DRV_MASK
dsk.unit = dsk.drive & DRV_MASK;
dsk.drive & DRV_MASK, dev_nm[dsk.type],
dsk.drive & DRV_MASK, dev_nm[dsk.type],
kname, dsk.drive & DRV_MASK, dev_nm[dsk.type],
switch (create->create->flags & DRV_MASK) {
if (((flags & DRV_MASK) == 0) ^
if (((flags & DRV_MASK) != 0) &&
((flags & DRV_MASK) != DRV_EXACT) &&
((flags & DRV_MASK) != DRV_RE)) {
csb->csb_cmds[1] = csb->csb_cmds[1] | (unit & DRV_MASK);
csb->csb_cmds[1] = csb->csb_cmds[1] | (unit & DRV_MASK);
csb->csb_cmds[1] = csb->csb_cmds[1] | (unit & DRV_MASK);
csb->csb_cmds[1] = csb->csb_cmds[1] | (unit & DRV_MASK);