ATX to AT power adapter won't plug in

Posted on 2020-10-11, 19:10

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I got an ATX to AT power adapter cable, but there are nubs on the AT plugs that prevent it from plugging in to my XT class mobo. Why is this? I have never seen a post about this so I don't know what to think. Are there different versions of the AT connector and mine is not correct? Can I just cut …

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Re: Every PC XT power supply busted?

Posted on 2020-10-01, 23:26

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Do you have a load on the PSUs? I think those XT PSUs require some kind of load to function. If not that then they may be turning off due to another fault on your MB, which is better than destroying the board. It turns out both the floppies and the hard disk needed to be connected for the power …

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Every PC XT power supply busted?

Posted on 2020-10-01, 07:26

by

by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I got two different XTs saying that they were tested to power on, but otherwise untested and I got an extra power supply that said it was tested. I tried all three. One of them just buzzes and the other two briefly click and the fans spins for a second and does nothing. So did I just get triple …

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Where can I find a PC XT case/equivalent or broken system?

Posted on 2020-09-15, 20:19

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am building a IBM PC system using new components and so I'm looking for a IBM PC XT case or one that is broken, but with a good condition case. Maybe there is a remake case somewhere? I don't see a subforum for bartering, but maybe someone here has something like this? I know ebay is obvious, but …

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Re: How to make NEC V20HL run at 16 MHz?

Posted on 2020-09-10, 00:08

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In the 1987 NEC microcomputer products catalog they list a uPD71011 clock generator for use with V20/V30 CPUs. However it outputs a clock with 50% duty cycle. Looking at the timing specs for the V20 itself, the allowed range for the clock duty cycle is 41% to 51% which is different than an 8088! …

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Re: How to make NEC V20HL run at 16 MHz?

Posted on 2020-09-08, 18:01

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

does anyone make this kind of cards? I assume you mean the pc sprint, not the SBC. https://ctrl-alt-rees.com/downloads/ibmpc/PC-SPRINT.zip https://ctrl-alt-rees.com/2020-03-02-overclocking-the-ibm-5150-8088-cpu-with-pc-sprint.html If not, that sergey board can be purchased on ebay much cheaper than …

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Re: How to make NEC V20HL run at 16 MHz?

Posted on 2020-09-08, 17:54

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Anonymous Coward wrote on 2020-09-08, 15:04: 82C84A is good for up to 25MHz. https://www.renesas.com/us/en/www/doc/datasheet/82c84a.pdf It's the CMOS version of 8284. I saw that, but I thought that was the crystal frequency, NOT the output clock frequency which would be / 3. So am I wrong? is that …

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How to make NEC V20HL run at 16 MHz?

Posted on 2020-09-08, 14:53

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So I am going to begin building an 8088 clone system - Sergey Kiselev's design. http://www.malinov.com/Home/sergeys-projects/xi-8088 My goal is to get the CPU running at its specified speed of 16 MHz - so technically not an overclock for the CPU itself. The supporting clock generator chip (8284A) is …

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Re: CUV4X-E PIII mobo won't boot anything?

Posted on 2020-03-05, 19:55

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

YES! I figured it out!!!!!!!!!!!!!!!! Chip Configuration -> CPU-DRAM back to back transaction -> Disabled Works great so far now. Was able to get the OS to launch. I will actually try installing it at a later time though.

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Re: CUV4X-E PIII mobo won't boot anything?

Posted on 2020-03-05, 17:44

by

by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Alright, I underclocked the CPU and it worked. No, it was not overclocked. Now I just have to figure out if it's the CPU or the mobo just doesn't want to go full speed for some reason. I am using a 1.4GHz PIII and maybe this board just isn't going to work with it. I thought it would though cause the …

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Re: CUV4X-E PIII mobo won't boot anything?

Posted on 2020-03-05, 16:45

by

by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I tried Bart PE and Hiren's BootCD. They all do more or less the same thing.

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CUV4X-E PIII mobo won't boot anything?

Posted on 2020-03-05, 16:33

by

by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I got an ASUS CUV4X-E mobo on ebay. The seller said the mobo was tested, but I am having doubts that the seller tested anything except the BIOS. What happens when I try to boot any OS is the CD will spin up and say the generic message like "system is inspecting hardware..." and then the screen goes …

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Where can I find cap checked PSUs?

Posted on 2020-02-26, 00:23

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I am having a problem finding a decent PSU for my PIII system. It needs a 20-pin connector and a bunch of molex. The problem with ebay is that nobody checks the caps and I've ordered multiple PSUs (even new ones) that had bulging and leaking caps. Maybe someone on here sells PSUs or knows someone …

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Re: Best option for IDE flash memory - PIII system

Posted on 2020-02-24, 19:26

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by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

You're looking for best performance and reliability so the answer is straight forward, a modern small capacity SDD + adapter. It was not immediately clear to me because I don't know if those adapters have a bottleneck. Will they essentially operate as fast as the IDE bus allows or are they like the …

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Best option for IDE flash memory - PIII system

Posted on 2020-02-24, 16:31

by

by Synaps3

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, I've got a Pentium III system that I am working on. It's got an UltraDMA100 IDE controller. For performance and reliability, what is your opinion on the best storage medium that is not a traditional hard drive? IDE to CF adapter IDE to SATA adapter with SSD IDE to SD card adapter Real IDE SSD …

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I need WindowBlinds V4.x

Posted on 2019-05-06, 10:54

by

by Synaps3

in Marvin \ Software

in Marvin \ Software

Does anyone have a copy of WindowBlinds V4? I can find the shareware trial version of it that always pops up a message. It's called WindowBlinds_public - I don't want that one. Does anyone have a link to the full version? Thanks. I am not trying to pirate or anything I even contacted the company …

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Re: Best "modern" GFX card and driver for K6 system

Posted on 2019-03-31, 23:44

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by Synaps3

in Marvin \ Video

in Marvin \ Video

This is the fourth board that I've been having problems with. And, yes, I have tried era correct cards on all the mobos I got. Each board had a different problem. I really don't want to give up on this, but it's becoming much more of a chore than it is fun. Anyway, I am not one to give up, so I am …

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Re: Best "modern" GFX card and driver for K6 system

Posted on 2019-03-31, 02:48

by

by Synaps3

in Marvin \ Video

in Marvin \ Video

Is there a website that people here tend to sell their stuff on other than ebay? I decided I am going to sell this system. Without OGL it's pretty much useless to me. I could get a much older card, but the geforce4 is not even working, so I don't know what the problem is. I've tried 6 different …

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Re: Best "modern" GFX card and driver for K6 system

Posted on 2019-03-26, 22:42

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by Synaps3

in Marvin \ Video

in Marvin \ Video

Your Runnings windows 2000? Give XP a try it could be a driver combo problem. This is starting to sound like a very odd system. A K6-2 gaming in Windows XP or even 2000 seems like an experiment to find the absolute limits of what is functional on socket 7, rather than a usable gaming system. Unless …

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Re: Best "modern" GFX card and driver for K6 system

Posted on 2019-03-24, 18:58

by

by Synaps3

in Marvin \ Video

in Marvin \ Video

maybe you have opengl driver requiring SSE installed Yeah, that makes sense considering it says "privileged instruction" which might mean some instruction that is not implemented in the CPU. But, I don't know about "OpenGL drivers". I never install them, so are they included by the OS or by the …

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