LM77Tlow
tlow = iicprobew(LM77Tlow) & mask;
if (tos != (iicprobew(LM77Tlow + i) & mask) ||
if (iicprobew(LM77Tlow + i) != 0xffff ||
if (tlow != (iicprobew(LM77Tlow + i) & mask) ||