Re: Help with 486 motherboard RTC

Posted on 2017-03-24, 17:23

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So, an update on this issue: Turns out my hacked together 3V external CR2032 battery was the culprit. I guess the 3V wasn't enough to keep everything working when the computer was turned off, and it really needed 3.6V like the internal battery used to supply. I soldered on a new Ebay-bought 3.6V Ni- …

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

Posted on 2017-03-16, 10:15

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Took photos of AAAAALLL my graphics cards in preparation for putting them on AmiBay... Started with some bundles, more to come... Feel free to show us your pics here as well :) Well, it's actually not ALL of my cards, but the ones I'm planning to sell. Mostly bog standard stuff. https://m.imgur.com …

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

Posted on 2017-03-15, 23:29

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Took photos of AAAAALLL my graphics cards in preparation for putting them on AmiBay... Started with some bundles, more to come...

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Re: Pentium PC won't boot with IDE-FC Adapter..

Posted on 2017-03-11, 21:28

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

According to my little booklet, for the Award bios the codes mean this: 1 long - 2 short = Video Error. Cannot initialize Screen to Display Any information [sic] 1 long - 1 short = RAM or motherboard error. For a Phoenix bios: 1 - 2 - 1 - 1 = Initialize Power Management Very helpful, I'm sure. Don't …

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Re: Bought these (retro) hardware today

Posted on 2017-03-04, 12:46

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My local second hand store had a motherload of semi-old computer stuff today. The golden nuggets ( at least for me ) were: - Sound Blaster AWE32 CT2760 - ASUS CUSL2 Socket 370 motherboard - STB Velocity 4400 AGP The mildly interesting: - 2x Matrox Millenium G200 - ATi Rage 128 Pro - Diamond Viper II …

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Re: Help with 486 motherboard RTC

Posted on 2017-03-03, 17:16

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My board is a different revision and that jumper is in a different place. You can see it just below and to the right of the keyboard connector. The image is old, from before I mounted the external battery. I have the jumper open in reality, and the board saves the settings just fine, so the external …

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Re: Help with 486 motherboard RTC

Posted on 2017-03-03, 16:44

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good call. I've ordered some from Ebay. 😀

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Help with 486 motherboard RTC

Posted on 2017-03-03, 15:34

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a nice 486 motherboard I'm using, a Chicony CH-486-33/50P of some revision, and it works great except for one thing: The clock does not seem to be functional. I'm using an external battery and it saves BIOS info and the set time/date just fine, but the time won't advance when the computer is …

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Re: Help with motherboard - Abit PR5 R2

Posted on 2017-03-03, 11:14

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for the tip! It sounds like more bother than it's worth frankly. :) According to the docs, the reset led on my diagnostics card is only supposed to light up when reset is pressed, not all the time. So that's OK. And I've tried the mobo with graphics card and different RAM sticks, without …

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Re: Help with motherboard - Abit PR5 R2

Posted on 2017-03-03, 09:48

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks again gerwin! That manual must be for a different revision of R2 for some of the jumpers they mention does not even exist on my board, and I have jumpers they don't even mention... :( The dip switches for the CPU settings seem "similar", except that the settings I used for Intel 133 MHz are …

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Re: Help with motherboard - Abit PR5 R2

Posted on 2017-03-02, 22:39

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

While I do know how to rudimentarily use a multimeter, I unfortunately have no idea where to start when it comes to probing old motherboards. (And I don't expect you to teach me on a forum :D ) I've tried several different CPUs, and am "fairly" sure I've set them up correctly. Thanks for your time, …

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Re: Help with motherboard - Abit PR5 R2

Posted on 2017-03-02, 17:38

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

They look fine to me. Would incompatible RAM make it not turn on at all? I can feel the CPU getting hot, but my ISA/PCI diagnostics card show no error codes at all. Filename IMG_1900.JPG File size 432.99 KiB Views 743 views Filename IMG_1899.JPG File size 474.67 KiB Views 743 views

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Re: Help with motherboard - Abit PR5 R2

Posted on 2017-03-02, 15:55

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for the tips, gerwin. I'll check it out. Electronic components is not my forte, what does the voltage step down chips look like?

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Re: Help with motherboard - Abit PR5 R2

Posted on 2017-03-02, 15:43

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Unfortunately it seems like this board is deader than a dodo. 🙁 I've now tried it with a bog standard Pentium 133 MHz CPU and it still refuses to show any signs of life. No POST, not a single beep, no nothing. How annoying. 🙁

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Re: PSU - bust the myth

Posted on 2017-03-02, 15:35

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by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

König certainly has some quality control of the items they rebrand. I doubt anything is counterfeit, it is just cheap budget stuff.

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Re: PSU - bust the myth

Posted on 2017-03-01, 18:49

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Konig usually rebrands generic cheap Chinese stuff, but I don't know anything about these PSUs specifically.

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Re: No sound via DOSBox with Roland MT-100

Posted on 2017-02-27, 16:46

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by c0keb0ttle

in MT-32 General

in MT-32 General

Sounds about right. Are you sure you connected the cables properly? The important one is connecting the OUT from the USB interface to the IN on the MT-100. Don't bother with the other one unless you plan to create music yourself. Are you sure the USB interface is functional?

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Re: Bought these (retro) hardware today

Posted on 2017-02-23, 12:41

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bough this "new old stock" AT case for €40 incl shipping. It's more of a Pentium case than 486 case, and has no MHz display, but still... It's so clean and shiny! Filename IMG_1888.JPG File size 251.02 KiB Views 2306 views Filename IMG_1886.JPG File size 101.89 KiB Views 2306 views Filename IMG_ …

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Re: Help with motherboard - Abit PR5 R2

Posted on 2017-02-21, 18:24

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, so far so bad: Filename IMG_1883.JPG File size 260.47 KiB Views 2338 views No beeps, no error codes. The CPU and memory works fine with my ASUS board. Might be a dead motherboard. 🙁

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Re: Help with motherboard - Abit PR5 R2

Posted on 2017-02-21, 16:50

by

by c0keb0ttle

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Unfortunately, finding the manual seems to be more difficult... But at least I know the board is supposed to support my CPU.

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