New Delta Tau PMAC VME 4 Axis Controller with 4-Axis Auxiliary PCA Board VXI
The smaller top Processor PMAC Board PCA is marked: DELTA TAU SYSTEMS MADE IN USA, PMAC CPU-GULL. It has a 19.66608 MHz CPU. The main PCA is marked on the top: (PMAC) DELTA TAU DATA SYSTEMS INC. MADE IN USA.