SCSIFIFOREG
bval = amd_read8(amd, SCSIFIFOREG);
pSRB->TargetStatus = amd_read8(amd, SCSIFIFOREG);
pSRB->EndMessage = amd_read8(amd, SCSIFIFOREG);
amd->msgin_buf[amd->msgin_index] = amd_read8(amd, SCSIFIFOREG);
amd_write8_multi(amd, SCSIFIFOREG, amd->msgout_buf, amd->msgout_len);
amd->cur_target = amd_read8(amd, SCSIFIFOREG);
amd->cur_lun = amd_read8(amd, SCSIFIFOREG) & 7;
amd_write8_multi(amd, SCSIFIFOREG, cdb, cdb_len);
amd_write8(amd, SCSIFIFOREG, identify_msg);
amd_write8(amd, SCSIFIFOREG, pcsio->tag_action);
amd_write8(amd, SCSIFIFOREG, pSRB->TagNumber);