Up for sale is this very hard to find graphics board for the Atari 520ST and 1040ST computers. It give these computers 4096 colors, just like an Atari 1040STe computer. This board should also work in an Atari Mega ST computer, but, I have not personally tested this on that computer.
No documentation, but,I do remember installing one of these boards in my Atari 1040ST computer, back in the day. If memory serves me, you first remove the original video chip, and then plug it into the JRI ST4096C board. Then you plug the board into the video chips IC socket. The two video chips combined give you 4096 colors.NOTE: I will not lower the price. I do not combine shipping on vintage computer items. All vintage computer hardware and software are sold as-is.
Many people are watching this item. So, I suggest you buy it before someone else does.