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What retro activity did you get up to today?

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Reply 28440 of 28942, by Karbist

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I was checking a box full of salvaged Geforce FX 5500 cards and saw these 2 fake cards:

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some kid back in Geforce FX days was wondering why his game runs like crap. 🤣

Reply 28441 of 28942, by PD2JK

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Wow. And this works? It looks more expensive than a 'real' card.

i386 16 ⇒ i486 DX4 100 ⇒ Pentium MMX 200 ⇒ Athlon Orion 700 | TB 1000 ⇒ AthlonXP 1700+ ⇒ Opteron 165 ⇒ Dual Opteron 856

Reply 28442 of 28942, by BitWrangler

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Karbist wrote on 2024-09-30, 11:26:
I was checking a box full of salvaged Geforce FX 5500 cards and saw these 2 fake cards: […]
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I was checking a box full of salvaged Geforce FX 5500 cards and saw these 2 fake cards:

The attachment front.jpg is no longer available
The attachment back.jpg is no longer available

some kid back in Geforce FX days was wondering why his game runs like crap. 🤣

I'd say "looks" like crap, because 9000 could maybe get as good or better frame rates in DX8 as the FX 5500 got in DX9... on a pure DX8 game though an FX 5500 should be faster.

I would never have thunk they would have tried to get away with that though, it's gotta be a bit obvious when things report radeon when you think you bought a geforce.

Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.

Reply 28443 of 28942, by Karbist

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BitWrangler wrote on 2024-09-30, 11:44:

I would never have thunk they would have tried to get away with that though, it's gotta be a bit obvious when things report radeon when you think you bought a geforce.

These fake cards came with driver cds with modified device name, for example Redeon mobility 9000 renamed to Geforce FX 5500.

Reply 28444 of 28942, by BitWrangler

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I realise they would superficially reskin the drivers and all, but what happens if you run 3DMark?

Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.

Reply 28445 of 28942, by Thermalwrong

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Karbist wrote on 2024-09-30, 11:26:
I was checking a box full of salvaged Geforce FX 5500 cards and saw these 2 fake cards: […]
Show full quote

I was checking a box full of salvaged Geforce FX 5500 cards and saw these 2 fake cards:

The attachment front.jpg is no longer available
The attachment back.jpg is no longer available

some kid back in Geforce FX days was wondering why his game runs like crap. 🤣

That's cool, I bet those chips came from early lead-free solder laptops like the IBM Thinkpad T42 and probably Dell Latitude D600. They probably went to china as e-waste in droves since the lead-free solder didn't last too well, but the chips on them still had 'some' value 😀

Reply 28446 of 28942, by thp

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GemCookie wrote on 2024-09-27, 15:50:

A month ago, my K6-2 system suddenly stopped POSTing,
—————8<—————
Sigh. And they say Linux breathes new life into old hardware...

Funny thing, the last few days I ended up building Linux 6.11 for i586/K6-2, booting it with loadlin from within DOS into a busybox initrd and from there initialized partition which now contains a rootfs built by buildroot (again, i586, as the K6 is missing i686 instructions like CMOV that were only added on the Athlon, but the Pentium Pro and Pentium 2 had). I also added qemu user-space emulation binaries to run armhf and x86_64 Linux binaries, but haven’t tested that yet.

Long story short, K6 is kind of a pain in the sense that it‘s not a full i686, which would mean one could use more mainstream 32-bit x86 distros (not counting SSE, which appeared on the PIII Katmai and Athlon XP).

Reply 28447 of 28942, by thp

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ratfink wrote on 2024-09-28, 23:58:

Completed my hardware downsizing exercise so that what I've got left makes more sense and might actually be used one day (or is reasonable spares and alernatives).

[So, off to ebay to buy some more then....]

Congratulations! Did you manage to sell most stuff or just trash stuff that nobody is interested in? For low-value items, seems like it‘s not worth the hassle, but trashing stuff that would otherwise work feels wasteful, but at least it wouldn’t take up mental (and physical) space.

Reply 28448 of 28942, by PcBytes

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Karbist wrote on 2024-09-30, 11:26:
I was checking a box full of salvaged Geforce FX 5500 cards and saw these 2 fake cards: […]
Show full quote

I was checking a box full of salvaged Geforce FX 5500 cards and saw these 2 fake cards:

The attachment front.jpg is no longer available
The attachment back.jpg is no longer available

some kid back in Geforce FX days was wondering why his game runs like crap. 🤣

That wouldn't be their first feat. Their Radeon 9600 cards used Mobility 9700 cores. (which would basically land you a cheaper-than-retail 9600XT 🤣. Good luck having it not break with artefacts due to poor build quality doe.)

