Re: 3 (+3 more) retro battle stations
Posted on 2024-04-13, 23:36
Yes.
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-13, 08:15
Forgot to confirm your question about crystal oscillators. Ebay is littered by them. Brands dont matter. Search for “crystal oscillator”. Can include additional keywords like “dip14” or “full can”. Depends on how far you anticipate to go, consider buying a clock generator. They are more expensive, …
Re: List of VLB IDE Controllers
Posted on 2024-04-12, 20:06
Many here relate to what you wrote, probably with some deviation in the time period. For example: Until early 90ies i perceived the computer as an opaque entity. That progressed into a modular entity. Then morphed into a set of individual components and subsystems (both software or hardware), that …
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-12, 18:52
Next update: both IBM-CPUs are 386! Tested with a FIC-386SC, Rev. A3. Both work at 33 MHz, no one work at 40 MHz. Identified by CheckCPU as "standard 386"; identified by Speedsys as 80386DX (not sure about the correctness of this, maybe they are DX, or maybe SX). In generally, they seems to be " …
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-12, 04:45
Never seen 386 cpus packaged like that. Are they functional ? As for your second question - all crystals work as advertised, except in one instance of extreme overclock. What are you after ? : )
Re: List of VLB IDE Controllers
Posted on 2024-04-12, 03:26
One of my (many...) long term project ideas is to do some benchmarks of a couple of cached controllers (and the fake cache Hornet VL-230 :P ) vs uncached, and to do that with a number of different storage devices (very old&slow HDD, CF card and something truly fast) and on some different systems ( …
Re: List of VLB IDE Controllers
Posted on 2024-04-11, 07:20
Not sure this is a factor that actually affects the SiS 496/497 onboard local storage controller performance. Most SiS 496/497 based boards vary from intermediate to excellent IDE performance. It is much better than UMC UM8881/UM8886 based ones in general. It takes a good VLB IDE or late pci udma-66 …
Re: Video RAM chips for a UMC TK-85C408VGA ISA Video Card?
Posted on 2024-04-09, 07:03
Sometimes is. For example, using RAM interleaving techniques. But on this particular card/chipset that is not the case and your note checks out.
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-08, 21:01
@rasz_pl So, without a crystal the Faraday chipset produces frequency of ~4.11MHz on its own. Unfortunately IDE/FDD extension cards don't work without a crystal, so POST stops after RAM count and keyboard controller check. I don't have crystals that cover the space after 28.636MHz space with enough …
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-08, 16:59
And you still don't own a Voodoo2? I have Voodoo 1 card, not used, and Voodoo 3 in the LSD 200MHz hotrod - fits very nicely there. Tried few times to get energized about Voodoos but doesn't click. I guess my attention is mostly on professional 3D graphics hardware, or consumer products that can …
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-08, 16:02
wait, what? I dont see any other clock sources on board I know. Quite surprising, right ? Wonder if there is a built-in crystal in the big Faraday plate that produces 4.77MHz frequency to CPU in this circumstance. Thinking about this now, i didn't measure that. Will check soon. Only way to measure …
Re: 486 board Young Micro Systems VEGA 486 Green PC
Posted on 2024-04-08, 02:47
Done.
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-07, 22:38
Updated the charts according to the clarification from ChadTi99 and Feipoa. 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 …
Re: Video RAM chips for a UMC TK-85C408VGA ISA Video Card?
Posted on 2024-04-07, 07:24
Try these http://www.o2xygen.com/parts/MM41425608.htm card
Re: Old hardware giveaway thread.
Posted on 2024-04-07, 06:29
Send me your address. Will ship on Monday. Yes, i am in NA.
Re: Old hardware giveaway thread.
Posted on 2024-04-07, 00:17
Must go for shipping price. Ideally the 3 items at once. That DTC SCSI is new in the box. I very gently opened it by making a minimal cut on one side of the plastic wrap - for a brief functionality test.
Re: 3 (+3 more) retro battle stations
Posted on 2024-04-06, 17:43
Look who is back. : ) Thanks for the clarification. Makes sense. Can you suggest such titles ?
Re: List of VLB IDE Controllers
Posted on 2024-04-06, 02:56
The cached transfer speed of BT-410A is epic. Non-cached speed is the deep opposite. Another caching paper tiger, but i admit these complex assemblies are quite interesting.
Re: How to get and validate DMA mode for disks in Windows 3.1?
Posted on 2024-04-04, 21:50
Your comment reminded me of a conversation with PC-Engineer here . Just read my response to his advise to close J5, then looked at other notes i have and indeed - AHA-2840/42A does work with L1 in WB mode. Not sure why it was stuck in my head as a no-no. Should have done the background check than …
Re: List of VLB IDE Controllers
Posted on 2024-04-04, 21:32
I see, you were commenting on the specific integrated silicon. I perceived it differently. Good point about the advertisement meaning regarding competitors.
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