Google book search turned up a few hits. It was indeed tied to the company's specific monitors - costing $1,200 to $7,800. Seems it puts out 1024x768 ... or maybe 1024x758, or 1025x768. Now you just need drivers, a pinout, sync frequencies, signal polarities ....
NB: the DB-9 connector was used for a lot of old video devices; standardized ones (MDA/EGA/CGA etc) and non-standardized ones. Plugging the wrong one in can destroy the card and the monitor.
Long story short - ain't gonna work. If one can find the drivers (which I doubt), then it might be worth tinkering, but until then, it's a paperweight.
/ETA/
NB: the DB-9 connector was used for a lot of old video devices; standardized ones (MDA/EGA/CGA etc) and non-standardized ones. Plugging the wrong one in can destroy the card and the monitor.
Long story short - ain't gonna work. If one can find the drivers (which I doubt), then it might be worth tinkering, but until then, it's a paperweight.
/ETA/
http://archive.info-mac.org/per/im/infomacv16/infomacv16-116.txt