diff --git a/sinqhm/usrConfig.c_diffs b/sinqhm/usrConfig.c_diffs
new file mode 100755
index 00000000..4266ac4c
--- /dev/null
+++ b/sinqhm/usrConfig.c_diffs
@@ -0,0 +1,125 @@
+The following is the output generated by diff for the distribution copy
+of usrConfig.c and the version used for generating the SinqHM_srv
+Histogram Memory bootable image.
+                                                 24-Nov-1999
+   Date of Distribution Version: Jul 12 1996
+   Date of SinqHM_srv Version:   Nov 24 1999
+======================================================================
+6,58d5
+<     /*
+<     **  This file should be copied to the VxWorks directory tree, e.g:
+<     **    pss123> set src = "lnsa09:tas_src:[sinqhm]"
+<     **    pss123> if ("$USER" != "maden") set src = "lnsg@$src"
+<     **    pss123> rcp -p "${src}usrConfig.c" \
+<     **                $HOME/wind/ppc/target/config/all/usrConfig.c
+<     **    pss123> rcp -p "${src}bld." $HOME/wind/SinqHM/bld
+<     **
+<     **  The system images are:
+<     **
+<     **       $HOME/wind/SinqHM/vxWorks_basic
+<     **       $HOME/wind/SinqHM/<instr>/vxWorks_auto
+<     **
+<     ** Using the Tornado tools:
+<     ** =======================
+<     **  To build the system image WITHOUT the SinqHM modules:
+<     **      a) Start WindCFG with no target selected.
+<     **      b) Select the "mv1603" BSP.
+<     **      c) Select configuration "SinqHM"
+<     **      d) Start up the editor and ensure that "SINQHM_SPAWN"
+<     **          is either not defined or is defined to be 0.
+<     **      e) Select the Build option.
+<     **      f) Copy file vxWorks to $HOME/wind/SinqHM/vxWorks_basic.
+<     **
+<     **  To build the system image WITH the SinqHM modules:
+<     **      a) Start WindCFG with no target selected.
+<     **      b) Select the "mv1603" BSP.
+<     **      c) Select configuration "SinqHM_spawn_<instr>".
+<     **      d) Start up the editor and ensure that "SINQHM_SPAWN"
+<     **          is defined to be non-zero, e.g:
+<     **              #define  SINQHM_SPAWN  1
+<     **      e) Select the Build option.
+<     **      f) Copy file $HOME/wind/ppc/target/config/mv1603/vxWorks 
+<     **                to $HOME/wind/SinqHM/<instr>/vxWorks_auto.
+<     **
+<     ** Using the bld script:
+<     ** ====================
+<     **  To build system images using the bld script:
+<     **
+<     **    a) without the SinqHM modules:
+<     **                     pss123> $HOME/wind/SinqHM/bld basic
+<     **    b) with    the SinqHM modules:
+<     **                     pss123> bld <instr> all
+<     **
+<     **  Warnings:
+<     **    The bld script will only work if SINQHM_SPAWN is NOT
+<     **    defined in $HOME/wind/ppc/target/config/mv1603/config.h
+<     **
+<     **    When using the bld script, be sure that the file
+<     **    $HOME/wind/ppc/target/config/mv1603/configdb.h
+<     **    is set to select the correct VxWorks options. It is
+<     **    easiest to use the Tornado WindCFG tool to do this.
+<     */
+62,67d8
+< V01E 24-Nov-1999 DM.	Yet more updates to the above comments.
+< V01D 18-Jun-1999 DM.	More updates to the above comments.
+< V01C 11-Dec-1998 DM.	Just update the above comments.
+< V01B  4-Aug-1997 DM.	Just spawn SinqHM_bootParamsConfig. This then spawns
+< 			    anything else which is specified in the boot line.
+< V01A  3-Jun-1997 DM.	Include spawning of SinqHM modules.
+402,411d342
+< #if (SINQHM_SPAWN != 0)
+< 	/*-----------------------------------------------------------------
+< 	** Define local variables and templates for SinqHM modules
+< 	*/
+< 
+<     void SinqHM_bootParamsConfig (void);
+< 
+< 	/*-----------------------------------------------------------------*/
+< #endif	    /* (SINQHM_SPAWN != 0) */
+< 
+415a347
+> 
+913c845
+<     printf ("  Creation date: %s %s\n", __DATE__, __TIME__);
+---
+>     printf ("  Creation date: %s\n", __DATE__);
+969,975d900
+< #if (SINQHM_SPAWN != 0)
+<     printf ("Spawning SinqHM_bootParamsConfig ...\n");
+<     taskSpawn ("hmConfig", 100, VX_FP_TASK, 20000,
+< 			(FUNCPTR) SinqHM_bootParamsConfig,
+< 			2400, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+< 	/*------------------------------------------------------------------*/
+< #endif	    /* (SINQHM_SPAWN != 0) */
+1025,1033c950,967
+< /*
+< **    int		fd;
+< */
+<     printf ("VxWorks (for %s) version %s\n", sysModel (), vxWorksVersion);
+<     printf ("Kernel: %s\n", kernelVersion ());
+<     printf ("Made on %s\n", creationDate);
+<     printf ("Delaying for 10 secs ...");
+<     taskDelay (600);
+<     printf (" done\n");
+---
+>     char string [40];
+> 
+>     printf ("VxWorks (for %s) version %s.\n", sysModel (), vxWorksVersion);
+>     printf ("Kernel: %s.\n", kernelVersion ());
+>     printf ("Made on %s.\n", creationDate);
+> 
+>     FOREVER
+>         {
+>         printf ("\nThis is a test.  Type something: ");
+>         fioRdString (STD_IN, string, sizeof (string));
+> 	printf ("\nYou typed \"%s\".\n", string);
+> 
+> 	if (strcmp (string, "0") == 0)
+> 	    memShow (0);
+> 
+> 	if (strcmp (string, "1") == 0)
+> 	    memShow (1);
+>         }
+1034a969
+> 
+========================================================================= End