Re: 486 133 MHz (33x4) on a system with 25MHz FSB?

Posted on 2022-08-05, 11:10

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Just a remark - if you want more speed, try to get AMD's 5x86 instead of Am486. The 5x86 has double the L1 cache, which is really nice to have when the FSB speed is low. 😉

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Re: Two questions: DRAM iin nanoseconds vs MHz and SRAM nanosecond that can support given MHz for 486DX.

Posted on 2022-08-04, 12:13

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I'll have to check at home, what exactly the specs are on my 486. I have 50MHz FSB (CPU is at 3x50MHz) and with that, i was unable to use the tightest settings in bios (which is also modded to have all options available). Cache chips were 10ns (Full 1024kB of it and potentially fake from china), RAM …

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Re: 440LX and Coppermine

Posted on 2022-07-31, 18:21

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There exists a 766MHz celeron at 11,5x66, if you want to get very high multiplier and then push the FSB. 😉 I have one and love it.

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Re: old AT / ATX power supplies. Are they worth saving?

Posted on 2022-07-26, 18:31

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by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh yeah, save old atx psus that have the -5v for sure ^ What he said! ^ Older ATX power supplies with high current +5V and -5V present are the ones to keep alive. Anything else, once it dies, replace it with the before-mentioned one. But it may not be easy to find a lot of such ATX power supplies, …

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Re: WinWorldPC and Archive.org

Posted on 2022-07-14, 11:43

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by GigAHerZ

in Milliways

in Milliways

The no ebay links rule is extreme but it I believe it deterred a lot of people that would spam us again with ebay posts (hidden as helpful replies) Just out of curiosity and lack of my own knowledge (i don't know the ebay's "seller side", how it works): Does linking to historic auctions also …

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Re: WinWorldPC and Archive.org

Posted on 2022-07-14, 09:29

by

by GigAHerZ

in Milliways

in Milliways

This thread is a bit confusing to me. The OP has clear and specific questions yet nobody wants to actually answer them. Many are posting all kinds of "political babble" of the world and how sky is maybe not blue on some other planets while completely ignoring the actual questions of the OP. Let me …

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

Posted on 2022-07-12, 07:59

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by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My personal preference, was to stop at 1200 grit with a satiny finish, Good thinking ! All the original Intel and AMD CPU's and heatsinks were not "mirror" finish for a reason. Microscopically speaking: small imperfections give more surface area which can translate to more heat transfer with proper …

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Re: Am5x86 running in WT L1 mode?

Posted on 2022-07-11, 12:18

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by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have a Sis 471 based motherboard and it has a specific jumper that sets the CPU cache into WT or WB. In docs, it's just one of the many jumpers based on the cpu type, but i found out that one particular jumper has a specific function of switching the CPU cache mode. Maybe it's similar to your's? …

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Re: Compaq ProLinea 4/25s - Seems to be dead, ideas?

Posted on 2022-07-09, 19:45

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Battery is good, it does hold the voltage well enough that it shouldn't be a problem. (2,7V, while rated at 3V) I did try to clean the cmos - no effect. FYI, 2.7V is close to empty for a button cell. Though I'm guessing that an empty battery likely isn't your problem. I've had a ton of motherboards …

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Re: Compaq ProLinea 4/25s - Seems to be dead, ideas?

Posted on 2022-07-09, 18:19

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So i desoldered the ram chips. It went amazingly well - the kapton tape held beautifully. I recently just bought another roll as the previous one melted very easily and you never know really, what is coming from aliexpress. This one was way better now. Probably my best ever desoldering job i've done …

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Re: Compaq ProLinea 4/25s - Seems to be dead, ideas?

Posted on 2022-07-09, 16:57

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Unfortunately the closest thing i have to oscilloscope is a salea logic analyzer clone. :( But i do have a reasonably good soldering station with hot air gun and some kapton tape, aluminium foil, etc. Probably will need to desolder the existing ram and see, if it starts behaving differently... Good …

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Re: Compaq ProLinea 4/25s - Seems to be dead, ideas?

Posted on 2022-07-09, 10:33

by

by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So, I've received the PLCC to DIP adapters for my TL866II. Here's the bios from the compaq board. Just quickly looking into it, it seems okay. I can read some human readable strings out from it like "COMPAQ" and the date of "07/02/93" plus bunch of error messages the bios can show. Just in case, i …

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Re: Getting the right type of IDE CD-ROM

Posted on 2022-07-08, 08:28

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by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

CN1 is analog audio. On picture, you can see the "most advanced" cable, as there were a few standards for connectors. It's just physical difference.

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Re: Ultimate Retro board submissions thread: suggest board edits and/or add new boards here

Posted on 2022-07-05, 07:03

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by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Solo761 wrote on 2022-07-05, 06:54: Is this thread defunct? ... I have the similar feeling 🙁

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Re: New forum suggestions/Feedback

Posted on 2022-07-03, 11:09

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by GigAHerZ

in Milliways

in Milliways

leileilol wrote on 2022-07-02, 19:40: it's a lot when you consider some of the posters here just plop a big image search resultsphoto gallery in a row. Is it? I would guess people refreshing their "Your posts" or "New posts" pages in total take more resources than the one-time resizing of photo …

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Re: New forum suggestions/Feedback

Posted on 2022-07-02, 19:37

by

by GigAHerZ

in Milliways

in Milliways

Btw, "huge images" also can not be loaded. The upload limit is 5MB, yet once uploaded, it recompresses such images into roughly 1,5MB files. 5MB is not a lot, especially, if its only for a moment. May i ask to increase that limit? Classic mobile phones do easily bigger files than 5MB. What mattes is …

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Re: BIOS image collection - requests, discussion etc

Posted on 2022-07-02, 07:46

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by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It would be absolutely amazing, if someone would have MR BIOS for SIS 85C471 based chipsets. MR Bios docs tell that it exists, but i have not yet found it anywhere... Filename Port Description SIS 85C471 -------- ------- --------------------------------------------------------- V089B410 SIS_410 4 …

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Re: How about a MR-BIOS ROM file repository?

Posted on 2022-07-02, 07:43

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by GigAHerZ

in Marvin \ Software

in Marvin \ Software

My googleing skills have not been enough... :( It would be absolutely amazing, if someone would have MR BIOS for SIS 85C471 based chipsets. Information from one of the bios packs here, in the thread: (but the bios itself was missing :( ) Filename Port Description SIS 85C471 -------- ------- …

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Re: SoundBlaster 32 drops after idle-time, needs to be re-probed

Posted on 2022-06-29, 12:55

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by GigAHerZ

in Marvin \ Sound

in Marvin \ Sound

Almost sounds like a resource conflict. Something that is not triggering very often, conflicts with sound card resources and "kills" it. But what could it be... Can't suggest anything. Take out all other cards that you necessarily don't need, like NIC for example. Does the issue persist? Set sound …

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Re: Patching Award 4.51 bios with fixes - all modifications make it unbootable [Chaintech 6AIA2]

Posted on 2022-06-25, 14:08

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by GigAHerZ

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Necroware made a video of successfully using the batcher. So i used the same CBROM version - 2.07. And now i have patched bios, too: https://www.vogons.org/viewtopic.php?p=1082665#p1082665 Unfortunately, the 66MHz/100MHz jumper is still making the machine dead when at 100MHz setting, and all …

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