"Enter at your own peril, past the bolted door..."
Main PC: i5 3470, GB B75M-D3H, 16GB RAM, 2x1TB
98SE : P3 650, Soyo SY-6BA+IV, 384MB RAM, 80GB

Reply 28449 of 28942, by BitWrangler

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thp wrote on 2024-09-30, 17:16:
GemCookie wrote on 2024-09-27, 15:50:

A month ago, my K6-2 system suddenly stopped POSTing,
—————8<—————
Sigh. And they say Linux breathes new life into old hardware...

Funny thing, the last few days I ended up building Linux 6.11 for i586/K6-2, booting it with loadlin from within DOS into a busybox initrd and from there initialized partition which now contains a rootfs built by buildroot (again, i586, as the K6 is missing i686 instructions like CMOV that were only added on the Athlon, but the Pentium Pro and Pentium 2 had). I also added qemu user-space emulation binaries to run armhf and x86_64 Linux binaries, but haven’t tested that yet.

Long story short, K6 is kind of a pain in the sense that it‘s not a full i686, which would mean one could use more mainstream 32-bit x86 distros (not counting SSE, which appeared on the PIII Katmai and Athlon XP).

That's odd, I think I was running i686 kernels on K6 class in noughts or so, and not having a problem, though I think they could detect and detour around lack of cmove then. Then I guess since then there wasn't the i686 lite option or something, or some meathead intel fanboi excommunicated AMD on purpose, because he only deemed tualatin up worthy of still running that code or something.

Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.

Reply 28450 of 28942, by ratfink

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thp wrote on 2024-09-30, 17:20:

Congratulations! Did you manage to sell most stuff or just trash stuff that nobody is interested in? For low-value items, seems like it‘s not worth the hassle, but trashing stuff that would otherwise work feels wasteful, but at least it wouldn’t take up mental (and physical) space.

Sold some bits on amibay, some on ebay, gave some things away on freecycle and amibay... I haven't thrown anything out this time round but what I wanted was "less" and there was a bunch of stuff I didn't need any more so some went and I've kept what didn't go.

Reply 28451 of 28942, by PC@LIVE

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Yesterday I replaced the gear shift gaiter, now worn (quite a bit), the car is not very old, but the final result makes it a little younger, a fairly simple job which requires dismantling the knob, all quite simple, for me, even if it was the first time I had done such a job.

AMD 286-16 287-10 4MB HD 45MB VGA 256KB
AMD 386DX-40 Intel 387 8MB HD 81MB VGA 256KB
Cyrix 486DLC-40 IIT387-40 8MB VGA 512KB
AMD 5X86-133 16MB VGA VLB CL5428 2MB and many others
AMD K62+ 550 SOYO 5EMA+ and many others
AST Pentium Pro 200 MHz L2 256KB

Reply 28452 of 28942, by jtchip

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BitWrangler wrote on 2024-09-30, 17:43:
thp wrote on 2024-09-30, 17:16:

Funny thing, the last few days I ended up building Linux 6.11 for i586/K6-2, booting it with loadlin from within DOS into a busybox initrd and from there initialized partition which now contains a rootfs built by buildroot (again, i586, as the K6 is missing i686 instructions like CMOV that were only added on the Athlon, but the Pentium Pro and Pentium 2 had). I also added qemu user-space emulation binaries to run armhf and x86_64 Linux binaries, but haven’t tested that yet.

Long story short, K6 is kind of a pain in the sense that it‘s not a full i686, which would mean one could use more mainstream 32-bit x86 distros (not counting SSE, which appeared on the PIII Katmai and Athlon XP).

That's odd, I think I was running i686 kernels on K6 class in noughts or so, and not having a problem, though I think they could detect and detour around lack of cmove then. Then I guess since then there wasn't the i686 lite option or something, or some meathead intel fanboi excommunicated AMD on purpose, because he only deemed tualatin up worthy of still running that code or something.

The K6 was never even partly i686, which is defined as requiring the CMOV instruction (introduced with the Pentium Pro) and sometimes long NOP (which Debian 12 made compulsory, Debian 9-11 only required CMOV). I think it was so named to differentiate it from the K5, given that is was derived from NexGen's Nx686 and re-engineered for Socket 7.

Reply 28453 of 28942, by Dorunkāku

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I made a ghetto 'VRM' for a FIC 486-GIO-VT2 out of two jumper caps and a bridge rectifier. The cost in parts is less than 1 Euro and it works surprisingly well with a 5x86 running at 160Mhz.

