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| Micrographic Images Megascreen 3 - SE PDS Video card | |
| Posted by: rollmastr on 2021-09-04 11:40:20 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! See the attached images of the card.   | |
| Posted by: bdurbrow on 2021-09-04 17:58:40 I’m wondering if that d-sub 9 pin connector is supposed to drive a PC standard MDA monitor? | |
| Posted by: Trash80toHP_Mini on 2021-09-04 19:29:46 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. | |
| Posted by: rollmastr on 2021-09-23 04:42:34 Found and uploaded to: https://macintoshgarden.org/apps/micrographic-images-megamac-10-megascreen-megamath-megadrive | |
| Posted by: cy384 on 2021-09-23 07:08:26 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. | |
| Posted by: rollmastr on 2021-09-23 08:19:08 Thanks for the link. This seems to be the same driver that I found. Unfortunately I do not have a compatible display, but that driver does seem to work in System 6. | |
| Posted by: Trash80toHP_Mini on 2021-09-24 11:43:07 In depth info and DE9 pinout: First rev of your board reviewed. Looks like you can hook it up to a TV input to see if it's working. Hadn't noticed that in the other thread.  edit: looks like Broderbund's The Toy Shop would be a cool toy, has anyone used it or seen it in a repository? | |
| Posted by: Trash80toHP_Mini on 2021-09-24 12:35:46 DRAT! Edit surrounding original link expanding on the BNC output saved right on the 45min. edit limit. Oddly the text took, but link was borked, here's the clickable version I'd posted alone at first: 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: | |
| Posted by: rollmastr on 2021-09-25 06:31:28 Great information, thanks! | |
| Posted by: Aeroform on 2021-10-08 05:59:22 Just found one of theese in a newly acquired SE, thanks for the interesting background and info. Now you know at least one found its way across the pond to Sweden sometime in the early 90’s ☺️  | |
| Posted by: cheesestraws on 2021-10-08 17:05:40 I especially like the way the words "face down" are facing up | |
| Posted by: aboutthismac on 2024-08-14 13:59:51 I picked up an SE today with this card installed as well from its original owner. He told me that he used the card to connect it to his TV as he was using the Mac for his desktop publishing business. | |
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