FIFO_ENABLED
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_ENABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_ENABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_ENABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_ENABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_ENABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_ENABLED);
OUTW(bktr, BKTR_GPIO_DMA_CTL, FIFO_ENABLED);