diff --git a/VAX/vax730_stddev.c b/VAX/vax730_stddev.c
index d40e0341..0eb8e89c 100644
--- a/VAX/vax730_stddev.c
+++ b/VAX/vax730_stddev.c
@@ -939,7 +939,7 @@ sim_rtcn_get_time(&now, TMR_CLK);                       /* get curr time */
 base.tv_sec = (time_t)toy->toy_gmtbase;
 base.tv_nsec = toy->toy_gmtbasemsec * 1000000;
 sim_timespec_diff (&val, &now, &base);                  /* val = now - base */
-sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + val.tv_nsec/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
+sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
 return (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000);  /* 100hz Clock rounded Ticks */
 }
 
diff --git a/VAX/vax750_stddev.c b/VAX/vax750_stddev.c
index 63b791b1..18712237 100644
--- a/VAX/vax750_stddev.c
+++ b/VAX/vax750_stddev.c
@@ -935,7 +935,7 @@ sim_rtcn_get_time(&now, TMR_CLK);                       /* get curr time */
 base.tv_sec = (time_t)toy->toy_gmtbase;
 base.tv_nsec = toy->toy_gmtbasemsec * 1000000;
 sim_timespec_diff (&val, &now, &base);                  /* val = now - base */
-sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + val.tv_nsec/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
+sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
 return (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000);  /* 100hz Clock rounded Ticks */
 }
 
diff --git a/VAX/vax780_stddev.c b/VAX/vax780_stddev.c
index 90df8c8f..8bf2dae4 100644
--- a/VAX/vax780_stddev.c
+++ b/VAX/vax780_stddev.c
@@ -923,7 +923,7 @@ sim_rtcn_get_time(&now, TMR_CLK);                       /* get curr time */
 base.tv_sec = (time_t)toy->toy_gmtbase;
 base.tv_nsec = toy->toy_gmtbasemsec * 1000000;
 sim_timespec_diff (&val, &now, &base);                  /* val = now - base */
-sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + val.tv_nsec/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
+sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
 return (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000);  /* 100hz Clock rounded Ticks */
 }
 
diff --git a/VAX/vax820_stddev.c b/VAX/vax820_stddev.c
index 4a89032b..3a7962a2 100644
--- a/VAX/vax820_stddev.c
+++ b/VAX/vax820_stddev.c
@@ -944,7 +944,7 @@ sim_rtcn_get_time(&now, TMR_CLK);                       /* get curr time */
 base.tv_sec = toy->toy_gmtbase;
 base.tv_nsec = toy->toy_gmtbasemsec * 1000000;
 sim_timespec_diff (&val, &now, &base);
-sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + val.tv_nsec/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
+sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
 return (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000);  /* 100hz Clock rounded Ticks */
 }
 
diff --git a/VAX/vax860_stddev.c b/VAX/vax860_stddev.c
index e52003a7..6ea341ad 100644
--- a/VAX/vax860_stddev.c
+++ b/VAX/vax860_stddev.c
@@ -1042,7 +1042,7 @@ sim_rtcn_get_time(&now, TMR_CLK);                       /* get curr time */
 base.tv_sec = (time_t)toy->toy_gmtbase;
 base.tv_nsec = toy->toy_gmtbasemsec * 1000000;
 sim_timespec_diff (&val, &now, &base);                  /* val = now - base */
-sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + val.tv_nsec/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
+sim_debug (TMR_DB_TODR, &clk_dev, "todr_rd() - TODR=0x%X - %s\n", (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000), todr_fmt_vms_todr ((int32)(val.tv_sec*100 + val.tv_nsec/10000000)));
 return (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000);  /* 100hz Clock rounded Ticks */
 }
 
diff --git a/VAX/vax_cpu.c b/VAX/vax_cpu.c
index 2cc473b3..45befe4b 100644
--- a/VAX/vax_cpu.c
+++ b/VAX/vax_cpu.c
@@ -3300,6 +3300,12 @@ return 0;                                               /* set new cc's */
 
 void cpu_idle (void)
 {
+/* Normal use of sim_idle would specify FALSE (0) as the sim_interval */
+/* adjustment parameter since this simullator doesn't have a WAIT     */
+/* instruction and merely detects instruction patterns that reflect   */
+/* the system idling.  However, a TRUE (1) value for this parameter   */
+/* produces clock calibration results while idling which closer       */
+/* the actual simulator instruction execution rate.                   */
 sim_idle (TMR_CLK, TRUE);
 }
 
diff --git a/VAX/vax_stddev.c b/VAX/vax_stddev.c
index 5732be6e..f4a98ee3 100644
--- a/VAX/vax_stddev.c
+++ b/VAX/vax_stddev.c
@@ -494,7 +494,7 @@ if (val.tv_sec >= TOY_MAX_SECS) {                       /* todr overflowed? */
     return todr_reg = 0;                                /* stop counting */
     }
 
-sim_debug (DBG_REG, &clk_dev, "todr_rd() - TODR=0x%X\n", (int32)(val.tv_sec*100 + val.tv_nsec/10000000));
+sim_debug (DBG_REG, &clk_dev, "todr_rd() - TODR=0x%X\n", (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000));
 return (int32)(val.tv_sec*100 + (val.tv_nsec + 5000000)/10000000);  /* 100hz Clock rounded Ticks */
 }
 
diff --git a/doc/simh.doc b/doc/simh.doc
index 9848ebe2..091d7fe7 100644
Binary files a/doc/simh.doc and b/doc/simh.doc differ