[This is the console log from booting xxdp-rqdx-20220619.t58 on SIMH V4.0.0 (Beta release date 07-SEP-2017) on a PDP-11/23+ from device TDC0 (DDO:)] XXDP-XM EXTENDED MONITOR - XXDP V2.5 REVISION: F0 BOOTED FROM DD0 124KW OF MEMORY NON-UNIBUS SYSTEM RESTART ADDRESS: 152000 TYPE "H" FOR HELP ! .DIR ENTRY# FILNAM.EXT DATE LENGTH START VERSION 1 XXDPSM.SYS 1-MAR-89 29 000050 E.0 2 DRSSM .SYS 1-MAR-89 24 000105 G.2 3 XXDPXM.SYS 1-MAR-89 39 000135 F.0 4 DRSXM .SYS 1-MAR-89 48 000204 C.0 5 DATE .SYS 1-MAR-89 2 000264 B.0 6 DIR .SYS 1-MAR-89 7 000266 D.0 7 HELP .TXT 1-MAR-89 29 000275 8 DD .SYS 1-MAR-89 3 000332 D.0 9 DU .SYS 1-MAR-89 4 000335 E.0 10 DL .SYS 1-MAR-89 4 000341 D.0 11 DUSZ .SYS 1-MAR-89 2 000345 C.0 12 ZRQCH0.BIN 1-MAR-89 72 000347 13 ZRQFC0.BIC 1-MAR-89 34 000457 14 ZRQGC0.BIN 1-MAR-89 74 000521 FREE BLOCKS: 100 .