Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-20, 20:52

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I use a POST CARD (see photo), but there are various models, the cost varies from a little (€) to higher figures, even if it is quite similar (or the same, there are professional ones but they cost a lot), the one that I bought it years ago it is very cheap. It is mainly used to display the Bios …

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Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-20, 05:31

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Don't want to hijack the thread, but would just like to say thanks for the power connector pinouts provided here. Just helped me immensely to resurrect my PCS-11, it's original PSU failed today - couldn't get it to start back up again like I did at the weekend. Soon I'm going to replace the PSU …

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Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-19, 20:57

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I finished testing the circuit and this is the schematic. I would say it works without problems. tomorrow if the heat permits I will do the version on a base (welding with 34 degrees centigrade is torture). I was wrong to mark the two pins on the previous connection diagram and I corrected it in …

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Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-19, 20:53

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I finished testing the circuit and this is the schematic. I would say it works without problems. tomorrow if the heat permits I will do the version on a base (welding with 34 degrees centigrade is torture). I was wrong to mark the two pins on the previous connection diagram and I corrected it in …

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Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-19, 20:29

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I finished testing the circuit and this is the schematic. I would say it works without problems. tomorrow if the heat permits I will do the version on a base (welding with 34 degrees centigrade is torture). I was wrong to mark the two pins on the previous connection diagram and I corrected it in any …

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Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-19, 14:32

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My PCS-11 has started, the ATX power supply connection circuit (or pico PSU in may case ) is correct except for the brown wire which is the reset that comes from the original power supply, inserting the test board in fact without that wire connected the resetis off , insert a resistance in series ( …

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Re: Ratty build for self amusement, Dustin the DOStin....

Posted on 2021-07-18, 17:29

by

by dataino.it

in Marvin \ System Specs

in Marvin \ System Specs

This psu is 65*75*140 (65W) 5V - 10A

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Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-18, 15:55

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am very curious about these Pico ATX supplies, it seems like my Dustin the DOStin build could use one ( https://www.vogons.org/viewtopic.php?f=25&t=82387 ) but specs I see on eBay have them at about 8A on 5V and 8A on 3.3 which I think might be a bit low for an s370 build, but is probably fine …

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Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-18, 14:56

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My PCS-11 has started, the ATX power supply connection circuit (or pico PSU in may case ) is correct except for the brown wire which is the reset that comes from the original power supply, inserting the test board in fact without that wire connected the resetis off , insert a resistance in series ( …

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Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-16, 19:37

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If it doesn't work you can replace the power supply with this one, I normally use it with 286,386 ,486 and same pentium motherboards Obviously with a suitable power supply, I will shortly do it on my pcs11 and let you know

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Re: Olivetti PCS33 (386 SX)/M-300 - Repairing

Posted on 2021-07-16, 19:29

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh I've successfully booted my PCS 11 with an ATX PSU before with the pinout I described above. As my ATX PSU was newer than the ATX 1.x specifications it didn't have a -5v rail, so I left that out (P22). I did this months ago mind you. I knocked up an adapter using a filed down du-pont connector …

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Re: Why DOS died...

Posted on 2021-07-16, 18:24

by

by dataino.it

in Milliways

in Milliways

Yesterday on a windows 2016 server a file had a space at the end of the name, windows could not delete or rename it and could not delete the folder, DOS command "RMDIR [dir] / s" delete it. Obviously a young technician lost 1 hour looking for a software that could delete or rename the file, I opened …

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Re: Best Linux or Windows OS for a Pentium III??

Posted on 2021-07-11, 16:34

by

by dataino.it

in Marvin \ Software

in Marvin \ Software

Using web.archive.org https://web.archive.org/web/20051201000000*/h … /puppylinux.org i find this "Puppy will boot off a minimum PC with 586 CPU and 32M RAM." https://web.archive.org/web/20050401030717/ht … ware.com/puppy/

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Re: Best Linux or Windows OS for a Pentium III??

Posted on 2021-07-07, 22:23

by

by dataino.it

in Marvin \ Software

in Marvin \ Software

Reading a old post (2011 https://www.hwupgrade.it/forum/showthread.php?t=2353055 ) the solutios is one of this distro SliTaz ZenWalk antiX Puppy Linux Macpup VectorLinux Obviously not the latest version. But you have to test them

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

Posted on 2021-06-28, 19:46

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got an untested Legend QDI Socket 370 motherboard P6V693A/A9 without, I believe, north bridge heatsink. I've installed an Intel Celeron 400 MHZ CPU and turns out she works fine. However, I only tested it in DOS. I hope I will find appropriate drivers when Windows 98 installation comes in order. Hi …

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Re: Bought these (retro) hardware today

Posted on 2021-06-25, 17:44

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

SteveC wrote on 2021-06-25, 09:56: I'm on an IBM PS/2 buying spree - seller's photo 😀 It doesn't work but hey that's half the fun eh? Beautiful, complete with everything, no more than 300 euros

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Re: Bought these (retro) hardware today

Posted on 2021-06-23, 15:52

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The latest arrival .. ASEM DESK 3021 Onboard EGA + serial + printer

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Re: Dead Asus P3C-E?

Posted on 2021-06-23, 12:58

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Do you have the tools to check for the presence of clocks on the oscillators?

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Re: Checking unexpected interrupt and stuck NMI - Failed - ASEM THOR 8050 - Restoration ....

Posted on 2021-06-22, 18:43

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PSU ready for recap

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Re: Checking unexpected interrupt and stuck NMI - Failed

Posted on 2021-06-22, 18:42

by

by dataino.it

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Doornkaat wrote on 2021-06-22, 10:47: That PC looks seriously awesome! It is fantastic apart from the frightening weight, it has a particular design with the power supply in view and the connections at the top .. When I saw him in the picture in the midst of various computer junk it took me a while …

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