ADW_NUM_SG_BLOCK  867 dev/ic/adw.c   		bzero(ccb->sg_block, sizeof(ADW_SG_BLOCK) * ADW_NUM_SG_BLOCK);
ADW_NUM_SG_BLOCK   70 dev/ic/adw.h   	ADW_SG_BLOCK		sg_block[ADW_NUM_SG_BLOCK];