Re: Attempting to fix Gainward GeForce FX 5500

Posted on 2023-11-21, 23:01

by

by Hojo82

in Marvin \ Video

in Marvin \ Video

Karbist wrote on 2023-11-21, 22:15: https://www.ebay.co.uk/itm/235165470094 4th picture but It's not very clear, 20A ,30A or 70A. Thank you! I've contacted the seller...hopefully they'll respond telling me what the values are.

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Attempting to fix Gainward GeForce FX 5500

Posted on 2023-11-21, 21:14

by

by Hojo82

in Marvin \ Video

in Marvin \ Video

So I received an FX 5500 that is showing the BIOS initialization screen with bad text color in the foreground and background at regular intervals. I’ve removed one obviously bulging cap, but I also noticed that some of the surface mount chips were ripped off. I can deduce the values of the missing …

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DTC5160X RLL controller firmware image?

Posted on 2022-05-13, 15:29

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a DTC5160X RLL drive controller that has stopped functioning, potentially due to receiving bad power. I'm hoping that perhaps only the 27C64 EPROM has been fried. I'd like to replace it with a 28C64 EEPROM, but I don't have an image of the firmware. Does anybody here have such a firmware …

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Re: SSH2DOS - Updated for 2021 standards

Posted on 2021-04-15, 11:51

by

by Hojo82

in Release Announcements

in Release Announcements

This is awesome! I got bitten by the old cipher issue in the past couple of months, so this is a welcome update! 👍

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Re: FIXBOOT.EXE - Allow booting from secondary drives

Posted on 2021-03-03, 14:16

by

by Hojo82

in Marvin \ Software

in Marvin \ Software

To save me going through all the source files (coz I'm too lazy), do the sources conform to ANSI C? (ie, is it portable code, or will it only compile in Borland C++ without modifications?) Seems like another interesting project that could be used in a custom OS. Not particularly. When you get into …

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FIXBOOT.EXE - Allow booting from secondary drives

Posted on 2021-03-02, 21:09

by

by Hojo82

in Marvin \ Software

in Marvin \ Software

So I've recently gotten into retro computing in a big way and wanted to make my machine have a number of OS installations, but of course one runs into the issue of being unable to boot most OSes from secondary drives. Certainly some bootloaders like XOSL will get around this by hooking int 13h, but …

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Re: CDROM Emulator?!?

Posted on 2021-02-11, 16:30

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This looks good btw but for 200$?! https://shop.tattiebogle.net/product/prod_EkTnv3Tk2Trxhf I really would like CD emulation myself (and actually think $200 isn't outrageous for this), but you have to realize that the expense is caused simply because emulation of a much higher throughput device …

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Re: Asus P2B-DS won't turn on - It's working sporadically... 😕

Posted on 2021-01-27, 16:53

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Please let me know any additional information you might need. BTW Hojo82, I am having trouble seeing any of your photos. Either edit your posts to attach the photos on VOGONS or consider using an alternate file host like Imgur or others. If you really want to use Google, see here for my procedure …

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Re: Asus P2B-DS won't turn on - It's working sporadically... 😕

Posted on 2021-01-27, 16:32

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This may be relevant to the PS/2 port problem . https://www.vogons.org/viewtopic.php?f=46&t=62001 Yeah, so I did some voltage testing this morning. So in testing the voltages on both ports I was initially getting voltages jumping all over the place, from millivolts to around 2-3V. While testing the …

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Re: Asus P2B-DS won't turn on - It's working sporadically... 😕

Posted on 2021-01-27, 01:28

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'm following up with the eBay seller. The PS/2 ports are non-functional as well. When I plug in the keyboard to PS/2 it doesn't work (USB does). Plugging a mouse in causes incessant beeping. I kind of wonder if repeated plugging and unplugging stressed the board there and is causing all of the …

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Re: Asus P2B-DS won't turn on - It's working sporadically... 😕

Posted on 2021-01-26, 21:55

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is there possibly something metallic in the case causing an intermittent short ? It actually started misbehaving again before even putting it into the case, so I'm pretty sure a short is out of consideration. Is the board warped either standalone or when installed in the case ? I couldn't discern …

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Re: Asus P2B-DS won't turn on - It's working sporadically... 😕

Posted on 2021-01-26, 21:16

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, so more bad news. I placed it back into the case and powered it on with the new power supply and the fans spun up (so this is different than last time) but nothing came on screen along with no diagnostic beeps. I tried all the usual suspects (removing cards, CPUs, memory, etc.) to no avail. I …

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Re: Asus P2B-DS won't turn on

Posted on 2021-01-26, 18:01

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, so even though I considered it highly unlikely that the power supply was bad because it was brand new, I decided to pull my Corsair 750W from my work desktop and try it. Lo and behold it started booting with both processors, 512MB of RAM and the video card! https://i.imgur.com/NhwnJjs.jpg …

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Re: Asus P2B-DS won't turn on

Posted on 2021-01-26, 04:58

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes The BIOS used most is the 1014.003 beta which in my experience works for all Coppermines. https://www.asus.com/supportonly/P2B-DS/HelpDesk_BIOS/ If this solves the problem you are lucky. No dice. Pulled the ROM and flashed the new BIOS but same behavior. There must be other changes on the board …

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Re: Asus P2B-DS won't turn on

Posted on 2021-01-26, 03:51

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Please try with a P II or a PIII from the Katmai generation. The 600E that you have is Coppermine and supposedly does not work on your revision 1.05 board. https://web.archive.org/web/20190319061355/http://homepage.hispeed.ch:80/rscheidegger/p2b_procupgrade_faq.html So looking at the page and also …

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Re: Asus P2B-DS won't turn on

Posted on 2021-01-26, 02:50

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Interesting. So the continuity check results in no continuity between ground and any power/control pins except the +5V rail (not even the always on +5V). The other interesting thing is that eventually the beeping stops and it registers a slowly increasing resistance (on the order of hundreds of ohms …

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Re: Asus P2B-DS won't turn on

Posted on 2021-01-26, 02:30

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My guess is that something is shorting that PSU out or that the PSU is defective . First, make sure that nothing is connected to the PSU other then motherboard and the AC power cable . I would try another PSU, if you have a spare. Alternatively, if you have a multimeter, set it to resistance mode, …

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Re: Asus P2B-DS won't turn on

Posted on 2021-01-26, 02:29

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

shamino wrote on 2021-01-26, 02:06: Does it act any differently if you put the CPU in the 2nd slot instead of the 1st? I've tried it both ways, to no avail. 😢

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Re: Asus P2B-DS won't turn on

Posted on 2021-01-26, 01:30

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Give more details on the build like what board version of the P2B-DS (should be marked on the board itself & on the ISA slot nearest the edge), what cpu / memory / PSU / video It's a P2B-DS v1.05. The CPUs are both P3 SL43E 600E/256/100/1.65V. The memory is 512MB of 4x128MB PC100 non-ECC SDRAM …

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Asus P2B-DS won't turn on - It's working sporadically... 😕

Posted on 2021-01-25, 23:04

by

by Hojo82

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So I just purchased a P2B-DS from Ebay and built an entire machine around it, but unfortunately when I attempted to power it on, nothing happened. Now when I turned on the PS switch in the back, I get a brief spin of the PS fan and the CPU fans, along with a small sound coming from the onboard …

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