Hello guys! Today I picked up a Macintosh SE that had a Micrographic Images Megascreen 3 card installed.
I think it's safe to assume that this is a video card for some weird external B/W monitors.
Do you have any info on the card and perhaps drivers? Thanks!
Forget the D-Sub, you've got BNC available! That should be straight up Analog B&W that can be fed into any good MultiSync monitor. It may look like hell at first, but you can get there one way or another. Bookmarks to the relevant threads have fallen victim to the crash, but the threads are in Hacks under my byline. Radius TPD comes to mind.
I think the thread got lost, but I found a "MegaScreen for Macintosh SE" that looks much like yours. There is a working driver for system 6. @quorten has a page with some info and drivers: https://github.com/quorten/megascreen
I couldn't get mine talking to any displays I have, curous to see if anyone else has any luck.
Edit: very strange, text was there with non-clickable link until I refreshed page, now the text edit is gone and the link is still clickable?
At any rate, strange that the DE9 pinout is RGB output from a B&W SE? Figuring it may have to do with compatibility requirements for Medical imaging, CAD or DOD/Government large screen CRT compatibility? Trying to summarize post by @quorten made in thread link: