago with fuel tanks exploding and so on. My car still reeks of smoke but luckily it diddn't catch fire eventhough it was covered in soot …

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Re: What retro activity did you get up to today?

Posted on 2018-09-16, 19:22

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

luckybob wrote: well, I own a very similar monitor, so if you would be kind enough to post the details of that cable, I'd love to try it out on my monitor. I will poke around with the multimeter tomorrow to see exactly how the pinout ended up! 😀 Should I forget just remind me.

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Re: What retro activity did you get up to today?

Posted on 2018-09-16, 19:11

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

To be able to test this a professional CGA/EGA 9pin to "EGA/CGA 15pin" cable is needed. https://i.kym-cdn.com/photos/images/original/000/897/221/ad1.gif DUDE. Explain this sorcery. Well the secret sauce is just having a a monitor that recognizes all types of signals and scanning frequencies. I …

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Re: What retro activity did you get up to today?

Posted on 2018-09-16, 12:17

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm testing some old computers with CGA and EGA cards. The issue is that I do not have any monitor that support the digital TTL signal, or so I thought. I own a NEC LCD1990FXp TFT screen that is known to suppoort most analog signals but the manual dosn't mention EGA, CGA or TTL at all. The former …

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Re: What motherboard for Pentium II Overdrive 333MHz ?

Posted on 2018-09-15, 10:23

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by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I think the Intel PR440FX should be a safe bet. It will also let you overclock the CPUs to 5x70 = 350 MHz. I did get my Intel pr440fx motherboard, instead flashing the bios on the other one. However I do not understand the ISA, PCI layout on this motherboard. Seems I cannot use the bottom PCI slot, …

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Re: eBay buyer protection??

Posted on 2018-09-11, 20:16

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by Skyscraper

in Milliways

in Milliways

It's pretty well known that eBay pretty much ALWAYS sides with the buyer. This sounds very unusual. Well it is very possible OP isn't giving us the full story here either. No. I've told as it is without giving any personal or item details. I've done some reading of eBay.de policies and it is …

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Re: CPU Jumper Settings help For Motherboard

Posted on 2018-08-25, 19:14

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

A Pentium MMX has the P55C core, use the setting for P55C.

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Re: Windows 95 is 23 years old

Posted on 2018-08-25, 16:52

by

by Skyscraper

in Milliways

in Milliways

The never-ending story! https://www.youtube.com/watch?v=WdoznE72jGg

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Re: What retro activity did you get up to today?

Posted on 2018-08-22, 17:02

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Here is the rest of yesterdays post that I diddn't have time to complete before going to bed. The ball bearings mounted on the push pins! Buying new shorther push pins costing 4 cents each would have been too easy. Well they are rather small ball bearings.jpg The board looks great with the heat pipe …

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Re: What retro activity did you get up to today?

Posted on 2018-08-21, 20:55

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Another post from me with borderline retro stuff. Earlier I posted a picture in the "bought stuff" thread showing a Gigabyte 965P-DQ6 that had gotten beat up in shipping because of shoddy packaging (to put it mildly). A capacitor had gotten torn off and the heat pipe cooling was bent and skewed in …

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Re: Pentium Pro in Pentium II motherboard?

Posted on 2018-08-18, 20:06

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by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

mrau wrote: that drop after 256kb :> the edge of the world; why does it show 3 cache levels? wouldnt ppro improve in a p2 board due to faster memory? Speedsys is often mistaken about such things. I guess that small speed drop after 128KB was enough to fool its cache detection algorithm

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Re: Help Needed: Can I Save This M919?

Posted on 2018-08-18, 18:14

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just found that a resistor blew and replaced it. Motherboard works great now other than I'm getting noise through my Aztech card whenever it attempts to do a DMA for digital samples. Not sure if it's the card or board. I have a few motherboards that outputs garbage when the sound card tries to use …

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Re: Pentium Pro in Pentium II motherboard?

Posted on 2018-08-18, 17:37

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

a Pentium Pro with SD-RAM and AGP videocard Not possible, they are usually compatible only with 440FX chipset boards. The full speed cache is nice, but any 300Mhz+ PII will likely beat it in most gaming benchmarks. Even Mendocino will run circles around it, so it's entirely pointless adapter for …

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Re: Bought these (retro) hardware today

Posted on 2018-08-13, 19:07

by

by Skyscraper

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm having a bad time when it comes to Ebay lately. Half of the stuff I have bought this summer have been badly packaged and/or with serious faults not described in the auction text. I can't make return cases out of everything that should be return cases as I soon would get black listed eventhough …

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Re: What modern activity did you get up to today?

Posted on 2018-08-12, 19:39

by

by Skyscraper

in Milliways

in Milliways

I'm messing with an Asus P5Q Deluxe P45 Socket 775 motherboard bundle I picked up yesterday. It came with 8GB DDR2 memory, a low end CPU cooler and a quad core CPU, the seller diddn't know the exact model. The CPU turned out to be a Q9450 which is both nice and and not so nice. Nice because it's an …

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