CH_START
outl(regs[0], TRID_REG(trident, CH_START + 0));
outl(regs[1], TRID_REG(trident, CH_START + 4));
outl(regs[2], TRID_REG(trident, CH_START + 8));
outl(regs[3], TRID_REG(trident, CH_START + 12));
outl(regs[4], TRID_REG(trident, CH_START + 16));
regs[0], inl(TRID_REG(trident, CH_START + 0)));
regs[1], inl(TRID_REG(trident, CH_START + 4)));
regs[2], inl(TRID_REG(trident, CH_START + 8)));
regs[3], inl(TRID_REG(trident, CH_START + 12)));
regs[4], inl(TRID_REG(trident, CH_START + 16)));