Re: Where to obtain 110 MHz RAMDAC for ARK1000VL graphics card?

Posted on 2023-10-09, 00:23

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

WJG, if you do scan it, are you able to do it in 1-bit so that the PDF is small enough to attach and so that it will print well? 300-400 dpi is probably sufficient. See the example I included earlier. I think so. I don’t have a good flat-top scanner anymore, unfortunately, but I have access to a …

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Re: Where to obtain 110 MHz RAMDAC for ARK1000VL graphics card?

Posted on 2023-10-08, 23:43

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by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Which you do. Unless you use the patched BIOS, you just install the missing memory, and you get access to 1280x1024x256c (albeit interlaced). On the other hand, the manual does not claim that the PCBs for the 80MHz and the 110MHz version is identical. I see that you compared your card with the 110 …

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Re: Home Telephone System for Modem Use

Posted on 2023-10-08, 23:34

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by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That would "only" allow a 33.6k dial up connection even if your modem is 56k. A telephone system that actually works to the point you could use it for dial up internet access is quite a complicated thing to set up. At some point, I believe someone on eBay was selling a more-or-less-complete (unless …

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Re: Who bought this board from ebay? Mylex MGI 486

Posted on 2023-08-16, 19:47

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by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sorry about the delay. I saw this post but haven’t had a moment to take proper photographs of the board. I snapped a few today. I bought this board and so far, it seems pretty solid. I modified the BIOS using MODBIN to fix the dirty TAG—it’s sub-optimally configured such that the alter bit/TAG setup …

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Re: Bought these (retro) hardware today

Posted on 2023-08-04, 14:48

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by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Finally, I found one of my grails. This one has eluded me for much, much longer than I’d like to admit. Now to figure out if we’re doing an EISA 486, dual-P54C w/ EISA, or dual-P55C w/ EISA… As much as it’d be a bit slower in a Pentium build, it would be fun to see this alongside a Voodoo/Voodoo2. ( …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2023-07-11, 19:14

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by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for letting me know! I ordered these a while ago and haven't had the time to assemble them. I'll place another order ASAP and use the pre-release or the latest when it's released! I'm sorry, I didn't mean to sound pushy, and certainly don't want to impose. This project is wonderful and I know …

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Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!

Posted on 2023-07-10, 21:57

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not to butt in, but I really like this idea for licensing. To add to Feipoa's point, it might be worth considering CC's ShareAlike feature. That would require such that all descendants of your project license their product similarly and provide some attribution, kind of like a fork on a GitHub repo. …

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Re: Where to obtain 110 MHz RAMDAC for ARK1000VL graphics card?

Posted on 2023-07-07, 00:55

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Your analysis doesn't sound very encouraging for 1280x1024x256c-60Hz, and even less for 1024x768x64k-60Hz. Were there any LCD's which support this 87Hz interlaced mode? Depending on the shipping method employed, I should have the 110 MHz RAMDAC in a week, unless it ships by boat, then I don't know …

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Re: Where to obtain 110 MHz RAMDAC for ARK1000VL graphics card?

Posted on 2023-07-06, 15:03

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

When I was installing the drivers in Windows 95, I noticed that there were two options listed: ARK Logic 32-bit VL ARK Logic 64-bit VL ARK_Logic_64-bit_VL.PNG I've been using the 32-bit VL option. Wasn't only the ARK2000 series 64-bit? Did some manufacturers use the ARK2000PV on a VLB card? …

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Re: FIXED! [LREQ issue] Weird issue with VLB VGA in second VLB slot on ALi ECS Panda/Daewoo AL486D 386 motherboard

Posted on 2023-06-30, 01:40

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

@Horun Excellent point! The vias on this board are exceptionally thin-walled and really do not seem to be that well plated. Opening it up and actually repairing it in that regard might be worth it long-term. The bodge I have going was very hard to solder, but it works...mostly. There's an update …

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Re: Weird issue with VLB VGA in second VLB slot on ALi ECS Panda/Daewoo AL486D 386 motherboard

Posted on 2023-06-30, 00:43

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Any ideas as to what this means? The system required a hard reset after this final trace command. In that slot your system hangs on the first access to the graphics card. There are multiple possible explanations to this behaviour: The S3 chip stays passive on the local bus until it is woken up by a …

