Back in the late 90's, one of the largest financial services firms in the US was still running its order-routing network on PDP-11s. One reason was that the co

Back in the late 90's, one of the largest financial services firms in the US was still running its order-routing network on PDP-11s. One reason was that the code relied on the physical layout of the RK05 disks. They had people around the country scouring salvage auctions for spare parts that were no longer being manufactured.