T4D_SBBL_SBCL
outl((val << 16) | val, TRID_REG(trident, T4D_SBBL_SBCL));
result = inw(TRID_REG(trident, T4D_SBBL_SBCL));
tmp = inw(TRID_REG(trident, T4D_SBBL_SBCL));