diff --git a/GRI/gri_stddev.c b/GRI/gri_stddev.c
index 62c22304..a1ada830 100644
--- a/GRI/gri_stddev.c
+++ b/GRI/gri_stddev.c
@@ -1,6 +1,6 @@
 /* gri_stddev.c: GRI-909 standard devices
 
-   Copyright (c) 2001-2015, Robert M Supnik
+   Copyright (c) 2001-2016, Robert M Supnik
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
@@ -29,6 +29,7 @@
    hsp          S42-006 high speed punch
    rtc          real time clock
 
+   05-May-16    RMS     Fixed calling sequence inconsistencies (Mark Pizzolato)
    28-Mar-15    RMS     Revised to use sim_printf
    31-May-08    RMS     Fixed declarations (Peter Schorn)
    30-Sep-06    RMS     Fixed handling of non-printable characters in KSR mode
@@ -211,7 +212,7 @@ DEVICE rtc_dev = {
 
 /* Console terminal function processors */
 
-uint32 tty_rd (int32 src, int32 ea)
+uint32 tty_rd (uint32 src)
 {
 return tti_unit.buf;                                    /* return data */
 }
@@ -303,7 +304,7 @@ return SCPE_OK;
 
 /* High speed paper tape function processors */
 
-uint32 hsrp_rd (int32 src, int32 ea)
+uint32 hsrp_rd (uint32 src)
 {
 return hsr_unit.buf;                                    /* return data */
 }
@@ -391,7 +392,7 @@ return SCPE_OK;
 
 /* Clock function processors */
 
-t_stat rtc_fo (int32 op)
+t_stat rtc_fo (uint32 op)
 {
 if (op & RTC_OFF)                                       /* clock off? */
     sim_cancel (&rtc_unit);
@@ -402,7 +403,7 @@ if (op & RTC_OV)                                        /* clr ovflo? */
 return SCPE_OK;
 }
 
-uint32 rtc_sf (int32 op)
+uint32 rtc_sf (uint32 op)
 {
 if ((op & RTC_OV) && (dev_done & INT_RTC))
     return 1;
diff --git a/I1401/i1401_cd.c b/I1401/i1401_cd.c
index a3436043..9110a712 100644
--- a/I1401/i1401_cd.c
+++ b/I1401/i1401_cd.c
@@ -1,6 +1,6 @@
 /* i1401_cd.c: IBM 1402 card reader/punch
 
-   Copyright (c) 1993-2015, Robert M. Supnik
+   Copyright (c) 1993-2016, Robert M. Supnik
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
@@ -35,6 +35,7 @@
    Cards are represented as ASCII text streams terminated by newlines.
    This allows cards to be created and edited as normal files.
 
+   05-May-16    RMS     Fixed calling sequence inconsistency (Mark Pizzolato)
    28-Feb-15    RMS     Added read from console
    24-Mar-09    RMS     Fixed read stacker operation in column binary mode
                         Fixed punch stacker operation (Van Snyder)
@@ -391,7 +392,7 @@ return SCPE_OK;
    or $, ., square for overlap control (ignored).
 */
 
-t_stat select_stack (int32 ilnt, int32 mod)
+t_stat select_stack (int32 mod)
 {
 if (mod == BCD_ONE)
     s1sel = 1;
diff --git a/PDP10/pdp10_mdfp.c b/PDP10/pdp10_mdfp.c
index 0caa5624..eaeed1d4 100644
--- a/PDP10/pdp10_mdfp.c
+++ b/PDP10/pdp10_mdfp.c
@@ -1,6 +1,6 @@
 /* pdp10_mdfp.c: PDP-10 multiply/divide and floating point simulator
 
-   Copyright (c) 1993-2008, Robert M Supnik
+   Copyright (c) 1993-2016, Robert M Supnik
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
@@ -23,6 +23,7 @@
    used in advertising or otherwise to promote the sale, use or other dealings
    in this Software without prior written authorization from Robert M Supnik.
 
+   05-May-16    RMS     Fixed bug in DMUL carry (Mark Pizzolato)
    2-Apr-04     RMS     Fixed bug in floating point unpack
                         Fixed bug in FIXR (found by Phil Stone, fixed by
                         Chris Smith)
@@ -320,7 +321,7 @@ for (i = 0; i < 71; i++) {                              /* 71 mpyer bits */
         }
     if (mpy[1] & 1) {                                   /* if mpy lo bit = 1 */
         AC(p1) = AC(p1) + mpc[1];
-        AC(ac) = AC(ac) + mpc[0] + (TSTS (AC(p1) != 0));
+        AC(ac) = AC(ac) + mpc[0] + (TSTS (AC(p1)) != 0);
         AC(p1) = CLRS (AC(p1));
         }
     }
diff --git a/SDS/sds_sys.c b/SDS/sds_sys.c
index e1ddc261..c0413678 100644
--- a/SDS/sds_sys.c
+++ b/SDS/sds_sys.c
@@ -1,6 +1,6 @@
 /* sds_sys.c: SDS 940 simulator interface
 
-   Copyright (c) 2001-2012, Robert M Supnik
+   Copyright (c) 2001-2016, Robert M Supnik
 
    Permission is hereby granted, free of charge, to any person obtaining a
    copy of this software and associated documentation files (the "Software"),
@@ -23,6 +23,7 @@
    used in advertising or otherwise to promote the sale, use or other dealings
    in this Software without prior written authorization from Robert M Supnik.
 
+   05-May-16    RMS     Fixed ascii-to-sds940 data (Mark Pizzolato)
    19-Mar-12    RMS     Fixed declarations of CCT arrays (Mark Pizzolato)
 */
 
@@ -150,10 +151,10 @@ const int8 sds940_to_ascii[64] = {
      };
 
 const int8 ascii_to_sds940[128] = {
-     -1, 141, 142, 143, 144, 145, 146, 147,             /* 00 - 37 */
-     -1, 151, 152, 153, 154, 155,  -1,  -1,             
-     -1, 161, 162, 163, 164, 165, 166, 167,
-    170, 171, 172,  -1,  -1,  -1,  -1,  -1,
+      -1, 0141, 0142, 0143, 0144, 0145, 0146, 0147,     /* 00 - 37 */
+      -1, 0151, 0152, 0153, 0154, 0155,   -1,   -1,             
+      -1, 0161, 0162, 0163, 0164, 0165, 0166, 0167,
+    0170, 0171, 0172,   -1,   -1,   -1,   -1,   -1,
     000, 001, 002, 003, 004, 005, 006, 007,             /* 40 - 77 */
     010, 011, 012, 013, 014, 015, 016, 017,
     020, 021, 022, 023, 024, 025, 026, 027,