RetroTech Chris Profile picture
Nov 15, 2025 20 tweets 14 min read Read on X
Last week, at the System Source swap meet, I picked up a bunch of interface cards! Additionally, I have this Microchannel network card that arrived in the mail. Let's test these cards out on the Pacman PC! Time for a long 🧵 Image
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As I was thinking about which PC to use to test these, the Pacman PC ended up being ideal. Its motherboard has ISA, PCI, and AGP support! Some of you might remember this CYS Tech CYSMBD-694X motherboard that I picked up from Ali Express a little while back: Image
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We're going to use Windows 98 SE to test. To ensure that I don't clutter my install with a bunch of driver install fun, I am going to make a backup copy of Win98SE that we will use for our purposes today. Image
First up, we will test this 3Com Fast EtherLink XL PCI card, and this S3 Trio64V+ card. The video card got detected right away! Perfect! I set the resolution to 1024x768x256, and set the refresh rate to 60Hz since it seemed to perform best at those settings. Image
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As for the network card, it got detected as well, and we are able to browse the web. Excellent. Image
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Time for the second batch of cards. I put the network card in a different PCI slot, and it got angry. Moving it to the same slot as the first round of testing fixed things right up! Image
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As for the video card, I wasn't 100% sure what it was, so I fired up Unknown Devices. It's an ATI Rage 128 Pro. I hunted down drivers on The Retro Web, but looks like we are going to need to install DirectX first. Image
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So, I installed DirectX, installed the drivers, set the resolution, and we are looking good! Image
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Okay, time for the third batch. We'll test a Realtek RTL8139D card, and this ATI 3D Rage Pro AGP card. The video card detected right up and I was able to set the video mode and refresh rate to my liking! Image
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As for network, I needed to find drivers, so I headed over to The Retro Web. Smooth sailing, and we are now online! Image
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Time for the fourth batch. We have a Cirrus Logic CL-GD5440 video card and another Realtek RTL8139D network card. The video card detected right up, but on reboot, it went out of video range. Ugh. Guess we better head to safe mode. Image
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While in safe mode, I thought I would see which video card drivers are now installed, and it is becoming quite the list 😂. I tweaked the refresh rate setting, which then prompted me to start up with 640x480x16 in "regular mode", which is exactly what we want. Image
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Okay, so back in "regular mode", I was able to set the resolution to 1024x768x256. Good enough.. I bet higher modes and depths are interlaced, hence the "out of range" earlier. Also, the network card is working great! Image
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Alright, next batch. We have this Trident TVGA 8900D ISA card, which totally doesn't belong in a Pentium III, and a Smart Modular Technologies 90079 "riptide" card. I had to run the "Add New Hardware Wizard" since I don't think this card is Plug and Pray. And... oh, this again? Image
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Well, you know the drill. Safe mode. Tweak some setting. 640x480x16. Boot back in and adjust. This card kept getting ticked off with more than 16 colors, so 800x600x16 it is. It is a nice card though with 1MB of memory, it's just better for a DOS system. Image
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Okay, time for that riptide card. It was a royal pain to find drivers for it. The drivers listed on The Retro Web didn't work, at least for Win98. But I eventually found something that did, geared for an HP Pavilion! This card is a combo modem/audio card! Image
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So, I went one by one on the yellow question marks in device manager, and we got things to work! Looking good, and this card doesn't sound half bad either! Image
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Let's fire up Retro SHOUTcast to have a quick listen. Gotta love the crappy video mode we are in still 😂
Ookay, we're almost done. I have one other Smart Modular Technologies 90079 card to test (different revision). It was a bit flaky at first, but got detected on reseat. I launched a terminal program so that we could see some information about the modem! Yes, it's a soft modem. Image
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So, with this, we're left with the one Microchannel card to test, but honestly, I don't feel like getting the PS/2 out right now, so we might look at that a little later. I hope you enjoyed this testing session, thx for following along!

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More from @RetroTechChris

Feb 8
Let's talk about my newest PC acquisition, which might be the most budget build ever 🤣. But there was a reason for buying it. I'll cover that... along with a Windows 95 installation, in a 🧵. Let's go! Image
First, why did I buy this? Well, the plan was to do a case swap with another system I had, which had some strange "fit" issues. However, that planned got smashed... literally. So, I thought we might as well explore what's left of this PC!
This system has a PC Chips M748MR motherboard, an Intel Celeron 400 MHz processor, and 16MB of RAM. Yikes! And of course the case is nothing fancy, but is nostalgic for me. But yea, this is the most budget build ever, for sure! Image
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Read 13 tweets
Feb 1
I just watched a video where YouTuber Action Retro set up a web server on a floppy disk using ELKS (the Embeddable Linux Kernel Subset). I thought, I have to try this for myself! Let's talk about it briefly in a 🧵 Image
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So, first of all, what is ELKS? It's the Embeddable Linux Kernel Subset, and it will run on a wide range of hardware, including 8088 systems. Pretty wild for a modern product! If you want to read more or try it out, GitHub repo is here: github.com/ghaerr/elksImage
Alright, let's go. I need to choose a system that will support the networking for ELKS. Turning to the Wiki, as of right now, the network cards supported are NE1000, NE2000, Western Digital 8003, Western Digital 8013, and 3com Ethernet III (3c509). My 486 DX4 has a 3Com 3c509! Image
Read 11 tweets
Jan 25
I got a new DOS file transfer toy! Now, these have been around since the dawn of time, but let's talk about it: a MicroSD to LPT Printer Port Adapter. We'll give it a test on my Compaq LTE 5400. Time for a 🧵 Image
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First, if you are interested in reading about these, there is a thread on Vogons! Included in that thread is where I found the DOS drivers for it, you can go here for that, and to read about this device! vogons.org/viewtopic.php?…Image
Also, here's a few more perspective shots of it, captured from different angles. Image
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Read 11 tweets
Jan 17
I got some Xircom PC Cards in the mail today! Let's test them out and see if they work! 🧵 time! Image
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First, if you missed it, a few days ago I posted this. Given what I have paid for these in the past, I was very pleased!
And speaking of the past, here's what I had before today: four cards. These Xircom RealPort Ethernet 10/100 cards are great for getting a laptop without Internet connected to a wired network! Image
Read 10 tweets
Jan 8
My holiday break is quickly coming to an end. So, I think it's time to power on the retro PCs that I have yet to power on recently. I am sure this will go flawlessly 😂. Let's do most of this, in real time, in a 🧵 here! Image
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Alright, you've already seen the first three. My trusty, original 486DX4/100 powered right up, as did the Packard Bell Multimedia 601 Pentium 233 MMX Image
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How about the Kehtron 486 DX/50? Weeelll.. the front seven segment display needed reconnected (I really should fix this permanently), and the sound card was being a pain, but I moved it over one slot and it is now working! Image
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Read 30 tweets
Jan 3
The challenges and solutions in retro computing never cease to amaze me, and today's project is no different. Today's goal was getting working storage in this AST Premium Exec 386 laptop. And fortunately, somewhat against the odds, I found one! Let's talk about it in a 🧵 here! Image
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So, anyway, the issue I had with this laptop is that the original 20MB 3.5" IDE hard drive had died. I thought "no problem, I'll pop on eBay and get one." Except they are scarce and expensive. I picked up two 120MB drives and one 40MB drive. None of them worked. Image
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In the past, I had also tried a CF card. I could get the CF cards to a point where they were accessible, but when I go to boot, I get a blinking cursor.. and sometimes a "non system disk or disk error" a few minutes later. Tried multiple CF cards, same result. Image
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Read 9 tweets

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