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Home Forums 68kMLA Power R Video Adapter — #16
Post #16 by Bunsen
Source Forum68kMLA
CategoryHardware
Post DateMon, 18 Aug 2008 - 10:28
Original URLhttps://68kmla.org/bb/threads/power-r-video-adapter.14485/
Post
So I apologize if it sounds like I am challenging you
I apologise if it seems like I'm challenging you. That's not my intention. God knows I've posted some far, far crazier speculative hack thoughts here. And the good folks of the MLA have helped me to sort out what is possible and what is not, and/or offered better ways of approaching the possibly possible to find out if it can work.

I'm just trying to do the same.

That and I have a vested interest - as I have the LCD panel section without the Mac adapter. So the more gets found out about these devices, the better for me :D

You are the expert here
:lol: :lol: :lol: :lol: :lol:

Nooooo, I'm just an interested amateur, like you. My background is in audio engineering.

why you guys consider these two specs to be so vastly different. / a clear answer as to why the specs are totally incompatible when they seem so similar.
It doesn't have to be vastly different to not work.

Put it this way: would you attempt to load and fire a .38 cal bullet in a .33? I mean, it's close enough, right?

My amateur, non-expert opinion is that EGA *might* be possible, but it won't be plug and play. You may have to modify the monitor. You may have to build an adapter circuit. Even if it can be got working, it may place strain on some of the monitor circuits (or not: remember, not an expert). And that you really, really need to go read the links I provided you.

There are different types of TTL signal. There are different types of sync. There are different polarities of sync. Just plugging one pin into another doesn't guarantee anything, and I encourage further research.

Here's what I read about EGA on Wikipedia: / And here's what the manufacturer says:
When I come back to this, I'll try and make up a table of these values so we can compare them side by side.
I was simply trying to assess if it was even worth the effort.
Good good, always a good first step.
In any event, Bunsen, I bought the thing because / you expressed an interest in finding out more about it. Now I'm wondering if I should have bothered.
Gosh, really? I apologise if my tone has put you off. I am trying to help here. I absolutely think this is the kind of mad, hare-brained, crazy hacking there should be more of around here. Whether it works or not, it's still worth the time to experiment and investigate.

The point that perhaps clumsily I was trying to make is that these things are not like software standards - they're hard wired into the equipment, and thus physical constraints. And that if you try to butt heads with physics, physics will win every time. And I don't want to see you getting into an asplodey magic smoke escaping situation.

That's not to say that with the right research, and a tweak here and there, it can't happen. I get that you're trying to see if CGA or EGA is worth the effort. My guess is "Maybe - it's certainly worth the effort of a bit of fact checking."

And it reminds me that I have a 22" monochrome EGA monitor I've been wondering what the hell to do with }:)

God speed, brave soldier!

mp.ls