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Re: PC-Chips M321 repair work

Posted on Yesterday, 21:25

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

hope you wake it up eventually. this is one of the finest classic 386 boards. the chipset is one of the fastest clock-to-clock ones, but does not overclock very well. if the board starts ticking, you may consider swapping the clock gen with crystal oscillator. so far all pcb versions i have seen …

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-17, 18:29

in Marvin \ System Specs

in Marvin \ System Specs

In case you see my previous post as an attempt for horse-racing - not the point at all - just a coincidence while we are talking about 386 things here. Couple of days ago these 50ns memory sticks arrived and it was time to give them a try. They can contribute to some performance improvement in OC'ed …

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-17, 02:57

in Marvin \ System Specs

in Marvin \ System Specs

Recently i obtained 4x4Mb 50ns 30pin SIMM modules from a forum member. Put them to good use today with that DTK 386 system. Was able to lower the DRAM wait-state from 2 to 1 cycles. Here are some of the results: Wolf3D: 61.1 fps Doom: 18.03 fps <- !!! Superscape: 34.4 fps PC Player Benchmark (VGA): …

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-16, 21:45

in Marvin \ System Specs

in Marvin \ System Specs

3DS interface upon frame rendering completion is confusing. These two screenshots bring the needed clarity. (these are 3DS R3 render times)

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-16, 15:16

in Marvin \ System Specs

in Marvin \ System Specs

Fixed the image in my previous post (some copy past stuff that was incorrect). Full refresh the page to get the update. Doom - full screen with status bar. Wolf3D - yes the timedemo. there is something a test.bat file in the version i have. I just run this. PCBench - VGA mode only. WinTunne2 - full …

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-15, 04:32

in Marvin \ System Specs

in Marvin \ System Specs

My performance numbers are somewhere on vogons for the Mark V Baby Screamer w/SXL2-66. Exactly the reason i made the post above. :) I can re-run them if you wish. I know I have pages and pages of data tables for 386 benchmarks with different CPUs. The Baby Screamer is ISA-only. If you have a …

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-15, 00:04

in Marvin \ System Specs

in Marvin \ System Specs

For quite some time i have been looking at who-is-who in the world of 386 mostly driven by personal curiosity with the end objective to identify existing, or preferably - build the fastest, fully stable 386 PC. Motivation has been coming and going in waves, resulting in periods of varying activity. …

Re: Tandy 1000 TL/2 + Upgrades

Posted on 2021-04-09, 03:51

in Marvin \ System Specs

in Marvin \ System Specs

Great stuff. Was always curious about these Tandies. Never owned one - not available in my region back then. That last Windows 3 screenshot is great. Today my "Hello World!" executable has bigger memory footprint. 😁

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-09, 01:37

in Marvin \ System Specs

in Marvin \ System Specs

Asus ISA-386SIQ A classic late model 386 motherboard, based on 486 class chipset SiS 461 - made me curious how this will work. SiS 461 is pretty decent early 486 chipset - not too fast, not too slow - should be a good high-end fit for 386 system. The board is basically jumper-less. Supports up to …

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-05, 18:54

in Marvin \ System Specs

in Marvin \ System Specs

Cannot say if this change is on a logical or electrical level. But is deterministic - SB16 off - unstable. On - stable. Didn't try with other cards to see if it is related to specific type of extension card, or ISA sloth/pins in general.

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-05, 04:02

in Marvin \ System Specs

in Marvin \ System Specs

Yes, is the drill. Usually reduction is the way to improved stability, but this one was interesting. Not big on WD drives either. Had Caviars back in the day - rumble as thunder, run like a snail. Later those 10k Raptors came and were big deal, but many of them had the lifespan of a gnat.

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-04, 21:42

in Marvin \ System Specs

in Marvin \ System Specs

Agreed. --------------- Last night i moved some of the junk around, to compress the space it occupies. Saw this Texas Instruments 486DX2-80 CPU and two lingering mechanical hard drives. Decided to give them a spin in that 486DX2-66 PC in a cardboard case from several posts ago, with the intention to …

Re: The World's Fastest 486

Posted on 2021-04-03, 18:19

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

But not clear what is the highest score with a socket 3 cpu of any kind Obviously that would be POD. With some modding, 125 Mhz is probably possible. To use the sport car analogy - can it do more than one lap ? Well, I've tested even Quake 3 on 180 Mhz 486 , so it's possible to achieve. Thanks. I …

Re: The World's Fastest 486

Posted on 2021-04-03, 14:02

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Both are good sport. My only concern (and maybe complain) is the lack of clarity around "how real the computer used in the test is". Is it a one trick pony - minimal configuration and potentially not completely / long term stable, or is the real deal - fully maxed out system running with full gear. …

Re: Abit AB-PB4 twin paradox

Posted on 2021-04-03, 07:43

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, these boards are not very common. There is a landmark 6 screengrab included. Chars/ms feels very misleading for non XT PC. 😀 PB4 shows great performance in the more relevant tests. Especially in some of the interactive graphics ones such as wolf3d, Doom and WinTune2. Doom hits 63 fps !

Re: Abit AB-PB4 twin paradox

Posted on 2021-04-03, 05:29

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is interesting and weird. Looks like a bugged release. Shared info about one of these boards here. It is a fast one. Linking it for improved sampling.

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-03, 03:52

in Marvin \ System Specs

in Marvin \ System Specs

This board has no option in the BIOS for "shadow BIOS" and CPUID. Tried again couple of SpeedSys flags. Same result - SS pauses right after displaying "Cyrix". Feels like it cannot detect the CPU speed. It does not bother me. I don't pay much attention to these synthetic benchmarks anyway. 😀

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-02, 17:51

in Marvin \ System Specs

in Marvin \ System Specs

I am pretty sure i tried that. At some point everything was turned off with most increased wait states, etc. The precise answer is that i can get SpeedSys to display with readable text, but it hangs when tries to identify CPU - shows "Cyrix" and locks. The board is very stable. Everything else i …

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-02, 06:09

in Marvin \ System Specs

in Marvin \ System Specs

@Anonymous Coward Ok, so i am not the only one seeing this. Good to know. @feipoa The CPU Register Settings Bible is a well known source of information. The problem is related to this specific motherboard/cpu, regardless of control registers (tried all the combination and other things). Cannot …

Re: 3 (+3 more) retro battle stations

Posted on 2021-04-01, 21:38

in Marvin \ System Specs

in Marvin \ System Specs

This is what i know (and don't know) about the jumpers. Hope it helps. Apparently these boards were available in Australia. Remember at least 4-5 references related to your region.

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