The first entries in the 1000 series (models 1000 and 1200, introduced in 1984) were graphics terminals, peripherals to be connected to a general-purpose computer such as a Digital Equipment Corporation VAX, to provide graphical raster display abilities. They used 8 MHz Motorola 68000 CPUs with of RAM and had no disk drives. They booted over the network (via an Excelan EXOS/101 Ethernet card) from their controlling computer. They used the "PM1" CPU board, which was a variant of the board that was used in Stanford University's SUN workstation and later in the Sun-1 workstation from Sun Microsystems. The graphics system was composed of the GF1 frame buffer, the UC3 "Update Controller", DC3 "Display Controller", and the BP2 bitplane. The 1000-series machines were designed around the Multibus standard.