INTR_MASK_REG_B
bus_space_write_1(bst, bsh, INTR_MASK_REG_B, 0);
bus_space_write_1(bst, bsh, INTR_MASK_REG_B, 0);
bus_space_write_1(bst, bsh, INTR_MASK_REG_B,
bus_space_write_1(bst, bsh, INTR_MASK_REG_B,
bus_space_read_1(bst, bsh, INTR_MASK_REG_B) | IM_ALLOC_INT);
bus_space_write_1(bst, bsh, INTR_MASK_REG_B,
bus_space_read_1(bst, bsh, INTR_MASK_REG_B) |
mask = bus_space_read_1(bst, bsh, INTR_MASK_REG_B);
bus_space_write_1(bst, bsh, INTR_MASK_REG_B, 0);
mask |= bus_space_read_1(bst, bsh, INTR_MASK_REG_B);
bus_space_write_1(bst, bsh, INTR_MASK_REG_B, mask);