DIGITAL PATHWAYS TCU-130 ROUTINES SETTCU is a privileged task which will transfer the current time from a Digital Pathways model TCU-130 clock into the RSX-11M V3.2 software clock. It requests power fail notification via AST and then stops itself. Thus it could be checkpointed out until needed. STRTCU is a privileged task which transfers the current RSX-11M software time into a TCU-130 to correct for Daylight Saving Time or after running those DEC diagnostics which clobber the TCU. A modified startup file is also given.