DFS
np->rv_ctest5 |= DFS; /* Dma Fifo Size */
(np->rv_ctest5 & DFS) ? "large" : "normal");
ctest5 = (np->rv_ctest5 & DFS) ? INB (nc_ctest5) : 0;
if (ctest5 & DFS)
np->rv_ctest5 |= DFS; /* Dma Fifo Size */
if (dfifo & (DFS << 16))