T4D_STOP_B
outl(what, TRID_REG(trident, T4D_STOP_B));
unsigned int reg = (voice & 0x20) ? T4D_STOP_B : T4D_STOP_A;
outl(0xffffffff, TRID_REG(trident, T4D_STOP_B));
outl(mask, TRID_REG(trident, T4D_STOP_B));
outl(mask[1], TRID_REG(trident, T4D_STOP_B));