Re: Documentation Hunt -- Micro/Sys Motherboard and Graphics Card, Ampro Little Board Motherboard

Posted on 2022-10-31, 11:14

by

by starhawk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Good news and bad news. The bad news first. NOTHING on the MPC204-1 video card. I'm gonna have to reverse engineer pinouts there. The good news? Full docs on the SBC3386EX. The PDF is, to put it kindly, an absolute MESS, but it's usable. Every PDF page is split into an even-numbered and an odd- …

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Re: Documentation Hunt -- Micro/Sys Motherboard and Graphics Card, Ampro Little Board Motherboard

Posted on 2022-10-22, 03:41

by

by starhawk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Tickler sent. No reply. Not surprised.

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Re: Documentation Hunt -- Micro/Sys Motherboard and Graphics Card, Ampro Little Board Motherboard

Posted on 2022-10-19, 01:46

by

by starhawk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Micro/Sys has advised me that spelunking through the specs drawer will take roughly a week "to verify the configuration of parts" I have. Pffft. I'll report back if they don't get lost in there. Haven't heard back just yet. Color me unsurprised. If I've not heard anything by Thursday, I'll send em …

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Re: Documentation Hunt -- Micro/Sys Motherboard and Graphics Card, Ampro Little Board Motherboard

Posted on 2022-10-15, 10:27

by

by starhawk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Micro/Sys has advised me that spelunking through the specs drawer will take roughly a week "to verify the configuration of parts" I have. Pffft. I'll report back if they don't get lost in there.

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Re: Documentation Hunt -- Micro/Sys Motherboard and Graphics Card, Ampro Little Board Motherboard

Posted on 2022-10-12, 15:56

by

by starhawk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yep, that's the right docs for the Ampro board... and, guess what, I *JUST* heard from Micro/Sys. Asked me for serial #s 🤣. We'll see where that goes, I suppose...

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Re: Documentation Hunt -- Micro/Sys Motherboard and Graphics Card, Ampro Little Board Motherboard

Posted on 2022-10-12, 10:18

by

by starhawk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That looks VERY useful re the LB/386SX II -- I'm doing something else RN but I'll check in a few to be sure, but I think that's what I've been looking for. Re the Micro/Sys stuff... that's the marketing flyer I alluded to earlier. Good for selling systems, but only barely enough useful info so you …

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Re: Documentation Hunt -- Micro/Sys Motherboard and Graphics Card, Ampro Little Board Motherboard

Posted on 2022-10-12, 04:57

by

by starhawk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Please...?

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Documentation Hunt -- Micro/Sys Motherboard and Graphics Card, Ampro Little Board Motherboard

Posted on 2022-10-11, 12:51

by

by starhawk

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Hello! Looking for some info on two motherboards and one PC/104 graphics card. None of these have useful info on Google. One manufacturer no longer really exists, and the other one doesn't appear to want to talk to me, because I'm not a huge corporation. The first is an Ampro Little Board of some …

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-10-11, 12:34

by

by starhawk

in Marvin \ Video

in Marvin \ Video

starhawk wrote on 2022-09-13, 16:48: Interesting. Didn't have much tech info, but... interesting. TDA1170N repair appears successful; operational testing will commence after lunch. Broke instantly 🙁

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-09-13, 16:48

by

by starhawk

in Marvin \ Video

in Marvin \ Video

Interesting. Didn't have much tech info, but... interesting. TDA1170N repair appears successful; operational testing will commence after lunch.

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-09-11, 05:40

by

by starhawk

in Marvin \ Video

in Marvin \ Video

Got the brightness pot sorted, and guess what? Did a preemptive multimeter check between power and ground, just to be on the safe side... I swear it was fine before I pulled it, cakewalk, right? NOPE. 34 ohms between power and ground :( this miiight be a while, folks. Fault traced to a weakly- …

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-09-11, 05:39

by

by starhawk

in Marvin \ Video

in Marvin \ Video

starhawk wrote on 2022-08-29, 20:29: Never heard of that! Do tell...? @Jo22 -- still intrigued. Plz inform.

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-08-29, 20:29

by

by starhawk

in Marvin \ Video

in Marvin \ Video

Never heard of that! Do tell...?

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-08-29, 03:58

by

by starhawk

in Marvin \ Video

in Marvin \ Video

Got the brightness pot sorted, and guess what? Did a preemptive multimeter check between power and ground, just to be on the safe side... I swear it was fine before I pulled it, cakewalk, right? NOPE. 34 ohms between power and ground 🙁 this miiight be a while, folks.

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-08-27, 00:31

by

by starhawk

in Marvin \ Video

in Marvin \ Video

The fellow I donated the old parts to, including the missing pot got back to me. For the record, I was wrong-- for a Compaq Portable II it's a 10k pot, for the Portable IIIs (and, presumably, the Portable 386, which uses a lot of the same chassis and internal parts, but a VERY different motherboard) …

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-08-19, 02:40

by

by starhawk

in Marvin \ Video

in Marvin \ Video

Sorry I've not been updating, had a lot going on. I'm embarrassed to have to ask, but -- does anyone know the proper value for the brightness potentiometer? I've misplaced the original, sadly, and I think it's accidentally gone :( Please? I can't use that modeline without a replacement pot, I'm not …

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-08-16, 14:56

by

by starhawk

in Marvin \ Video

in Marvin \ Video

Sorry I've not been updating, had a lot going on. I'm embarrassed to have to ask, but -- does anyone know the proper value for the brightness potentiometer? I've misplaced the original, sadly, and I think it's accidentally gone 🙁

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-07-31, 13:29

by

by starhawk

in Marvin \ Video

in Marvin \ Video

I've actually tested the security monitor analog board and it is known good at SVGA resolution. I don't know how to calculate modelines, but I vaguely remember how to feed them into xrandr. (I miss the days of xorg[dot]conf... what can I say, I used to use Puppy Linux lol.) If you can tell me how, …

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-07-31, 10:35

by

by starhawk

in Marvin \ Video

in Marvin \ Video

OK, here's full details. Please read this carefully, I'd strongly prefer to only type this out once. No offense. Please note that, the way I write, if you skim or otherwise speed-read, you *will* miss and misinterpret things that I've written here. I don't know why, it's just part of how I write. …

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Re: Here's a weird one: Anyone know anything about "Extended EGA"?

Posted on 2022-07-31, 01:04

by

by starhawk

in Marvin \ Video

in Marvin \ Video

The Atari ST's High-Resolution Monochrome Mode used a 640x400 pels resolution @72Hz/35.7 KHz. True multisync monitors were usually capable of displaying these timings, too. Yeah, I own a multi-frequency TTL/analog CRT color monitor that covers 15..35kHz and likely can deal with that mode, too. I …

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