Re: Original IBM EGA card repair thread

Posted on Today, 16:24

by

by Rwolf

in Marvin \ Video

in Marvin \ Video

There is a simple fault that can be checked easily with a tester; the jumpers themselves can have poor connection due to oxidation or cracked solder joints / cut copper lines. If so, you could have an explanation to the beeps.

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Re: Original IBM EGA card repair thread

Posted on Yesterday, 21:31

by

by Rwolf

in Marvin \ Video

in Marvin \ Video

Using EGA on that PC requires a specific BIOS version; dated 10/27/82 There is a note about a bug in this BIOS with under-populated RAM banks which can cause the beeps, at the very bottom of the page: https://www.minuszerodegrees.net/5150/misc/5150_motherboard_switch_settings.htm But I guess you …

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Re: Original IBM EGA card repair thread

Posted on Yesterday, 20:48

by

by Rwolf

in Marvin \ Video

in Marvin \ Video

It could be the Network card has a simplified IO address decoder, there is sometimes not a full address decoder implemented in the hardware, so extra address ranges could be overlapping without being properly documented - I've seen that on some boards. Any known conflicts could perhaps be found on …

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Re: Original IBM EGA card repair thread

Posted on Yesterday, 19:00

by

by Rwolf

in Marvin \ Video

in Marvin \ Video

There are some switches you must set on both the PC & XT system board when using the EGA on the older systems. Page 79 in the link below. https://www.minuszerodegrees.net/oa/OA%20-%20IBM%20Enhanced%20Graphics%20Adapter.pdf (Memories...that EGA card was ordered with the first IBM/AT @6MHz , no less, …

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Re: FYI: Steam drops Win7/8/8.1 in 2024

Posted on 2023-06-01, 23:39

by

by Rwolf

in Milliways

in Milliways

Odd...the Ubi Connect I have has been working for me so far - updated today & still seems ok; I know it claims to require Win8 now, but for my Win7/64 it still works somehow. (I do expect it and all other game portals to drop Win7/8/9/etc eventually, but then I haven't purchased a game needing these …

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Re: Fax Modem Software

Posted on 2023-05-30, 10:40

by

by Rwolf

in Marvin \ Software

in Marvin \ Software

WinFax seems to have been popular back in the day; I'm not sure that can be found nowadays. https://en.wikipedia.org/wiki/WinFax Or you can look in Simtels archives, they have some free software for faxing: http://www.lanet.lv/simtel.net/win95/fax.html (I had thought the fax was a long dead item, …

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Re: Attempting to run "Carnivorous" on PC...nothing I tried works, does anyone have any pointers?

Posted on 2023-05-29, 13:34

by

by Rwolf

in Windows

in Windows

That is really wierd...if the item being tested is a time-limited alpha version, maybe only intended for internal testers, then why does it have box covers at all? Somebody messed up in a major way if these were distributed for sale, as none of them would have worked.

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Re: Attempting to run "Carnivorous" on PC...nothing I tried works, does anyone have any pointers?

Posted on 2023-05-29, 08:47

by

by Rwolf

in Windows

in Windows

Well, it would be good to have a verified date, if at all possible - maybe there is another reason than Y2K, it just seemed a likely culprit to me.

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Re: IRQ11 cannot be used except a PCI graphic card

Posted on 2023-05-28, 21:59

by

by Rwolf

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well the IDE controllers have IRQ 14/15 normally - these controllers are usually both on your motherboard as seen in the block diagrams as the EIDE controller, so only in case of the use of a separate IDE controller on the PCI bus would you need to map it like the last image you posted as just an …

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Re: Attempting to run "Carnivorous" on PC...nothing I tried works, does anyone have any pointers?

Posted on 2023-05-28, 19:00

by

by Rwolf

in Windows

in Windows

Ok, so I guess I can attribute this error to Y2K in the game trivia at Mobygames? (I think this is the first time I've ever seen the Y2K issue affect a program this way)

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Re: Attempting to run "Carnivorous" on PC...nothing I tried works, does anyone have any pointers?

Posted on 2023-05-28, 13:29

by

by Rwolf

in Windows

in Windows

I wondered if it was the old Y2K bug popping up, but then the IGN reviwers had problems with the game in 1999 already; the failed review the OP linked was originally posted in september 1999?

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Re: IRQ11 cannot be used except a PCI graphic card

Posted on 2023-05-28, 13:15

by

by Rwolf

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hard to tell...could be something is shorted on the NIC that affected that specific INT line. (Hard to see with this picture, but maybe check for near pins shorted on that QFP package; there could be something there. Most likely not...with a lockup on cable attachment, the problem is possibly closer …

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Re: IRQ11 cannot be used except a PCI graphic card

Posted on 2023-05-27, 23:19

by

by Rwolf

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It is not trivial to replace a QFP package like that bridge, and I would rather suggest to find another working motherboard if that was the problem. Maybe someone else has an identical motherboard to compare with?

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Re: IRQ11 cannot be used except a PCI graphic card

Posted on 2023-05-26, 13:28

by

by Rwolf

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hmm...it would go from one of the board chips yes. If you look at https://pinoutguide.com/Slots/PCI_pinout.shtml you will find the pins for INT A/B/C/D which are the names for the interrupt lines on the connectors, and each interrupt should be connected in parallel to all the PCI connectors on the …

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Re: IRQ11 cannot be used except a PCI graphic card

Posted on 2023-05-25, 20:58

by

by Rwolf

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PS/2 mouse should have IRQ12, what I recall. Do you have a PS/2 keyboard as well? If the test bios actually turned off the mouse port, a cable splitter from the keyboard port might work.

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Re: IRQ11 cannot be used except a PCI graphic card

Posted on 2023-05-25, 09:56

by

by Rwolf

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not sure how the interrupt controllers work on that board, but ISA always uses edge-triggered interrupts, that is how the bus was designed; one nice thing with the PCI bus is the level-triggered interrupts, which allowed sharing them. If you have multiple interrupt controllers, each controller could …

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Re: 3Dfx Voodoo 1 dead ? or I'm doing something wrong???

Posted on 2023-05-24, 22:49

by

by Rwolf

in Marvin \ Video

in Marvin \ Video

The board seem to have had some rough time, so it might be good to check for broken lines where you have scrape marks. Checking for loose pins on the larger chips are also a thing, sometimes one cannot see an open solder pad connection easily. (I sometimes listen for loose pins/pad solder by softly …

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Re: Attempting to run "Carnivorous" on PC...nothing I tried works, does anyone have any pointers?

Posted on 2023-05-24, 12:16

by

by Rwolf

in Windows

in Windows

Covers are processed now at MobyGames, thanks.

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Re: dgVoodoo2 for Windows Vista?

Posted on 2023-05-23, 12:26

by

by Rwolf

in dgVoodoo General

in dgVoodoo General

Maybe entirely unrelated, and I'm not sure which of the SC games included it was now, but back in the day I bought a "splinter cell trilogy" bundle, and one of the games refused to run on my then top-of-the-line XP64 system; I think it was something related to the DRM that differed between the three …

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Re: FYI: Steam drops Win7/8/8.1 in 2024

Posted on 2023-05-22, 14:20

by

by Rwolf

in Milliways

in Milliways

I guess it depends on the method Steam uses to identfy the O/S? There may be actual functionality missing or changed in an older O/S that Steam needs to use, so that would have to be re-implemented separately. Equally, missing obsoleted functions may also stop older games running on a new O/S. Some …

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