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Re: Digital Venturis FX5150s

Posted on 2022-10-24, 17:21

I've been tinkering with it this evening and made a few more upgrades. Cache P1040025.jpeg It is a bit of a mystery to me on how exactly this PC mages it's caches... The motherboard does have 3 chips of 128k, so a total 384k of cache memory available. This cache is referred by BIOS as Shadow RAM and …

Re: Digital Venturis FX5150s

Posted on 2022-10-24, 10:24

My Prioris LX doesn't turn on reliably either and when it does turn on, it doesn't reliably stay on for more than a few minutes. My current assumption (hope) is bad capacitors in the power supply - I'll recap it when I've got the time along with a pair of AlphaStation 200s and a few SPARCstations. …

Re: Digital Venturis FX5150s

Posted on 2022-10-24, 08:20

After learning a lot about DEC PC's, I'm very happy that I've posted here about mine. Originally I did not think much of it and was planning to maybe sell it, if not just to free up some space. But now, I'm kind of inclined to keep it! Well, at the very least, I would love to build it properly. …

Re: Digital Venturis FX5150s

Posted on 2022-10-24, 07:49

I'm always a bit nervous about my VT220 - the thing is so old and I use it so infrequently (its been a few years now) that I'm always worried it will go bang when I turn it on next. I agree the amber phosphors are best though - white just isn't quite right. But here is my VT520 hooked up to a linux …

Re: Digital Venturis FX5150s

Posted on 2022-10-23, 17:27

Here is my Celebris GL 5133ST with onboard video (Matrox), SCSI (Adaptec), Ethernet (Digital), and Audio (Crystal) which is pretty weighty, though nothing compared to those two AlphaServer 4100s: Lovely tower, kind of wish that mine would also have a front grill like that and that Celebris badge …

Re: Digital Venturis FX5150s

Posted on 2022-10-23, 17:21

I find their non-PC gear more interesting though. Here is my MicroVAX 3500 with the front cover off - its got a bit more gravity but it also has wheels. This machine was new in 1988, it has 32MB of RAM and a 22MHz CVAX CPU. It supports up to 48 text terminals via its three CXA-16 serial multiplexor …

Re: Digital Venturis FX5150s

Posted on 2022-10-23, 17:18

If you need drivers and manuals for Digital PC products, I've got a mirror of the old support site . Dude! You rock! That's an awesome resource! Looks like my hunch was right, it originally had an ESS Audio card with 3D Spatializer, so most likely ES1878 or simmilar. Anyway, thanks again! Very much …

Re: Digital Venturis FX5150s

Posted on 2022-10-23, 17:02

Wow this thread is somehow turning into a who has a bigger DEC[K] thing :smile: Thank you very much for a very interesting read on the Digital Equipment stuff davidrg . Great eye opener indeed. My appreciation for this PC has grown quite a bit! Those VT2XX terminals seem to be especially nice, would …

Re: A journey, a confessional, a Dell

Posted on 2022-10-23, 16:45

Indeed very strange behavior of the sound card for not disconnecting the speakers when line out is connected, but then I have seen a few laptops that behaved this way. Sometimes they just had a separate mixer channel for speakers and it might just be the matter of finding a proper mixer utility for …

Re: A journey, a confessional, a Dell

Posted on 2022-10-23, 07:14

Greetings! Nice story mate, I sure can share the sentiment of being born in 1984, then somewhere in mid 90s getting a NES clone as my first PC of sorts. All that stuff about non-cool kids having fun is so familiar. Haha. Up until 2000s I've only messed with PC's on paper as my family could not …

Re: Digital Tank

Posted on 2022-10-21, 21:04

Then the upper part of the motherboard slides into the case by using a system of rails. Quite interesting and unique, it was also possible to easily upgrade a motherboard to a slightly newer one, which also featured SD-RAM slots and USB controller and a Chipset more optimized for an MMX CPU. But …

Re: Digital Tank

Posted on 2022-10-21, 20:50

As far as I know, these came originally with Pentium non-MMX CPU's and model FX5150 has a coded CPU frequency, that shows it was originally equipped with a 150Mhz CPU. Which I did not have, but weirdly enough, someone just came and gave me an Intel Pentium 150Mhz CPU as a present! What are the odds! …

Digital Venturis FX5150s

Posted on 2022-10-21, 20:28

A little while back I've got remains of this Digital Venturis FX5150 P1030976.jpeg This is an interesting tank of a computer. So heavy that I can barely lift it, real nice computer for a much needed work out :muscle: I wish I could tell something about Digital brand, but the only stuff I know is …

Re: Pentium Katmai Showoff

Posted on 2022-10-21, 19:47

Here's a photo of the guts. I'm not experienced with electronics enough to know if anything looks badly designed unfortunately. Wow this thing is packed! Seems to be quality unit (at least capacitors are of high quality). But it is a single rail design type, so most of it's efficiency and power …

Re: Pentium Katmai Showoff

Posted on 2022-10-21, 17:47

I'd rather buy something like an FSP400-60GLC or even something from Seasonic or Delta and do maintenance on that. I actually tend to like FSP and had very pleasant experience with APN series and their very good reliability (sold quite a lot of these to many clients without a single failure), they …

Re: Pentium Katmai Showoff

Posted on 2022-10-21, 15:38

Well this build pulls over 80W from the wall, so yes, modern PSU's would still handle it, but in my actual experience, systems like this one tend to get close enough to the maximum 3.3/5V rail power (it's around 100Wats on better PSU's) and thus transistors then heat well enough to trigger high fan …

Re: Pentium Katmai Showoff

Posted on 2022-10-20, 20:53

Fine, if my retro PC is dead, I'll have less junk, win/win. Joking aside, I find this kind of recommendation a bit of a BS, since even new PSU's are really the same Russian roulette, especially today. It sounds like snake oil advice, generally it won't hurt, yes, but in practice, it's kind of …

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