Wow that is some seriously impressive work. Those boards look absolutely gorgeous.

Thanks! Hopefully soon (ish) I will post photos of the RTX3090 sized 3dfx card 😁.

OOOHHH I want to see that. Have you made any upgrades or other improvements to them besides the bigger pcbs?

Yes, of course. There's a lot of extra stuff on the board.

Very nice I can't wait to see it

Good lord... I was just messaging you about the original AGP > PCI adapter. Just caught up with this thread and seen your V2 > DVI adapter. That is jaw droppingly impressive. Hats off to you!

Thanks! The hardware is complete, I "just" need to finish the FPGA part (which might take a bit, I'm new to FPGAs).

#sdz, you are simply GREAT

Some time ago, I tested a few PCI Geforce cards in my 486.
Are the AGP->PCI bridges compatible with 486 machines?

cyclone3d wrote on 2020-09-23, 15:50:

I have one of those AGP to PCI adapters. I can take some high resolutions scans and post them if that would help.

have you been able to get other cards to work in it? Like say a 9800gt 😁
Or does it only work on old voodoos?

sdz wrote on 2020-09-23, 17:51:

Something like this? […]
Show full quote

Something like this?

20200624_184104.resized-1024x365.png
20200624_1841042.resized-1024x365.png

Even made a bracket for the V5 😀
20200624_183901-1024x665.jpg
20200624_183924-1024x634.jpg

I designed it a couple of months ago, AGP 1.0 1x (3.3V only), 4 layer board with uninterrupted ground plane under PCI signals, properly terminated unused AGP signals, 12V PCIe power input, 3.3V/5V switching power supplies which can deliver more power than the AGP specs require, separately filtered AGP VIO, high speed level shifters, it can work in any 3.3V/5V PCI slots, 33/66MHz jumper (if the mobo supports PCI 66MHz ofc), 2 fan headers with support for 5V/12V 3pin/4pin fans and adjustable PWM.

Holy crap man. Very nice!! Have you made any more improvements?

What’s the fastest card you have tried in it?

Heh, I started down this rabbit hole last night. I've been getting into Unraid and what is possible with VMs. I was looking at some tutorials on this YouTuber's channel and noticed in his VM dashboard he had machines setup labeled as Windows 98 and Windows 3.11 ...I thought "huh" and went searching through his videos. Sure enough he had made one regarding the subject.
https://www.youtube.com/watch?v=rgIF8uG-2G0

So I'm already hunting down PCI-E to PCI adapters, however I'd really be curious to see if I could get a hold of a PCI-E to AGP adapter for the purpose of stubbing AGP hardware to pass through to a VM. ...and I kind of realize this isn't practical in anyway really. But I'll be damned if it isn't really cool. 🤣

I also came across this...
http://arstech.com/install/ecom-prodshow/usb2isar.html

I would think that ISA running through the USB bus might be a little odd though. I'm pretty much just in the theoretical phase of my over excitement. I haven't gotten too hands on yet.

Anyway I suppose my point is, please make a PCI-E to AGP adapter!

I already made one, but haven't assembled it yet.
PCIe x4 to AGP 1.0 1x up to 150MHz AGP clock. I will publish all the files when I have some free time.

sdz wrote on 2021-01-29, 19:05:

I already made one, but haven't assembled it yet.
PCIe x4 to AGP 1.0 1x up to 150MHz AGP clock. I will publish all the files when I have some free time.

Any chance you will make some assembled units and post them for sale? I'm sure its a bit of an undertaking and I'm not trying to press for a "right away" solution. I'd just be really interested in purchasing one if it were to become available.

At the moment I don't plan to make more/sell them. Assembly isn't a problem, but I hate shipping stuff through the post office.

sdz wrote on 2021-01-29, 19:05:

I already made one, but haven't assembled it yet.
PCIe x4 to AGP 1.0 1x up to 150MHz AGP clock. I will publish all the files when I have some free time.

So this is to install AGP card in PCI-E slot? Or other way around?
I was thinking myself about putting modern PCI-E cards in AGP slots (even 1x) to have better transfers than with PCI-E - PCI bridges (like in GT520 PCI, where you can really feel the PCI bottleneck). And having fun trying to run GTX in Pentium 3 PC or so.
I tried to make some research in this topic PCIe card in AGP slot. Do such adapters exist?, which was basically salvaging nvidia bridge chips or using PCI-E - PCI bridge in 66 MHz / PCI mode in AGP slot.

Yes, it allows using an AGP card in a PCIe slot. The bridge IC I used (PI7C9x130) can be configured to work the other way around though.

Okay, this is exactly the same IC i wanted to use too. But I didn't start designing the PCB yet.

sdz wrote on 2020-12-17, 19:36:

Thanks! Hopefully soon (ish) I will post photos of the RTX3090 sized 3dfx card 😁.

I'm sure you saw that Voodoo 9000 joke video with 32 chips... https://www.youtube.com/watch?v=_3iHV0NvLPI

Will be awesome to see a real 8-way implementation.

Will be awesome to see a real 8-way implementation.

Quantum3D AAlchemy 8164. Which is a beast in it's own way.

The Serpent Rider wrote on 2021-02-05, 06:56:

Quantum3D AAlchemy 8164. Which is a beast in it's own way.

Cool. Thanks for this. Didn't know that existed. This will give me some hours of internet exploration.