FDCSELREG_STP    1023 drivers/block/ataflop.c 	dma_wd.dma_mode_status = FDCSELREG_STP | rwflag;
FDCSELREG_STP    1286 drivers/block/ataflop.c 	dma_wd.dma_mode_status = FDCSELREG_STP | 0x100;