DSP FPGA Serial Commands

See VME communication with the DSP FPGA for details of the serial data format to the DSP FPGAs.
See vmeserr.tdf and vmeserw.tdf for FPGA code.
  Data
Command # Bits Function R/W
1 7-0 Send 8-bits of data to DSP serial input port W
2 31-0 Send 32-bits of data to FIFO from VME serial W
3 31-0 Read DSP-FPGA Status/Control Register R
4 31-0 Write DSP-FPGA Status/Control Register W