TFTR graphics system

The TFTR graphics system processes output from many programs running simultaneously in a multi-computer configuration. The concept of symbolic logical names as graphics destinations allows users to direct their plots to any device available on the graphics system. By shadowing these symbolic logical names, users can send copies of plots to another destination such as a laser printer. The device-independent graphics code allows applications programs to plot to the different graphic device types available on the system. Recently, the graphics systems has been upgraded to meet additional Neutral Beam diagnostics throughput requirements. This enhancement consists of adding an extra CAMAC highway link and modifying the graphics I/O server task to utilize the two available CAMAC links efficiently. This paper presents an overview of the current system and describes the recent enhancements