 The ZDP ran the CPN operating system, a clone of CP/M, the Graduate, MS-DOS 2.11 and the Unicorn UNIX.Torch also sold the "Communicator", a system based on the BBC Micro with a Z80 second processor and integral modem, intended as a viewdata terminal.Torch later developed the Triple X workstation, based on the Motorola 68010 processor running Uniplus+ Unix System V. Launched in 1986, a number of these were sold but never reached critical mass, and the Triple X was overshadowed in the market by other vendors such as Sun Microsystems.