The trains in Melbourne ran on a DEC PDP-11/84 based signalling system.
In 2003 they started to move the application to PC running Windows XP using a special processor card to virtualise the old CPUs although "Due to the core software limitation (no source code available) we were compelled to integrate some original PDP-11 computer cards into the final product and this resulted in a hybrid PC platform"
In 2003 they started to move the application to PC running Windows XP using a special processor card to virtualise the old CPUs although "Due to the core software limitation (no source code available) we were compelled to integrate some original PDP-11 computer cards into the final product and this resulted in a hybrid PC platform"
https://www.equicon.de/images/Virtualisierung/LegacyTrainCon...