Output 'out' is a vector.

Pulse have a delay and then are periodic.
Pulses are sequentially pushed to each vector element (node pair).

src/xspice/icm/xtradev/seegenerator/cfunc.mod

@@ -60,7 +60,23 @@ NON-STANDARD FEATURES
   
 /*=== LOCAL VARIABLES & TYPEDEFS =======*/                         
 
-
+static void
+cm_seegen_callback(ARGS, Mif_Callback_Reason_t reason)
+{
+    switch (reason) {
+        case MIF_CB_DESTROY: {
+            double *last_t_value = STATIC_VAR (last_t_value);
+            if (last_t_value)
+                free(last_t_value);
+            STATIC_VAR (last_t_value) = NULL;
+            int *pulse_number = STATIC_VAR (pulse_number);
+            if (pulse_number)
+                free(pulse_number);
+            STATIC_VAR (pulse_number) = NULL;
+            break;
+        }
+    }
+}
     
            
 /*=== FUNCTION PROTOTYPE DEFINITIONS ===*/
@@ -108,12 +124,15 @@ NON-STANDARD FEATURES
 void cm_seegen(ARGS)  /* structure holding parms, 
                                        inputs, outputs, etc.     */
 {
-    double talpha;
+    double talpha;           /* parameter alpha */
-    double tbeta;
+    double tbeta;            /* parameter beta */
-    double tdelay;
+    double tdelay;           /* delay until first pulse */
-    double inull;
+    double inull;            /* max. current of pulse */
-    double out;
+    double tperiod;          /* pulse repetition period */
-    double tcurr = TIME;
+    double out;              /* output current */
+    double *last_t_value;    /* static storage of next pulse time */
+    int *pulse_number;       /* static storage of next pulse time */
+    double tcurr = TIME;     /* current simulation time */
 
 
     /* Retrieve frequently used parameters... */
@@ -121,14 +140,35 @@ void cm_seegen(ARGS)  /* structure holding parms,
     talpha = PARAM(talpha);
     tbeta = PARAM(tbeta);
     tdelay = PARAM(tdelay);
+    tperiod = PARAM(tperiod);
     inull = PARAM(inull);
 
-    if (tcurr < tdelay)
+    if (INIT==1) {
-        out = 0;
+        /* Allocate storage for last_t_value */
-    else
+        STATIC_VAR(last_t_value) = (double *) malloc(sizeof(double));
-        out = inull * (exp(-(tcurr-tdelay)/talpha) - exp(-(tcurr-tdelay)/tbeta));
+        last_t_value = (double *) STATIC_VAR(last_t_value);
+        *last_t_value = tdelay;
+        STATIC_VAR(pulse_number) = (int *) malloc(sizeof(int));
+        pulse_number = (int *) STATIC_VAR(pulse_number);
+        *pulse_number = 1;
+    }
+    else {
 
-    OUTPUT(out) = out;
+        last_t_value = (double *) STATIC_VAR(last_t_value);
+        pulse_number = (int *) STATIC_VAR(pulse_number);
+
+        if (tcurr < *last_t_value)
+            out = 0;
+        else
+            out = inull * (exp(-(tcurr-*last_t_value)/talpha) - exp(-(tcurr-*last_t_value)/tbeta));
+
+        if (tcurr > *last_t_value + tperiod * 0.9) {
+            *last_t_value = *last_t_value + tperiod;
+            (*pulse_number)++;
+        }
+        if (*pulse_number - 1 < PORT_SIZE(out))
+           OUTPUT(out[*pulse_number - 1]) = out;
+    }
 }
 
 

src/xspice/icm/xtradev/seegenerator/ifspec.ifs

@@ -30,13 +30,13 @@ Description:           "single event effect generator"
 
 PORT_TABLE:
 
-Port_Name:               out
+Port_Name:             out
-Description:             "output" 
+Description:          "output" 
-Direction:               out
+Direction:             out
 Default_Type:          i
 Allowed_Types:         [i,id]
-Vector:                 no
+Vector:                yes
-Vector_Bounds:          -
+Vector_Bounds:         [1 -]
 Null_Allowed:          no
 
 
@@ -44,23 +44,46 @@ PARAMETER_TABLE:
 
 Parameter_Name:     talpha                   tbeta
 Description:        "alpha"                 "beta"
-Data_Type:          real                        real
+Data_Type:          real                     real
 Default_Value:      500e-12                  10e-12
-Limits:             -                           -
+Limits:             -                        -
-Vector:              no                          no
+Vector:              no                      no
-Vector_Bounds:       -                           -
+Vector_Bounds:       -                       -
-Null_Allowed:       yes                         yes
+Null_Allowed:       yes                      yes
 
 
 PARAMETER_TABLE:
 
-
 Parameter_Name:     tdelay                inull
 Description:        "pulse delay"         "max current"
-Data_Type:          real                   real   
+Data_Type:          real                   real
-Default_Value:      0                      200e-6   
+Default_Value:      0                      200e-6
-Limits:             -                        -       
+Limits:             -                      -
-Vector:              no                          no     
+Vector:              no                    no
-Vector_Bounds:       -                           -      
+Vector_Bounds:       -                      -
-Null_Allowed:       yes                         yes    
+Null_Allowed:       yes                    yes
 
+PARAMETER_TABLE:
+
+Parameter_Name:     tperiod
+Description:        "pulse repetition"
+Data_Type:          real
+Default_Value:      0
+Limits:             -
+Vector:              no
+Vector_Bounds:       -
+Null_Allowed:       yes
+
+STATIC_VAR_TABLE:
+
+Static_Var_Name:    last_t_value
+Data_Type:          pointer
+Vector:              no
+Description:        "next pulse start time"
+
+STATIC_VAR_TABLE:
+
+Static_Var_Name:    pulse_number
+Data_Type:          pointer
+Vector:              no
+Description:        "number of pulse"