Re: Jumper table needed
Posted on 2021-10-22, 14:30
Isn't it obvious from the printing near the jumper block marked "Jumper setting"? Very nice card btw 😀 Edit: The manufacturer "Startech" is well known and reputed, still exists 😀
Re: Old PSU - dark residue (glue?)
Posted on 2021-10-22, 13:58
Is this just just old glue that's turned dark? It looks almost burned. It is burned. This dark brown is not "natural". The smoke condensation is evident, like the extremely high temperatures that made this (quite heat-resistant) plastic melt and deform. So I suppose that this unit has not been used …
Re: If you could only have two builds to span…
Posted on 2021-10-22, 02:58
I’m beginning to think it’s mighty unfair to only limit ourselves to just two builds in this timeframe. Three or four on the other hand… You are right, the Macs shouldn't be forgotten. But, when I played a bit with my last Mac today, an annoying fishy smell filled up my flat. I guess I'll get rid …
Re: PC switches off immediately after turning on
Posted on 2021-10-22, 02:38
This is impressing... that PSU boasts 25A on 12V. I guess I am not the only who hopes that you'll post a photo of the insides 😀 BTW... this name sounds so similar like "Toxin"... Scary!
Re: For your amusement: SIMMs with "interesting" design
Posted on 2021-10-21, 20:40
This thread made aware that there is a brand well associated with "special modules" of this kind. Just look at the "Actcts" modules here, most of them are quite "interesting". As I have some issue with abused Digital Equipment RAM modules, I'll ask the seller for a comment, too.
Re: Trying to understand 30pin simm memory modules capacity, please join if you can help.
Posted on 2021-10-21, 20:33
mkarcher wrote on 2021-10-21, 18:02: For your amusement: SIMMs with "interesting" design . Just got curious about "Actcts" and did a google search. There are quite some variants of these "special Actcts" modules available for purchase here.
Re: PC switches off immediately after turning on
Posted on 2021-10-21, 17:09
That plus with time the bearings get worse so it'll have to push even more to spin the disks up. If the motor controller fails it will most likely happen when powering the system on or waking the drive from sleep. Combine this with high ripple on the PSU and people will wonder why HDDs die in …
Re: TERRIBLE NEWS!
Posted on 2021-10-20, 11:05
It's an optimization guide for developers for coding their games to take advantage of the new architecture, ie not news. With some technical details that seem too hot to be viewed by the public, be it only to debunk the alleged "FUD"... If Denuvo infected games don't work on these new cpus (that's …
Re: TERRIBLE NEWS!
Posted on 2021-10-20, 10:56
DosFreak wrote on 2021-10-20, 10:01: Sigh, FUD. We'll see. Intel definitely released and then quickly retracted the "Alder Lake developer guide". So there is almost definitely something fishy, like the fake Spectre/Meltdown microcode "updates" that almost nobody noticed.
Re: Diagnosing a short in a Pentium 2 Slot-1 system
Posted on 2021-10-20, 10:38
Actually, as the OP said, that is just the camera not picking up the refresh of the LEDs right. As far as I know, all 4 POST card ids are being displayed correctly, the camera just doesn't capture them. oops, my bad :) Need more :coffee: My gut feeling says it's the chipset or the PSU which doesn't …
Re: Diagnosing a short in a Pentium 2 Slot-1 system
Posted on 2021-10-20, 08:18
As for why I was thinking it was a short, the auto-starting of the power supply reminded me of something like this, https://www.instructables.com/How-to-power-up-an-ATX-Power-Supply-without-a-PC/ but I haven't checked if there is continuity between these pins on the motherboard. I'll try that next …
Re: If you could only have two builds to span…
Posted on 2021-10-19, 21:35
Yes, this is a challenge... ...trying to cover a) the 16-32bit era of 1981 to 1994 and b) the 32/64 bit era from then on to ~2010 in only two computers, to have the real feeling with real hardware. a) I built a potentiometer-controlled oscillator 2-33 MHz for 486, in a 5.25" cage, with nifty speed …
Re: MS-DOS 7 vs 6 - Are there incompatibilities to know about?
Posted on 2021-10-19, 11:49
Yep, I've seen that a certain version of Microsoft Word for DOS requiring SHARE. If I remember correctly, I think back then I was able to load SHARE using SETVER on DOS 7 (resp. W9x). ... MEMMAKER.EXE. Using that, I was able to achieve much better results with conventional memory than with my own …
Re: Do anyone know how UniVBE detects that its already loaded?
Posted on 2021-10-19, 00:20
Never used borland c++. Didn't see any reason to do so, always worked with MSC back then. Maybe BCC has some keywords like _near, _far, _huge etc, that make it behave like you expected? (See this, search for "_far")
Re: Trident TVGA8900D - corrupted video output
Posted on 2021-10-19, 00:00
Umm, you wrote that it worked for a moment... Maybe use ceramics instead of film caps, and it is no sacrilege to use higher capacitances, too, like 0,22uF. And these vertical bars might also indicate fluctuations of the DAC output because of insufficient decoupling. Have solved such often the same …
Re: Crazy overkill build ideas post here: Oldest motherboard that supports server ECC registered SDRAM?
Posted on 2021-10-18, 19:27
snufkin wrote on 2021-10-18, 19:16: If you wanted, it might be possible to convert the registered to unregistered: Converted registered SDRAM wow, cool! Would be awesome if such could be done to convert DDR3 RDIMMs into UDIMMs (without SPD reprogramming)... but I guess this is near to impossible.
Re: Trident TVGA8900D - corrupted video output
Posted on 2021-10-18, 19:20
Yes, there are many causes why old borderline electronics suddenly show issues. Maybe a very little more bus stress, maybe a bit more ripple because of PSU decay, heating turned on, or whatever. What you did seems to at least show that the RAMs are not the issue. I have solved this typical video RAM …
Re: Crazy overkill build ideas post here: Oldest motherboard that supports server ECC registered SDRAM?
Posted on 2021-10-18, 19:15
The sad thing with this is that the professional machines tend to get scrapped because they are not really home-friendly. For example, the parity RAMs I recently bought for my 486 probably have been brutally scavenged from a nice Alpha machine, which possibly did more than only NMI halt on parity …
Re: Trident TVGA8900D - corrupted video output
Posted on 2021-10-18, 19:05
I didn't take a close look, just supposed because of the placement of the holes. You really want to make sure that you connect Vcc and Vss(ground) on the shortest way possible, to reduce/avoid voltage dips that might result in bad data reads/writes. Usually this means placing a .1uf ceramic between …
Re: Trident TVGA8900D - corrupted video output
Posted on 2021-10-18, 18:00
Hi all, I have a Trident ISA video card which has always been a bit glitchy. That was bought as "faulty" and I believe all I found was a capacitor that needed replacing. It's been working since, even though on some graphic the output is "striped", see picture below. The decoupling caps that are …
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