Re: S3 Vision 968 VLB replica
Posted on 2024-04-25, 03:03
Madao, if you ever get to testing out that returned 968VL card, I'm interested.
Re: AMD K7 "goldfinger" cloning thread
Posted on 2024-04-23, 09:58
Couple hundred GBP for such a simple PCB? I guess that was before free PCB drafting software was mainstream, so maybe that cost is within the context of the time. What are some of the companies which we can send an electronic schematic to and have them create PCB gerbers for us? I think that would …
Re: Pentium Pro multiplier options
Posted on 2024-04-18, 18:42
I could only run 233 MHz reliably on 512K or lower CPUs. Were you able to get 233 MHz out of a 1024K chip without increasing the voltage?
Re: Evergreen revto486.sys parameters and manual
Posted on 2024-04-16, 06:08
Did you review my thread documenting register settings for various CPUs? https://www.vogons.org/viewtopic.php?t=45756 Under the Blue Lightning subsection: Many systems have trouble with the IBM Blue Lightning BL2/BL3/DLC3 chip. Use HIMEM with /TESTMEM:on for an initial test. The following HIMEM …
Re: Anyone have the Hollywood Plus, REALMagic Sigma Designs EM8300 drivers for NT4
Posted on 2024-04-15, 23:00
Are the cables getting hard to find? I only have one cable myself. While I have found the factory pass-through cable is pretty decent for 2D desktop use, not so much for glide 3D mode at 1280x1024. When I run GLQuake with a Voodoo3, the drop in quality is obvious. For this reason, I leave the pass …
Re: Native PS/2 mouse implementation for 386/486 boards using the keyboard controller
Posted on 2024-04-10, 02:49
Hello, it's me again. Has anyone had issues with the PS/2 mouse (with this modification) not working in Windows 98 but working without issues in DOS? I don't think I have tested the PS/2 mouse mod in Win98, but every system I've used it in which contained Windows 95 has run beautifully. Normally I …
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-07, 23:07
Feipoa, i remember the post you linked very well. Was going through it multiple times before became an active poster here. It was one of the few info sources at the time with enough sample points for credibility. Thanks for that. And you still don't own a Voodoo2? I agree with ChadTi99 that adding …
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-06, 17:58
Hey guys, it’s been a while. I’m pretty sure the 35.1 GLQuake score was with a Voodoo3. Referenced here: https://www.vogons.org/viewtopic.php?p=1069248#p1069248 GLQuake (fps) Microstar MS-4144 (4x50), MGA = 35.1 Luckystar LS-486E rev:D (3x66), Voodoo3 = 35 Biostar MB-8433UUD-A (4x50), MGA G200 = 30 …
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-06, 17:54
There's a list of glide capable games with a frame rate display that work on socket 3's in this Voodoo1 vs. Voodoo2 thread I ran years ago: Voodoo 1 vs. Voodoo 2 on a 486 The challenge is to get the frame rates into some sort of timedemo.
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-01, 08:24
pshipkov wrote on 2024-04-01, 06:05: ...but that's impossible now since the board is not with me anymore. Did someone actually buy it, or did you throw the lemon away?
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2024-03-30, 23:55
By the way, there was another of these SXL2-50 chips with flush dongle from Improve-It that sold for $250. I was surprised to see that it sold for that price. https://www.ebay.com/itm/326071534917
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2024-03-30, 23:51
kingcake, if I wanted lower VRM or CPU temps, I'd us my $1 in-line buck. Interposer redesign not needed. Without it, 35-37 C on the VRM and 27 C to the CPU is nothing to frown upon. Nonetheless, I took some additional measurements at steady state, 90 MHz. Linear MIC29302WT only (no in-line buck) 5. …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2024-03-30, 11:45
The CLK2 (clock input) also has a VCC minimum of VCC -0.3V. If VCC is 5.25V, but CLK2 only reaches <4.95V then CLKS may not be read. This is interesting. The 5V rail on my motherboard, at a point near the cyrstal osc, is 5.08 V. From the values you mentioned, I should be able to take the CPU up to …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2024-03-30, 04:02
I'm running a 3.6 V CPU at 5.15 V. I might be willing to run my worst SXL2 chip at 6V to see if it can handle it. The worst CPUs can only do 75 MHz though.
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2024-03-30, 01:21
As pshipkov mentioned, I need 5.15 V going to the SXL2 for stable operation at 90 MHz. I only need 3.85 V for stable operation at 80 MHz. That should read 37 C on VRM heatsink, steady-state, with only the linear reg. I've fixed it now. While waiting for my kids to get ready to go out (they take …
Re: Anyone Interested In Determining The Pinout Of An IBM 486SLC3?
Posted on 2024-03-29, 22:56
I didn't look into the SLC3 specifically, but rather looked into the DLC3, or BL3. It was determined that a QFP 386DX could be removed from a PGA interposer and a BL3 installed. I didn't come up with this idea, but rather first saw an eBay listing (~3 years ago) for such a conversion and decided to …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2024-03-29, 22:42
I think you should give a murata buck converter a try look in my sig, pcb projects, top of first post. I already have some of these mini adjustable buck converters I was considering as a fall-back option. I kind of like the feel of using the existing linear reg without any external components. At …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2024-03-29, 09:50
I also experimented with some parallel resistors. No judgements please! I didn't want to put a whole lot of time into this. I don't have a large enough stockpile of power resistors in the 0-15 ohm range. The largest resistors I had in this range were 2 W, so I placed them in parallel to share in …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2024-03-29, 09:50
I bent the fins of the VRM's heatsink out to glue on a 25 mm fan, however I later switched it to a 30 mm fan. The resistor on the fan is to slow it down. Overly loud fans can be irritating. However, this resistor is connectorised onto the wire. I can easily replace it with more or less resistance, …
Re: Custom interposer module for TI486SXL2-66 PGA168 to PGA132 - HELP!
Posted on 2024-03-29, 09:50
Tried some heatsinks typically found on TO-220 IC's: SXL2-90_07.JPG I eventually went with the larger VRM heatsink and a 45 mm CPU fan. Notice how the heatsink on the CPU wasn't placed on dead centre from the factory. So that the VRM gets cooling from two heatsinks, I've had to fill the gap with …
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