Remove unused reset_state param; do not allow null in and out, so there is at least 1 input and 1 output.

src/xspice/icm/digital/d_process/ifspec.ifs

@@ -34,7 +34,7 @@ Default_Type:        d              d
 Allowed_Types:       [d]            [d]
 Vector:              yes            no
 Vector_Bounds:       -              -
-Null_Allowed:        yes            no
+Null_Allowed:        no             no
 
 
 PORT_TABLE:
@@ -47,7 +47,7 @@ Default_Type:        d              d
 Allowed_Types:       [d]            [d]
 Vector:              no             yes
 Vector_Bounds:       -              [1 -]
-Null_Allowed:        yes            yes
+Null_Allowed:        yes            no
 
 
 
@@ -93,19 +93,6 @@ Null_Allowed:       yes
 PARAMETER_TABLE:
 
 
-Parameter_Name:     reset_state
-Description:        "default state on RESET & at DC"
-Data_Type:          int
-Default_Value:      0
-Limits:             -
-Vector:             no
-Vector_Bounds:      -
-Null_Allowed:       no
-
-
-PARAMETER_TABLE:
-
-
 Parameter_Name:     input_load
 Description:        "input loading capacitance (F)"
 Data_Type:          real
@@ -127,6 +114,7 @@ Limits:             -
 Vector:             no
 Vector_Bounds:      -
 Null_Allowed:       no
+
 PARAMETER_TABLE: