diff --git a/scp.c b/scp.c
index a7df22e7..d93c451f 100644
--- a/scp.c
+++ b/scp.c
@@ -3078,6 +3078,7 @@ if (*argv[0]) {                                         /* sim name arg? */
 sim_quiet = sim_switches & SWMASK ('Q');                /* -q means quiet */
 sim_on_inherit = sim_switches & SWMASK ('O');           /* -o means inherit on state */
 
+sim_debug (SIM_DBG_INIT, &sim_scp_dev, "Beginning SCP module initializations\n");
 sim_init_sock ();                                       /* init socket capabilities */
 AIO_INIT;                                               /* init Asynch I/O */
 sim_finit ();                                           /* init fio package */
@@ -3106,6 +3107,7 @@ if ((argc > 2) &&
     return EXIT_FAILURE;
     }
 
+sim_debug (SIM_DBG_INIT, &sim_scp_dev, "Merging External Environment variables overriding SCP commands\n");
 for (i = 0; cmd_table[i].name; i++) {
     size_t alias_len = strlen (cmd_table[i].name);
     char *cmd_name = (char *)calloc (1 + alias_len, sizeof (*cmd_name));
@@ -13212,6 +13214,7 @@ t_stat sim_brk_init (void)
 {
 int32 i;
 
+sim_debug (SIM_DBG_INIT, &sim_scp_dev, "sim_brk_init()\n");
 for (i=0; i<sim_brk_lnt; i++) {
     BRKTAB *bp = sim_brk_tab[i];
 
diff --git a/sim_timer.c b/sim_timer.c
index c631b9d2..0bbcb2e6 100644
--- a/sim_timer.c
+++ b/sim_timer.c
@@ -3759,6 +3759,7 @@ UNIT precalib_unit = { UDATA (&sim_timer_stop_svc, 0, 0) };
 
 if (cmd == NULL)
     return;
+sim_debug (SIM_DBG_INIT, &sim_scp_dev, "Starting sim_timer_precalibrate_execution_rate()\n");
 sim_run_boot_prep (RU_GO);
 while (sim_clock_queue != QUEUE_LIST_END)
     sim_cancel (sim_clock_queue);
@@ -3790,7 +3791,8 @@ for (tmr=0; tmr<=SIM_NTIMERS; tmr++) {
     }
 sim_inst_per_sec_last = sim_precalibrate_ips;
 sim_idle_stable = 0;
-exdep_cmd (EX_D, "ALL 0");      /* Leave memory in its initial state */
+sim_debug (SIM_DBG_INIT, &sim_scp_dev, "Precalibration Rate: %s %s Per Sec\n", sim_fmt_numeric (sim_inst_per_sec_last), sim_vm_interval_units);
+sim_debug (SIM_DBG_INIT, &sim_scp_dev, "Done sim_timer_precalibrate_execution_rate()\n");
 }
 
 double