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Re: Evergreen revto486.sys parameters and manual

Posted on 2024-04-16, 05:28

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hey, I have PK-X486S50-3 installed in a hot-rodded IBM 5162. I was able to enable the cache and clock doubling via: DEVICE=C:\REVTO486\REVTO486.SYS /BL /CN /2 (also tried adding /INT=13 /IRQ=6 but didn't help) Benchmarking & DOOM seem to work, however when I try to play Jazz Jackrabbit I get a " …

Re: The World's Fastest 486

Posted on 2024-03-27, 17:16

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

pshipkov wrote on 2024-03-22, 22:43: Very cool @jonf. Share a photo of the memory module. 32mb at "fastest" is rare, unique i would say. Here are a couple pictures, it is a pretty nondescript module

Re: The World's Fastest 486

Posted on 2024-03-22, 17:52

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

https://www.petershipkov.com/temp/retro_pc_images/benchmarks/486_ls-486e_rev_d_q1_200_2-1-2.png A video proof. Details in the last section of the original post explaining the upgrade from 180 to 200 MHz on air cooling. A little bit ago I emulated the mods pioneered by pshipkov & others on this …

Re: 3 (+3 more) retro battle stations

Posted on 2024-03-22, 17:40

in Marvin \ System Specs

in Marvin \ System Specs

Time to seriously consider SOJ-to-DIP adapters ... I have been considering designing some for a while but never got around to it. Has anyone already done this? It seems like the biggest challenge is the width difference of the chips, might have to mount the SOJ chips at the 90 degree angle? Or, …

Re: Lets make new M919 Cache sticks?

Posted on 2024-02-02, 20:44

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for this write up! I was checking UTsource and they have IDT71V124SA10Y (USED) Or IDT71V124SA10YGI (NEW) They are the same price. Do you have a recommendation?

ID 3DFX Voodoo 4 & 5 missing components

Posted on 2023-11-10, 18:58

in Marvin \ Video

in Marvin \ Video

Hi, I have a Voodoo 4 missing a capacitor & a VooDoo 5 missing a coil/inductor. Anyone know the specs for replacements for these parts? See pictures. Thanks!

Re: Toshiba 2805 Yamaha XG Configuration.

Posted on 2023-08-08, 05:45

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Drivers Modified DOS Driver for Toshiba 2805 Series. https://www.vogons.org/download/file.php?id=94316 VXD Drivers http://cdgenp01.csd.toshiba.com/content/support/downloads/t820snd95.exe Unpack Dos driver to C:\Yamaha It should just be Yamaha and all the files not Yamaha\Yamaha or anything else. …

Re: The World's Fastest 486

Posted on 2023-03-21, 18:27

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Very cool JonF. Dry ice. Now that is a tangential approach. Don't want to steal the thunder of your post, just adding a relevant note since you brought the point. I can show the same POST screen with very-selected-cpu + 12V Peltier. POST never completed, didn't explore that properly. Same for …

Re: The World's Fastest 486

Posted on 2023-03-21, 04:43

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thought this belonged here- I got a block of dry ice in my latest shipment of frozen coffee. Decided to set up my 200mhz Lucky Star setup and see if 240mhz was possible. Using the dry ice, once I got the processor to ~-40C (haha) and the system turned on and almost started booting. I even tried …

Re: Packard Bell Legend 610 PB400 Motherboard disk controller failure

Posted on 2023-03-08, 05:22

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Update, turns out it was a weak power supply!

Re: Packard Bell Legend 610 PB400 Motherboard disk controller failure

Posted on 2023-03-07, 03:42

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for the update. I guess I'm pulling the board and inspecting.

Re: Packard Bell Legend 610 PB400 Motherboard disk controller failure

Posted on 2023-03-06, 23:00

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I know this is an old topic, but I have the same board with the same problem. Turned it on for the first time in awhile and get the same fixed disk controller error.

Convert IBM 5175 to connect to standard VGA graphics card without Extron box

Posted on 2023-03-05, 00:14

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi all, I have an IBM 5175 PGA display. It is a neat little CRT. I've read it was a common mod in the past to convert these to have a standard 15 pin VGA cable. I am having trouble figuring out how this mod would deal with different sync polarities at resolutions other than 640x480. So, I think the …

Re: Voodoo 5 Nocuta Mod

Posted on 2023-02-17, 04:42

in Marvin \ Video

in Marvin \ Video

Looks great!

Re: Help me fix 486-VIP-IO motherboard doesn’t post

Posted on 2023-02-11, 05:30

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I got the 5x86 working. My board doesn't exactly match the images but I managed to figure out a config that works. Attached images of the board set to run a 5x86 @ 160mhz. For 133mhz just change the speed to 33mhz instead of 40mhz. Attached my 26GN2 bios. It doesn't ID the CPU as AMD, says Intel 486 …

Re: Help me fix 486-VIP-IO motherboard doesn’t post

Posted on 2023-02-09, 05:59

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hi, I have the 4.26gn2a and only run a DX4/100. Let me know if you were successful in finding a bios compatible with the AMD 5x86. Also, did you find the jumper config for the 5x86? It’s not in the docs I saw online.

Re: Lets make new M919 Cache sticks?

Posted on 2023-02-03, 22:12

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Also interested in 1x 1024kb M919 cache stick when they are available. edit: looking at ordering and building a board based on info below: https://github.com/pancakepuppy/M919_3.3V_1MB_cachestick

Re: LS-486E 4S-1A Rev 1.0 Capacitor question

Posted on 2023-01-30, 05:50

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bump, also looking for jumper settings for this board. EDIT: I’ve found this board uses a hybrid of jumper setting from rev C1/C2 & D. Use those guides I was able to configure everything correctly. The only jumper I don’t know is W2 which is right next to J19 (which 1/2s the PCI clock). If I switch …

Re: Toshiba T5200 mods and upgrades

Posted on 2023-01-30, 05:30

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yep, that was it. I installed the Hi-mem bios 5.3. Processor runs at 40mhz now. However, my computer no longer detects the internal hard drive, only the CF card in the XT-IDE ISA card. I suspect the XT-IDE ISA card BIOS is conflicting with the T5200 modded BIOS. I wanted to follow up on my post. I …

Re: Generic 80386 bios for Evergreen Superchip 286 -> 486

Posted on 2023-01-27, 06:38

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thanks for the suggestion, I tried out the Mr Bios generic 386 and it worked! Specifically "V000B300 STD_386 Generic 386" which is available in the Mr Bios zip file available on this site http://vogonsdrivers.com/getfile.php?fileid=1971&menustate=0

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