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

Posted on 2022-09-23, 21:56

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Lol. It took me almost 25 years to realize that Pentium II in SECC cartridge is technically a Coast module with CPU on it. To my excuse - I've known about Coast existence only few months ago 😀 So they did not put CPU with cache on a stick, they added CPU to the stick with cache 😀

---

Re: Bought these (retro) hardware today

Posted on 2022-09-23, 21:43

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

stef80 wrote on 2022-09-23, 20:31: First SL2YK arrived today, so far so good: 20220923_222042.jpg 20220923_220112.jpg ... on BH6, cool as cucumber (mid 20s °C) and […] Show full quote First SL2YK arrived today, so far so good: 20220923_222042.jpg 20220923_220112.jpg ... on BH6, cool as cucumber ( …

---

Re: Bought these (retro) hardware today

Posted on 2022-09-23, 05:43

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Every other Asus board that I have owned or set up for someone has worked fine. Some of them are still currently in service after 15 years of daily use. I have owned and installed more Asus boards than any other brand, so I have seen more of those fail than other brands. That's probably the reason …

---

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

Posted on 2022-09-21, 23:30

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

So in the course of a few days of testing and reflashing this thing, I've gone from: 1) boots to CF card but hangs on trying to do anything 2) detects CF card but hangs on boot 3) doesn't detect CF card at all Yay for reverse progress! At this point I'm afraid to try anything further as I suspect …

---

Re: Bought these (retro) hardware today

Posted on 2022-09-21, 23:25

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This is a retro-ish purchase. Took delivery of a TL866II programmer and a bunch of NOS EPROM chips. Going to be replacing the BIOS chips in some 286 machines. I did several replacements and EEPROMs were always working where UV EPROM required. They also require that lamp and quite a long procedure …

---

Re: Strange socket 7 MB connector

Posted on 2022-09-19, 19:19

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Thank you, guys, that was quick 😀 That's why I love PCs of that era - so many standards and companies, so many unknown stuff.

---

Strange socket 7 MB connector

Posted on 2022-09-19, 18:48

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is a Socket 7 motherboard with strange connector sold on our local auction site. The image quality is crappy, I cannot see even the type of the chipset (except for being intel) but socket is definitely Socket 7 with P90 CPU installed in it. https://ireland.apollo.olxcdn.com/v1/files/ …

---

Re: Biostar MB-8500TVX-A with CR2032 & DS287

Posted on 2022-09-18, 22:34

by

by rkurbatov

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

If you don't have desoldering station (like me) try using injector needle. Melt an alloy and put needle into the hole, rotating it. I have manual sucker pump but it simply doesn't work. I managed to desolder one side of the IC, then broke another row of pins and desolder them too. That was painful …

---

Re: Help with PS/2 Floppy drives

Posted on 2022-09-18, 22:25

by

by rkurbatov

in Milliways

in Milliways

Will continue here. I bought 2.88 drive bus powered. Seems like from PS/2. I wanted to use it in one of my builds, probably, will find ED floppies for it (or at least play with ordinary floppies, they can be formatted). There is an adpater for PS/2 systems allowing to connect ordinary floppy drives …

---

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 …

---

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 …

---

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 😁

---

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 😀

---

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.

---

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 …

---

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.

---

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. …

---

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 …

---

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 …

---

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.

---