Re: 3 (+3 more) retro battle stations

Posted on 2022-02-13, 04:23

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

I have (had) 4 Am5x86 CPUs that can do 200MHz. One of them actually belongs to Anonymous Coward. 1. An ADW that can do 180MHz on air cooling at 3V but not fully stable with complex compute. With 5V Peltier fully stable. It can do 200MHz with 4V and 12V Peltier. Currently in the 180MHz rig. 2. One …

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-12, 21:56

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by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

Yes, tried hard to wake it up, including on Biostar UUD which is also rock solid mobo, but the poor chip is dead. Maan. No blame whatsoever. I should know better. It was a stark reminder that running old silicon on out of spec voltages needs to be handled carefully. This was the only CPU i had that …

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-12, 19:41

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

At Chadti99 WARNING about running ADZ/ADW cpus at 4v or higher on air cooling. The ADZ processor here that was working at 200mhz air cooling is dead now. I deeply regret going for it now. This was the one that lit up at 240mhz with 12v Peltier. Damn. 🙁

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Texelec.com - that was nice

Posted on 2022-02-12, 18:12

by

by pshipkov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Recently purchased some stuff from texelec.com. There was a problem with shipment - package was lost and so on. They were so understanding about it - resolved everything right away with nice personal touch. Made me go out of my way and share the experience here. Highly recommend.

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-12, 17:58

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

On-board IDE is stable at 66mhz and 1:1 for sure. It was never a problem with any of the LuckyStar boards here, afair. Trying to think of why you are having this issue ... Actually what exactly is the problem ? No boot or unstable after boot ? I can double check the Promise controller if you want - …

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-11, 19:06

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

Worked for me too, but i don't use one atm. The on-board IDE controller handles things well and is not a bottleneck. Win95 starts within few seconds, which is the biggest perceived delay i experience on that rig so far.

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Re: The World's Fastest 486

Posted on 2022-02-10, 19:40

by

by pshipkov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok, tried briefly this morning 3x60MHz and 3x66MHz on air cooling. --- 200MHz One ADW CPU can POST at 3x66 + 4V, but no BOOT. One ADZ CPU can BOOT. Needs 4V for that. Both don't light up at 3V/5V. No clock divider. Running 1:1. System is not stable. Looks like i will need a trimmer bolted on the …

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Re: The World's Fastest 486

Posted on 2022-02-10, 15:25

by

by pshipkov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Ok, you really missed the important information :) 5v to cpu will affect the cpu lifespan. Live fast, die young. I didn't explore this area enough, but feel motivated now. Will give the 3 200mhz capable cpus here a spin on air cooling and see what comes out of it. But if you slap a low voltage …

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Re: Hardware mod for L1 cache support on Cyrix 486DLC/SXL CPUs

Posted on 2022-02-10, 15:16

by

by pshipkov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There are few 386 motherboards that can handle 50 or even 55mhz base frequency, so you can run sxl2 cpu without clock doubling. This delivers best performance. There is another thread with shared perf metrics for sxl2 and drx2 cpus.

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-10, 08:52

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

I see. So far acetone didnt affect any printed stuff, but your approach is safer. I guess next time I need this stuff acetone will watch from aside only.

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Re: The World's Fastest 486

Posted on 2022-02-10, 08:35

by

by pshipkov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, with LSD I can run 1:1 at 3x66MHz. After saying that I am having a second thought now, but the other day I didnt bother changing the fsb divider jumper, so i think my statement is true unless the board auto-balances it, which I doubt. With umc8881 based boards I need to step down to 1:1/2 …

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-10, 05:09

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

What is your concern ?

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-10, 03:16

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

I use acetone for cleaning that stuff. Btw, remembered something about your IDE2CF adapter. Few times already the floppy cower connector (PSU side) got loose pins that slide back when insert into the male part on the IDE2CF plug. It can be missed sometimes, but started happening often enough with …

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-09, 20:05

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

This is how it works with this old junk. --- Just lights. POST does not complete. It was by accident. I forgot to set the multiplier to 3x and for a moment wondered why out of a sudden the system is hanging. Then noticed it is 4x.

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-09, 17:59

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

Yes - at 180MHz. Edited my post above for clarity. One of the 2.5 LSD boards here seems to behave more stably under extreme conditions. Could be my imagination only combined with random factors as we are splitting hairs by pushing the hardware to its limits and the differences are marginal, but at …

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Re: 3 (+3 more) retro battle stations

Posted on 2022-02-09, 09:10

by

by pshipkov

in Marvin \ System Specs

in Marvin \ System Specs

@chadti99 After good effort with 2 LuckyStar LS-486E rev:D boards and big stack of RAM modules I was unable to get DRAM SPEED = FASTEST (all other BIOS settings on max) to work stably outside DOS interactive graphics. Calling it a day, moving on. EDIT: For clarity - that is for 3x60=180MHz. BTW, …

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Re: Evergreen 486 SuperChip - settings for DIP switch?

Posted on 2022-02-07, 18:58

by

by pshipkov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The best i was able to get on an entirely long-term stable 286 hardware path is posted here . In short: IDE - 4Mb/s Wolf3D (no sound) - 22.9 fps Superscape - 12.8 fps with SXL2 cpu (post linked above in thread, i believe): IDE - 1.5 - 2Mb (depends which test you ask) <- meh, apparently SCSI helps a …

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Re: Evergreen 486 SuperChip - settings for DIP switch?

Posted on 2022-02-07, 04:04

by

by pshipkov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, I need to replace the 154X in my AMI Mark V Baby Screamer + SXL2-66 with a 152X card for those fringe cases of HDD corruption. It is not an easy task because that system multi-boots between Win3.11, w95, NT3.51, and NT4. That's not fun. I would probably rush install the OSes to populate boot …

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Re: Evergreen 486 SuperChip - settings for DIP switch?

Posted on 2022-02-07, 02:03

by

by pshipkov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Sphere478 wrote on 2022-02-06, 10:02: This is exactly the kind of stuff I’m here for. I love it! Good job!!! that is evident from your K6 adventures

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Re: Evergreen 486 SuperChip - settings for DIP switch?

Posted on 2022-02-07, 01:57

by

by pshipkov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I meant 10mb/s. Was typing on a tablet which is error prone for non-standard words. Varying the scsi speed setting between 5-to-10 actually has measurable impact on i/o metrics. Ok so far it looks like SLC is a great cpu upgrade path for 286 system, especially if SCSI is in the mix. SXL climbs a bit …

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