116     struct UFB *ufb;  in findconport()  local
117     ufb = chkufb(0);  in findconport()
118     if (ufb == NULL)  in findconport()
122     conin = ufb->ufbfh);  in findconport()
195     struct UFB *ufb;  in akbhit()  local
196     ufb = chkufb(0);  in akbhit()
197     if (ufb == NULL || ufb->ufbfh == NULL)  in akbhit()
201     return WaitForChar(ufb->ufbfh, TIMEOUT) ? 1 : 0;  in akbhit()
214     struct UFB *ufb;  in agetch()  local
215     ufb = chkufb(0);  in agetch()
216     if (ufb == NULL || ufb->ufbfh == NULL)  in agetch()
220     len = Read(ufb->ufbfh, &buf, 1);  in agetch()