BIU2400_REQINP
ISP_WRITE(isp, BIU2400_REQINP, 0);
if (regoff == BIU2400_REQINP ||
case BIU2400_REQINP:
case BIU2400_REQINP:
ISP_WRITE(isp, BIU2400_REQINP, nxti); \
ISP_WRITE(isp, BIU2400_REQINP, isp->isp_reqidx)