I tested net-wireless/atmel-firmware-1.1 and net-wireless/at76c503a-0.12_beta19 on my ~amd64 box with a T-Sinus 130data USB/WLAN adapter that has a at76c503a chip. Reproducible: Always Steps to Reproduce:
sebastian: if you have a amd64-box and you tested it (and it works ;)) you can mark it yourself in future, we don't want the exclusive right to keyword ebuilds, we just want software to be tested ;)