This project started as a high speed A/D interfaced to a Xilinx development board. Components include: A design for an 8-bit, 100MHz, 4-channel A/D PCB that interfaces to a Digilent (http://www.digilentinc.com) Nexys FPGA board. VHDL code to clock the A/D's, optionally downsample, and capture samples into the FPGA's on-chip memory. Firmware for the USB chip on the Nexys to support data transfer to a Linux PC. Drivers to access the data using the Octave signal processing language. Octave (http://www.gnu.org/software/octave) programs can be used to capture and display A/D data, providing a rudimentary oscilloscope function.Google code project started 06Apr2009, since moved to SourceForge.