I've got a test harness to build for a device that outputs a ~1Mbit/s SPI stream, but I'm struggling to find a simple SPI slave-->USB solution. The FTDI devices seem to have the speed, but as far as I can tell only support SPI master mode.
Are you guys aware of there anything off the shelf that could work (<$250) or am I going to have to cobble something together with a USB microcontroller?
Thanks for the help,
David