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Re: Weird issue with VLB VGA in second VLB slot on ALi ECS Panda/Daewoo AL486D 386 motherboard

Posted on 2023-06-29, 01:31

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

AX=1201 BX=0032 CX=8000 DX=0000 SP=FFD4 BP=FFD8 SI=0000 DI=0000 DS=0000 ES=1349 SS=1349 CS=1359 IP=1116 NV UP DI NG NZ NA PE NC 1359:1116 BAC303 MOV DX,03C3 -t AX=1201 BX=0032 CX=8000 DX=03C3 SP=FFD4 BP=FFD8 SI=0000 DI=0000 DS=0000 ES=1349 SS=1349 CS=1359 IP=1119 NV UP DI NG NZ NA PE NC 1359:1119 …

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Re: Weird issue with VLB VGA in second VLB slot on ALi ECS Panda/Daewoo AL486D 386 motherboard

Posted on 2023-06-28, 23:54

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

use a zero modem cable, initialize COM1 with mode and redirect DOS' input and output via ctty command (in autoexec.bat) The way to do that is mode com1:9600,n,8,1 ctty com1 You should test these commands with a working graphics card (like your Trident card). To get back to control your computer …

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Re: Weird issue with VLB VGA in second VLB slot on ALi ECS Panda/Daewoo AL486D 386 motherboard

Posted on 2023-06-28, 22:19

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

wait, i explain "serial debugging": use a zero modem cable, initialize COM1 with mode and redirect DOS' input and output via ctty command (in autoexec.bat) use a serial console on a laptop nearby, like every hacker does ^_^ OH! This makes so much sense. Thank you @Disruptor. I’ve done this many …

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Re: Weird issue with VLB VGA in second VLB slot on ALi ECS Panda/Daewoo AL486D 386 motherboard

Posted on 2023-06-28, 20:15

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The best way to debug the issue without a monochrome card is to set up serial debugging. Pull the ROM from the VL card (you need to do that anyway to prevent the POST to lock up, even with an MDA installed), ignore the beep code that there is no valid graphics card. Have the BIOS image in a file, …

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Re: Weird issue with VLB VGA in second VLB slot on ALi ECS Panda/Daewoo AL486D 386 motherboard

Posted on 2023-06-28, 13:56

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Potentially a dumb question: Do you (or does anyone) know if there’s a book/manual/datasheet somewhere that describes VLB VGA initialization routines? I’m wondering if it’s an issue at a step right before the BIOS ROM is read. Basically you can boot from a monochrome graphics card and initialise …

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Re: Weird issue with VLB VGA in second VLB slot on ALi ECS Panda/Daewoo AL486D 386 motherboard

Posted on 2023-06-28, 13:35

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

On a local bus VGA card all the communication with its BIOS runs through the ISA part of the card. This makes sense, and I kind of figured that by looking at the traces on my Trio64. I guess the issue lies elsewhere then? Maybe in a ready signal of some kind or perhaps in a case where there’s one …

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Re: 3 (+3 more) retro battle stations

Posted on 2023-06-28, 03:34

by

by WJG6260

in Marvin \ System Specs

in Marvin \ System Specs

My pleasure! :) I have had trouble procuring an SXL2-50, so these have made do in the meanwhile. I hope to find an SXL2-50 in PGA132 someday. The SXL PGA168 interposer has of course added lots of variety to the mix, however! Interesting! I wonder why it is that the MR-BIOS is more limited FSB-wise. …

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[Seemingly Fixed! LREQ issue] Weird issue with VLB VGA in second VLB slot on ALi ECS Panda/Daewoo AL486D 386 motherboard

Posted on 2023-06-28, 03:14

by

by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello all! I've been messing with this Daewoo AL486D, Revision 1.1 motherboard, which came out of a Leading Edge PC I own. I took the motherboard out the case for testing and noticed something quite odd: The VLB slot farthest from the CPU, at the bottom of the board, seems not to work with a VLB VGA …

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Anyone have the RapidCAD installation utilities?

Posted on 2023-06-27, 00:16

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by WJG6260

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Recently, an Intel RapidCAD sold on eBay in its box for a pretty hefty sum. I noticed, while watching the listing, that the box contained a diskette titled “Intel RapidCAD Engineering CoProcessor Utilities.” Does anyone know if there exists an archive of an image of this diskette somewhere? I’ve …

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