November 14, 2019, 10:46:20 pm

NeXT RGB Board

Started by gtnicol, December 14, 2013, 03:20:29 am

Previous topic - Next topic

gtnicol

I'll see if I can get some better pictures using my kids camera... 5MP vs. 8MP should make a difference...

gtnicol

The extra chip is SC63594FN RMBY8849.

pentium

Front and back.




The SC63594FN from what I've found so far (I think) is a 10-bit series buffer/line driver with 20 ohm outputs.

-NeXT 68040 Cube with NS 3.3 and 64Mb ram

gtnicol

If that's all it is, then we actually have a chance at producing a VGA board for the NeXT machines. From looking at the rest of the board, it's mostly just memory buffers and whatnot... possible to replace with some more modern approaches even.

pergamon

I completely forgot, but I've got one of these too:  http://www.flickr.com/photos/mgrdcm/sets/72157638709188844/

Looks to be the same board.  Same part number (534 REV AF).  I don't have the cable though.

gtnicol

Do you have a modified motherboard? I only have the one...

pergamon

Quote from: "gtnicol"Do you have a modified motherboard? I only have the one...


Sadly, no, I don't believe I do.  I'll have to double check - I got that board in a lot with a few other cubes and I may just not have noticed.  But by now I don't know which ones were with it, so I'll have to check all of them...

pentium

By the way, if we decide to make some sort of paddleboard that plugs into the socket instead of a complete board an a neighboring slot, those eight  pads in the corner of the board supply +12 and -12v.
The seven pads immediately behind the monitor connector are all ground.

-NeXT 68040 Cube with NS 3.3 and 64Mb ram

NeXTnewbe

Wow, Great find, where did you get this board from?