Re: What retro activity did you get up to today?

Posted on 2022-09-18, 22:21

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Desoldered dead battery Dallas RTC from Pentium motherboard. Oh my, spent all evening on that. Surprised, motherboard still alive. I'm still waiting for details for Necroware RTC module - I ordered wrong ICs - they are in much smaller formfactor than required by PCB. So put another Dallas from …

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Re: What retro activity did you get up to today?

Posted on 2022-09-17, 23:25

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Cleaned an old AT PSU. Painted it black, as it will be installed in unusual case with black chassis (though white front panel and that П shaped cover). Installed a new cooler, had to add a resistor - it's powerful but loud. And all of that pain for 25-30 years old stuff, to run it several times and …

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Re: Intel closes Celeron and Pentium brands

Posted on 2022-09-16, 21:26

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Intel 2086? 😀 It should have ended at intel 7986 😁

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Intel closes Celeron and Pentium brands

Posted on 2022-09-16, 21:01

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Seems like new Intel processors will be called.... "Intel processors". At least for mobile, but who knows? https://www.theregister.com/2022/09/16/intel_ … eron_processor/ Luckily, all my retro CPUs are intels, mostly Celerons and Pentiums 😀

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Re: Upgrading L2 cache via COAST module - 0 kb when plugged in

Posted on 2022-09-16, 20:42

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Repo Man11 wrote on 2022-09-16, 19:23: In the future I'd like to upgrade the board with a K6-3 450 with an add on VRM. Does Necroware have a store? He was planning to, but not yet, so I ordered boards (he opensourced gerber files) and components, will try to solder it when everything comes.

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Re: Upgrading L2 cache via COAST module - 0 kb when plugged in

Posted on 2022-09-16, 19:03

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My understanding is 512k is required on boards that you want to put lots of ram into (also more tag ram is needed) in order to avoid slower cached ram memory ranges. Which usually ends up where windows wants to use memory. Probably. I've just read an old post of a man searching for 512K for his …

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Re: Upgrading L2 cache via COAST module - 0 kb when plugged in

Posted on 2022-09-16, 18:59

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So for anybody searching for the Coast module. ASUS P/I-55TP4XE motherboard (rev 2.1) Coast module is Elpina HT-VX ver 3.1 (don't know if it Coast version or board revision). Memory chips are CMEI 61M3232AT-6 I don't know the type of SRAM - there is no datasheet for that chip.

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Re: Upgrading L2 cache via COAST module - 0 kb when plugged in

Posted on 2022-09-16, 18:45

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Congrats! 256K pipeline-burst SRAM should make a significant performance improvement over onboard async. SRAM chips. The COAST "standard" and all of it´s variants can give you hell. Everybody was doing their own proprietary thing to make sure customers bought their (overpriced) modules. Thank you. …

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Re: Upgrading L2 cache via COAST module - 0 kb when plugged in

Posted on 2022-09-16, 17:04

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yay. I found another model something like month ago. Tried it without luck. And only after reading the chip description I saw it's a DRAM module. That standard is VERY strange indeed. So many variations and not so many information. Surely it did not work too but did not burn my motherboard. And then …

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Re: What retro activity did you get up to today?

Posted on 2022-09-15, 22:31

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nice work! From the perspective of the faceplate, it looks almost brand new. Thanks. Just found the same model, in much better shape - something like $55. Still requires brightening of the front panel (that adds very much to overall look as it's the only part we see tbh) and nobody knows if it …

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Re: What retro activity did you get up to today?

Posted on 2022-09-15, 22:03

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

PD2JK wrote on 2022-09-15, 16:53: Commodore 386SX-16 took a vinegar bath. It had some nasty battery goo. Yes, it got revived! Two long beeps + three short beeps. I think it needs a battery. Commodore 386 sounds like a Heresy.

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Re: What retro activity did you get up to today?

Posted on 2022-09-15, 21:36

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Bought this old floppy drive for less than $1. They are pretty rare and expensive in Ukraine now - can cost $30 and $40 being in same state, no guarantee to work. I cleaned it, greased the motor spindle, removed the rust from the top cover (mostly damaged) and painted, retrobrighted the front panel. …

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Re: Bought these (retro) hardware today

Posted on 2022-09-14, 15:14

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

chrismeyer6 wrote on 2022-09-14, 12:09: What brand is the psu? Im pretty sure that the fan is set to exhaust air not as an intake. AOpen AO-300-12APNF

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Re: Bought these (retro) hardware today

Posted on 2022-09-14, 11:31

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Got this amazing PSU for my P4 build. Though AUX connector seems not necessary for my Socket 423 motherboard, I wanted proper PSU for it. And finding one with 6pin AT connector is not an easy task. I have one claimed to be 300W, but it's way too light and has only 4 molex connectors (plus 2 FDDs). …

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Re: Bought these (retro) hardware today

Posted on 2022-09-14, 11:18

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

libby wrote on 2022-09-14, 05:49: Turbo -> wrote on 2022-09-13, 18:06: Got this 8 bit ISA modem? card yesterday. V-LINK VP-894 Looks like a 4 or 8 port faxmodem or voice board. Yeah, that's way to big for an ordinary modem. Even with that type of integration 😀

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Re: SVGA minimum RAM?

Posted on 2022-09-11, 14:45

by

by rkurbatov

in Marvin \ Video

in Marvin \ Video

Forget UniVBE, I think it's Vaporware, it won't work properly with many sophisticated applications. At least not in combination with early ISA VGAs. Had little else than trouble with it. It helped me a lot when I had PCI videocard (DSV6422), that was "upgraded" from VBE 1.2 to VBE 3.0. I liked …

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Re: SVGA minimum RAM?

Posted on 2022-09-11, 11:31

by

by rkurbatov

in Marvin \ Video

in Marvin \ Video

Oh, that's really strange. When I run uvconfig with -m256 param forcing detection of 256KB of memory it said it wouldn't work at all as the card is not supported. While running it again without any params it said that there are 10 modes now supported instead of 6 and 640x400(480) appeared. …

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Re: SVGA minimum RAM?

Posted on 2022-09-11, 10:54

by

by rkurbatov

in Marvin \ Video

in Marvin \ Video

Did somebody manage to run PVGA1A-JK 640x480x256 with UniVBE? I have a strange problem. My videoadapter is detected by UniVBE as 512K even though it has only 256K of RAM. Also, I don't have an option to use 640x480x256 mode, only low-resolution ones (the biggest is 320x480 if memory serves). And …

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Re: What retro activity did you get up to today?

Posted on 2022-09-10, 21:40

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

My first attempt to retrobright. Also, got an old 5.25" for less than $1 - cleaned and greased it - seems working. It's front panel now will stay for a night in my bathroom 😀 Tomorrow will work with a case (and floppy) - try to remove rust and paint it.

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Re: Bought these (retro) hardware today

Posted on 2022-09-08, 20:51

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Celeron 333 arrived today (5x66, 128KB cache, SL2WN, Mendocino A0). It has custom added cooler, don't know if it needs fan at all. It does :) And what if I use ATX fan instead? It wasn't pointing down at times of this CPU but now it does, providing additional airflow. Because I see that this fan …

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