http://rhombus-tech.net/ingenic/jz4775/news/
yippeee! the jz4775 cpu card didn't blow up, instead it announced itself on the usb bus, and i was able to modify a CI120 usbloader i found, to upload a UART0-based "hello world" program. next phase would be to initialise the DDR3 RAM, then compile and upload u-boot into DDR3 RAM and execute it.
all very exciting