The parts I used are two open ended jumper caps and a GBU4J bridge rectifier. The two parallel double diode junctions drop the voltage supplied by the powersupply by 1,55 Volt. With the powersupply I use this results in a core voltage of 3,55 Volt. The airflow from the CPU cooler keeps the bridge rectifier cool enough.

Reply 28454 of 28942, by zuldan

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Replaced the voltage regulators on all my Roland MT-32’s. It’s really simple, no soldering required.

1) Open the case 2) Unscrew the regulator 3) Unplug 4) Install new regulator.

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The original regulators were running at 4.89v, 5.3v and 5.4v. All the new regulators are running at 5.07v. Perfect! Hopefully these MT32’s will last another 30+ years.

The new regulator has some nice features. Not sure if the old regulators have the same.

Features
• Output current up to 1.5 A
• Output voltage of 5v
• Thermal overload protection
• Short circuit protection
• Output transition SOA protection
• 2 % output voltage tolerance (A version)
• Guaranteed in extended temperature range (A version)

Here is a link to it https://au.mouser.com/ProductDetail/STMicroel … %2F8mWnQg%3D%3D

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Put the original voltage regulators in storage.

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Reply 28455 of 28942, by RetroGamer4Ever

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If I had the skills, I'd buy up the old synth hardware modules and refurb the electronics/electricals, so that they can keep on ticking and be enjoyed for at least another generation. I know it's sort of a waste, but there's just something about the physical presence of hardware, that box of "stuff" that does what the other boxes don't do.

Reply 28456 of 28942, by PC@LIVE

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Dorunkāku wrote on 2024-10-01, 08:33:

I made a ghetto 'VRM' for a FIC 486-GIO-VT2 out of two jumper caps and a bridge rectifier. The cost in parts is less than 1 Euro and it works surprisingly well with a 5x86 running at 160Mhz.

The parts I used are two open ended jumper caps and a GBU4J bridge rectifier. The two parallel double diode junctions drop the voltage supplied by the powersupply by 1,55 Volt. With the powersupply I use this results in a core voltage of 3,55 Volt. The airflow from the CPU cooler keeps the bridge rectifier cool enough.

This is very interesting, I imagine that the motherboard is 5V and has no provision for a voltage reducer, unfortunately I am not a technician, and I don't really understand how you connected the rectifier bridge, and if it is possible to do it in other MB 486 5V, practically you could upgrade a MB from 66-80 MHz maximum, to 100-120-133 or even even 160 MHz.

AMD 286-16 287-10 4MB HD 45MB VGA 256KB
AMD 386DX-40 Intel 387 8MB HD 81MB VGA 256KB
Cyrix 486DLC-40 IIT387-40 8MB VGA 512KB
AMD 5X86-133 16MB VGA VLB CL5428 2MB and many others
AMD K62+ 550 SOYO 5EMA+ and many others
AST Pentium Pro 200 MHz L2 256KB

Reply 28457 of 28942, by rasz_pl

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PC@LIVE wrote on 2024-10-01, 16:07:

This is very interesting, I imagine that the motherboard is 5V and has no provision for a voltage reducer, unfortunately I am not a technician, and I don't really understand how you connected the rectifier bridge

He plugged it to a connector called PS3V 😀 very much a socket for optional 3V voltage reg.

https://github.com/raszpl/FIC-486-GAC-2-Cache-Module for AT&T Globalyst
https://github.com/raszpl/386RC-16 memory board
https://github.com/raszpl/440BX Reference Design adapted to Kicad
https://github.com/raszpl/Zenith_ZBIOS MFM-300 Monitor

Reply 28458 of 28942, by DarthSun

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Magical setup Am2+. Win98 3DM01 a little tuning.
Dos and XP tests will come, and I will link to the next result table.
Old optimalize of future machine after next, live!

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The 3 body problems cannot be solved, neither for future quantum computers, even for the remainder of the universe. The Proton 2D is circling a planet and stepping back to the quantum size in 11 dimensions.

Reply 28459 of 28942, by BitWrangler

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Cracked open the EGA monitor I got on Saturday to fix the power cord... I mighta been scammed guys, looks like it was made last month not 1988... just kidding, very clean.... had to quit for now, took wayyyy too long to get the cover off, was hung up on something, but I just wanted to jiggle it gently, old plastic etc etc, so it finally came loose and I still can't tell what it got stuck on, maybe just a cable tie on one of the reinforcement ribs or something. Anyway, that made my shoulders too shaky to risk the wrath of the angry pixies, so just picked at it a bit and will have to finish up tomorrow.

Unicorn herding operations are proceeding, but all the totes of hens teeth and barrels of rocking horse poop give them plenty of hiding spots.