JQS_wTail
wTmp = readw(chip->DARQ + JQS_wTail) + PCTODSP_OFFSET(DAQDS__size);
writew(wTmp, chip->DARQ + JQS_wTail);
DAPQ_tail = readw(chip->DAPQ + JQS_wTail);
writew(DAPQ_tail, chip->DAPQ + JQS_wTail);
writew(PCTODSP_OFFSET(0 * DAQDS__size), chip->DAPQ + JQS_wTail);
chip->DARQ + JQS_wTail);
writew(0, base + JQS_wTail);
tail = readw(chip->DSPQ + JQS_wTail);