Re: PS/2 keyboard woes
Posted on Today, 13:55
afaik build into main chipset on this one
Re: Trident ISA card picture issues
Posted on Today, 13:14
you could try soldering couple capacitors to DAC supply pins (100uf,1uf and 100nf in parallel) for laughs
Re: Some DOS joysticks keep disconnecting in Windows 98 on Pentium 1
Posted on Today, 13:05
"2MSPS, analog bandwidth is 200kHz" that might just be enough to see whats going on
Re: Some DOS joysticks keep disconnecting in Windows 98 on Pentium 1
Posted on Today, 12:37
It features auto-calibration. I believe it is digital yep, that explains not being able to measure resistance :) it "emulates" potentiometers somewhat similar to how Commodore C64 1351 mouse emulated paddles. Here is someone replicating this mouse with arduino https://c65gs.blogspot.com/2017/11/ …
Re: DVD drive for windows 98
Posted on Today, 12:12
https://en.wikipedia.org/wiki/DVD_region_code … s_and_countries
Re: Help identifying (and possibly fixing) a motherboard
Posted on Today, 12:10
Mel0n wrote on Yesterday, 23:54: Didn't want to remove glue for fear of ripping traces. isopropyl alcohol works great at penetrating between hot glue and whatever its sticking to
Re: PS/2 keyboard woes
Posted on Today, 12:04
Rincewind42 I would try few things -measure voltage at keyboard connector, static and with some kind of a scope during long keypresses generating errors -put a scope on data lines and check frequency, should be in 10-16.7 kHz range, compare to working keyboards -put a scope on data line and see how …
Re: Some DOS joysticks keep disconnecting in Windows 98 on Pentium 1
Posted on Today, 11:13
So the issue is that the faulty joystics beeps with short circuit error and have infinite resistance. -resistance measurement doesnt beep -infinite resistance is the opposite of short circuit But it shows voltage change correctly. is it one of those digital joysticks with actual electronics inside? …
Re: Some DOS joysticks keep disconnecting in Windows 98 on Pentium 1
Posted on Today, 10:47
> For resistance it cannot be measured no matter how you move with the stick ? measure resistance between pins 9-11 9-13 1-3 1-6
Re: Compaq SLT/286 hard drive replacement
Posted on Today, 10:43
Um, yes and no. I do have a "few" 386 motherboards and a prommer, but no space to build up a test bench. The whole home is crowded with stuff at the time. 😅 Anyway, I'll check the ROM labels on the boards. Maybe I'll do some dumps "out of the blue" (do you say so in English) ? just a model number …
Re: Some DOS joysticks keep disconnecting in Windows 98 on Pentium 1
Posted on Today, 10:31
measure pure resistance, test values at extreme positions, compare with fully working joysticks
Re: Substitute Capacitors?
Posted on Today, 09:37
>and the values seem a bit inconsistent electrolytic caps have 10% tolerance to start with What if I tell you guys that my father, who worked with electronics for more than 30 years, never really cared about it? :) - In fact, I had to spell out that ESR acronym to him first, because he didn't …
Re: The Retro Web project - a better stason.org/TH99 alternative
Posted on Today, 09:07
It's in the works, but it requires tiered user accounts Any account, be it vogons, discord, or native is too much user friction. (or even a public submission form) Imo this is the only usable way, slap a captcha for spam prevention for good measure. Track IP/cookie of good/accepted submitters, can …
Re: Compaq SLT/286 hard drive replacement
Posted on Today, 08:42
Jo22 wrote on Today, 06:55: Cool! 😁👍 But wait, didn't AMI BIOS from the late 80s support HDD detection in CMOS Setup? 🤔 Can you find one? Those screenshots are from 1993 bios. Michal would probably love to get his hands on some very early IDE autodetection bios examples.
Re: eBay Experience....
Posted on Today, 07:47
sell in person. hamventions, retro game parties/conventions, flea markets you might change your mind about some meaningless ebay feedback after packing/unpacking car twice, driving couple of hours both ways, and sitting 5 hours in the sun :) what worries me about ebay is just run of the mill fraud, …
Re: 486 motherboard reset signal issue
Posted on Today, 07:40
get a bigger loupe and keep staring at the traces around battery
Re: What retro thin client/terminal for retro gaming?
Posted on Today, 07:26
broken (screen, battery, hdd) laptop from the Pentium3 era
Re: ASUS P4T533-C in need of repair
Posted on Today, 07:04
Those will help whoever will be fixing it: https://www.xwfix.com/asus-motherboard-p4t533-c-1-02-boardview/ https://www.xwfix.com/asus-motherboard-p4t533-c-1-03-boardview/ seeing the lime green ones were 2000uf 6.3V the red ones are most likely 470uf best picture I could find http://www.janiahola.com …
Re: IDE to USB adapter (again)
Posted on Today, 05:43
I would like to hope/imagine that exist USB to IDE adapter chipsets that are legacy (CHS and Large) friendly . I might still have a 40MB WD drive somewhere that I could use to test the adapters that I do have currently (I have more/different ones than I did initially when I first tested for this) . …
Re: Compaq SLT/286 hard drive replacement
Posted on Today, 04:58
to my surprise it takes a 3,5" 40 pin IDE drive we have Compaq (in cooperation with Western Digital Conner) to thank for IDE interface in the first place :) Compaq (&WD) came up with IDE ability to query drive for parameters all the way in 1986! No need for tedious manual configuration by typing …
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