Re: 3 (+3 more) retro battle stations
Posted on 2021-09-09, 04:07
So now I'm tryna think of a way to hammer the cache in memtest while penciling over the resistors in play until the errors disappear or something.
Re: 3 (+3 more) retro battle stations
Posted on 2021-09-09, 03:24
Well here's some clues about impedence matching, https://www.bourns.com/pdfs/dram.pdf edit: skimming stuff in relation to that, I realised that with high output/input impedences millimeters might become important, and by not setting components direct in the board, like leaving a few mm of leg on a …
Re: 3 (+3 more) retro battle stations
Posted on 2021-09-09, 03:12
Right, maybe they're causing an impedance mismatch on the data lines, like an unterminated SCSI bus, yuck, transmission line theory... crap how do you sort that out... steal ideas from antenna design, quarter wave stub to match it? have to swap 'em out for every bus speed, what's the speed of light …
Re: What was the purpose of the plastic covers on some chips on the IBM HDD PCBs?
Posted on 2021-09-09, 03:00
Another manufacturer was putting full body wetsuits (Or IDK, maybe they were meant to be latex gimp suits) on their drives, so maybe they did it so the salesdroids weren't constantly bugged with "Why come YOUR drives don't have protection?"
Re: Are any of these 486 and early Pentium-class CPUs intetesting?
Posted on 2021-09-09, 02:53
Possibly you can stick that Pentium overdrive in a socket 5 board that otherwise maxes out at 120, but you'd have to check it out. The DX2 overdrive, well, I never saw a point in those, every DX33 board I've met will take a 5V DX2, must be some reason for it's existence, easier for OEM systems? I …
Do I want a Quadro FX 1800???
Posted on 2021-09-09, 02:47
hey ho me hearties, (wait I'm probably a week or so early for that, but it was random.) I spied me some booty on ye high seas *twitch* okay, seriously, I'm over it now, well I seent a shiny. Random parts lot, has a couple of could be useful RAM sticks, ATSC tuner, and a quadro card that looks most …
Re: Have anyone actually gotten hardware damaged due to using old PSUs?
Posted on 2021-09-09, 01:54
Personal experience... One "unknown provenance" 250W ATX blew a puff of smoke out the back at first power up, fans just got time to twitch then it was dead, when connected to a Socket A KT133 board, board 100% okay and powered up fine with the next 250W. Two instances of "slow death" power brownout …
Re: suggesti0ns for a skinny cpu heatsink/fan
Posted on 2021-09-09, 01:23
"Tennmax Lasagna" was one favored by iOpener modders in the oughts, dunno how easy they are to find now. Think the coolers found in trashed laptop P4Ms are gonna be rated about 30W... the DRP versions of P4s might be as high as 88. The DRP Turions will be 35W.. There's an intel stock heatsink for …
Re: Thermal tape ripped CPU die off of substrate
Posted on 2021-09-09, 01:09
Make a shim out of plastic sheet a hair thinner than die height, to protect the next tester.
Re: Early revision ASUS P2B and Coppermine Pentium 3
Posted on 2021-09-08, 20:55
http://tipperlinne.com/p2bmod.htm also some useful info here, though mainly Tualatin focussed... https://www.oocities.org/_lunchbox/index.html
Re: 3 (+3 more) retro battle stations
Posted on 2021-09-08, 20:46
It can be gate capacitance that limits switching speed in transistors. However, with smaller process nodes the areas of the gates are smaller, thus capacitance less. So if new parts are on a smaller process, they should be even cleaner switching than old parts, and thus push further, even rated the …
Re: Can someone explain to me about the capacity of old hard drives?
Posted on 2021-09-08, 20:31
Where you are going to find this most often is on drives that are half platter sizes of the X GB per platter tech in the drive lineup. If you look up the press release and see "These drives are based on 10GB per platter technology" which is something that seems to get boasted about in press releases …
Re: Can someone explain to me about the capacity of old hard drives?
Posted on 2021-09-08, 20:06
Now I had to learn way too much about WD Marvel based drives, for reasons, and can confirm that in the case of some 40GB models, they have all the same internal parts as 80GB versions and 40GB of them is "turned off". However, this being a later tech, there are many more "fudge factors" required to …
Re: How do you send sound to Midi output?.
Posted on 2021-09-08, 19:52
Ima be that guy 🤣 "If you're sending sound to MIDI you're doing it wrong, it wants MIDI commands".... sorry it's a sickness 🤣
Re: Which operating systems work on i586?
Posted on 2021-09-08, 19:50
I don't quite remember whether it was Lubuntu 14 or 16 that had PAE and non PAE releases, but that was the last non-PAE support, next release was PAE only.
Re: Win 3.1 (not the workgroup variety) and winsock explosion :)
Posted on 2021-09-08, 19:33
retro.hackaday.com looks weird, not sure if you got an error page from hostgator, their host I guess, maybe it was down, or it's a redirect that doesn't work. Something else to try http://frogfind.com in view source mode that looks really tame, first gen html, but who knows what trips up this early …
Re: Can someone explain to me about the capacity of old hard drives?
Posted on 2021-09-08, 17:42
Nope,its 3.2gb. Put it on any motherboard, even a modern one, it will be detected as a 3.2gb hd. If it was a 10GB hard drive, it would have CHS settings for up to 30GB. It's 12.7GB for sure if it works with that setting and that capacity can be filled up. Perhaps some have failed to pass internal …
Re: 3 (+3 more) retro battle stations
Posted on 2021-09-08, 14:43
IMO it's all that when, where and how they were binned, if next bin was 10ns when the 15ns was binned, you might be lucky and have chips that can do as good as 10.1 ns, (Or even meet specs for 10 at lower heat and better volts than worst case scenario testing a top tier manufacturer might use) If …
Re: Retro confessions. What are yours?
Posted on 2021-09-08, 14:16
In my first computer which I actually bought with my own money I chose to have an AMD K5PR-166 and at the time I thought it was fast. That's not a huge mistake, since they were probably priced at about the going rate for a P100, which at 116Mhz they just about matched in FPU, but had integer …
Re: Help with old VLSI motherboard
Posted on 2021-09-08, 02:52
Probably one of their PS/ValuePoint series tryna out packard bell Packard Bell.
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