HelenOS sources

CUDA_RCV_BUF_SIZE   94 kernel/genarch/include/genarch/drivers/via-cuda/cuda.h 	CUDA_RCV_BUF_SIZE = 5
CUDA_RCV_BUF_SIZE   48 uspace/drv/bus/adb/cuda_adb/cuda_adb.h 	CUDA_RCV_BUF_SIZE = 5
HelenOS homepage, sources at GitHub