A RISC/UNIX workstation second stage trigger

Recent advances in reduced-instruction-set computer (RISC) workstations have greatly altered the economics of processing power available for experiments. In addition, VME interfaces available for many of these workstations make it possible to use them in experiment front ends for filtering and compressing data. Such a second-stage trigger has been implemented at LAMPF (Clinton P. Anderson Meson Physics Facility) using a commercially available workstation and VME interface. The implementation is described, and measurements of data transfer speeds are presented.<
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