I actually used this OS in 1991 (with an X.25 card) to make a 12 station (over two sites) POS system. That main station was a 486 and all the terminals were 286

I actually used this OS in 1991 (with an X.25 card) to make a 12 station (over two sites) POS system. That main station was a 486 and all the terminals were 286s. It worked very, very well.