The optional Arcon MagicMemory Node TRAM (hereafter MagicMemory transputer) routes ct.packet protocol messages between the NEXUS TRAM, and Transtech BBKS4 interface and host system (running the muxnex daemon). The occam-language WhiteMagic program runs in the MagicMemory transputer, copying the messages and using cleverly designed hardware to convert the byte and bit ordering from little-endian (for the transputers) to big-endian (for the host system). Either two links (one bi-directional connection) or four links (two connections) of the MagicMemory may be used to connect the Nexus and host.
If no MagicMemory transputer is used between the Nexus and muxnex, software in those two modules will be used to emulate what the MagicMemory does in hardware.