Re: The worst motherboards you have had to work with

Posted on 2021-06-01, 17:07

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

EDO support is limited to a few late 486 chipsets, and it's not at all like using PC100 SDRAM on a board that supports PC66 for example. The only difference in that case is the speed, while using EDO on a board that doesn't support it will probably cause it not to POST or to have strange behavior. …

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Re: The worst motherboards you have had to work with

Posted on 2021-05-31, 08:26

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PCChips M747 : major instabilities all the time, until it silently died one day. An incredible annoying experience, I made a thread about it. ASUS A7V8X-X : the VIA chipset drivers would make Windows crash randomly, I don't remember if I managed to resolve it by updating. But the worst thing about …

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Re: CRT - Adjusting Screen/G2 voltage on flyback

Posted on 2021-05-30, 06:57

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by TheMobRules

in Marvin \ Video

in Marvin \ Video

Thanks for the input guys. I set the screen voltage as you mentioned and then found this little utility to run some tests: https://github.com/unclejed613/video-test-bench-dos-freeware Everything seems to be working fine!

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CRT - Adjusting Screen/G2 voltage on flyback

Posted on 2021-05-30, 00:35

by

by TheMobRules

in Marvin \ Video

in Marvin \ Video

Hi guys I've successfully replaced a blown flyback transformer on my old 14in CRT monitor, don't have a lot of experience messing with CRTs but everything went well. My question now is how do I properly adjust the "SCREEN" knob? I have the service manual of the monitor but the adjustment …

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Re: What game are you playing now?

Posted on 2021-05-19, 07:11

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by TheMobRules

in Milliways

in Milliways

Dark Souls A friend is playing this on my recommendation and really enjoying it, so I decided to give it a replay. I originally played and completed it on PS3 (along with Demons Souls and Dark Souls II) a couple times, once as a pyromancer and once as a cleric. I decided to give the remastered …

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Re: Chia cryptocurrency - Mining on HDD and SSD

Posted on 2021-05-16, 00:57

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by TheMobRules

in Milliways

in Milliways

Personally I had to dabble with some of the technical aspects of blockchain/ethereum for work years ago (extremely boring work I may add). But even understanding some of the principles behind it I cannot shake a gut feeling that this is all a big elaborate scam, however irrational it may sound to …

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Re: CompactFlash IDE the EVERYTHING?

Posted on 2021-05-15, 16:41

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I mean it all depends on who you're selling to. Personally I use mechanical hard drives in everything but it seems like all the pootube influencers are pushing solid state Same for me. I'm always annoyed with those videos when they restored something and go "ok, now I'll replace this perfectly …

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Re: AT PSU & AT/ATX adapter

Posted on 2021-05-14, 21:45

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, the connector is fine (black wires together in the middle). The white thing is actually a 20 ohm resistor connected to the 3.3V line of your power supply. It's there to put a small load on that line since AT motherboards do not use 3.3V, and some power supplies may not regulate the output …

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Re: Recommended PSU for loaded P3 Build

Posted on 2021-05-10, 03:53

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That Delta PSU should be more than enough for your needs, those are well built and use good quality parts, such as Japanese capacitors. Besides, their ratings tend to be conservative, which means that if it says 30A on 5V it can probably do a bit more. As mentioned above by Doornkaat , a Pentium 3 + …

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Re: EISA board won't post. EISA-486a REV. 1.1

Posted on 2021-05-07, 07:20

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You know, a few weeks ago I was having similar symptoms on a 486 motherboard. All the chips would get warm except the CPU and there were no signs of life at all. After checking everything I could, I decided to replace the oscillator with another one. No particular reason for doing that except it was …

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Re: EISA board won't post. EISA-486a REV. 1.1

Posted on 2021-05-07, 00:24

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'll set the jumper to 128k and close JP4 with a 33mhz CPU installed and let you guys know, thanks for the ideas so far. If I want to install a 50MHz DX does my oscillator crystal need to be rated 100MHz or 50MHz? Most likely a 50MHz oscillator since the other one is 33MHz. That board doesn't seem …

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Re: EISA board won't post. EISA-486a REV. 1.1

Posted on 2021-05-06, 16:29

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Looks like the motherboard has a 33MHz oscillator and an empty socket for another one. By looking at the jumper settings, it seems that JP4 (near the expansion slots) is used to set the bus speed. I assume it toggles between the two oscillators (the missing one would be a 50MHz part). Currently, it …

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Re: Super expensive Pentium overdrive , any alternative?

Posted on 2021-05-04, 23:50

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

kingcake wrote on 2021-05-04, 23:16: What do I search for to buy one of the adapters on the right? Those are usually called "interposers".

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Re: Super expensive Pentium overdrive , any alternative?

Posted on 2021-05-01, 04:19

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'd say that if the P24T is supported then any other 5V overdrive should work. P24T is the quirkiest Intel Socket 3 CPU in the sense that it needs specific motherboard support, and even certain motherboards that claim to be compatible with it don't work properly due to last minute changes in the …

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Re: What game series did you stop getting and why?

Posted on 2021-04-30, 18:36

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by TheMobRules

in Milliways

in Milliways

Looks like there are many common "abandoned" series here. Doom Eternal : loved the original Doom/Doom 2, loved Doom 3 (yeah, I'm one of those heretics), kind of liked Doom 2016, but that arena-based "combat loop" really put me off, I was expecting them to improve on that for the sequel and better …

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Re: Mystery “Super-286” motherboard from 1994

Posted on 2021-04-28, 18:27

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It's not that surprising considering that many 386SX boards use 286 chipsets (in fact the ability to reuse the 16-bit 286 platform made this CPU very attractive for budget board manufacturers). So you could say that a 386SX is a "Super 286" in some way. Now, trying to pass a 386SX as some kind of …

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MS-4132G, a nice 486 motherboard crippled by an awful BIOS... and a solution!

Posted on 2021-04-25, 22:14

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have this SiS471-based VLB motherboard from MSI, according to the date codes on the components it should be from early/mid 1994: MS4132G.jpg My initial tests revealed a poor performance when compared to other SiS471 boards even when setting the tightest timings for the cache and DRAM. After a bit …

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Re: No cache on SiS471 VLB board

Posted on 2021-04-24, 20:27

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nice! L1 WB may be a bit trickier, since it involves connecting several lines between the CPU and chipset, so that may require more than one jumper depending on how the motherboard was designed. This page is a good resource if you want to figure out the correct jumper(s) for L1 WB in a 5x86 among …

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Re: Microsoft PS/2 to serial pinout?

Posted on 2021-04-24, 17:45

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is the pinout I got by probing an old 68666 adapter a long time ago: PS2_1 <--> N/C [ RD] PS2_2 <--> DB9_2 [ GND] PS2_3 <--> DB9_5 [ RTS] PS2_4 <--> DB9_7 [ DSR] PS2_5 <--> DB9_6 PS2_6 <--> N/C Please note that I tried that same adapter with newer MS mice (from mid-late '90s) and it didn't work …

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Re: No cache on SiS471 VLB board

Posted on 2021-04-23, 15:32

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by TheMobRules

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It may be undocumented, if the board was released before the 5x86 (had this happen to me with a PCChips M921). If you feel like doing some detective work, you can use a multimeter to find a pin in the jumper header area that is connected to the CLKMUL pin of the CPU socket. If you find one, there is …

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