i[34]86-ncr-*) gdb_host=ncr3000 ;;
i[34]86-sequent-bsd*) gdb_host=symmetry ;; #dynix
+i[34]86-sequent-sysv4*) gdb_host=ptx4 ;;
i[34]86-sequent-sysv*) gdb_host=ptx ;;
i[34]86-*-aix*) gdb_host=i386aix ;;
hppa*-*-hiux*) gdb_target=hppahpux ;;
hppa*-*-osf*) gdb_target=hppaosf ;;
-i[34]86-sequent-*) gdb_target=symmetry ;;
+i[34]86-sequent-bsd*) gdb_target=symmetry ;;
+i[34]86-sequent-sysv4*) gdb_target=ptx4 ;;
+i[34]86-sequent-sysv*) gdb_target=ptx ;;
i[34]86-ncr-*) gdb_target=ncr3000 ;;
i[34]86-*-aout*) gdb_target=i386aout ;;