diff --git a/main.c b/main.c
index c7473ec..929a5f3 100644
--- a/main.c
+++ b/main.c
@@ -452,9 +452,15 @@ calculate:
     c = *p++ - '0';
     // c = to_upper(*p) - 'A' + 10
     if (c >= 'A' - '0') c = (c&(~0x20)) - ('A' - '0') + 10;
-    if (c >= radix) return value;
+    if (c >= radix) break;
     value = value * radix + c;
   }
+  switch (*(--p)) {
+  case 'k': value *= 1000; break;
+  case 'M': value *= 1000000; break;
+  case 'G': value *= 1000000000; break;
+  }
+  return value;
 }
 
 double
@@ -2277,6 +2283,7 @@ static const VNAShellCommand commands[] =
     {"recall"      , cmd_recall      , CMD_WAIT_MUTEX},
 #endif
     {"trace"       , cmd_trace       , 0},
+    {"trigger"     , cmd_trigger     , 0},
     {"marker"      , cmd_marker      , 0},
 #ifdef __VNA__
     {"edelay"      , cmd_edelay      , 0},
@@ -2562,7 +2569,7 @@ int mySerialReadline(unsigned char *buf, int len)
 // Main thread stack size defined in makefile USE_PROCESS_STACKSIZE = 0x200
 // Profile stack usage (enable threads command by def ENABLE_THREADS_COMMAND) show:
 // Stack maximum usage = 472 bytes (need test more and run all commands), free stack = 40 bytes
-//
+
 int main(void)
 {
   halInit();
diff --git a/sa_cmd.c b/sa_cmd.c
index 3061f21..57c4bee 100644
--- a/sa_cmd.c
+++ b/sa_cmd.c
@@ -138,7 +138,10 @@ VNA_SHELL_FUNCTION(cmd_attenuate)
 VNA_SHELL_FUNCTION(cmd_level)
 {
   if (argc != 1) {
-    shell_printf("usage: level -76..-6\r\n");
+    if (setting.mode==M_GENLOW)
+      shell_printf("usage: level -76..-6\r\n");
+    if (setting.mode==M_GENHIGH)
+      shell_printf("usage: level -38..13\r\n");
     return;
   }
   float f = my_atof(argv[0]);
@@ -222,6 +225,37 @@ VNA_SHELL_FUNCTION(cmd_if)
 }
 
 
+VNA_SHELL_FUNCTION(cmd_trigger)
+{
+  if (argc == 0)
+    goto usage;
+
+  if (( '0' <= argv[0][0] && argv[0][0] <= '9') || argv[0][0] == '-') {
+    float t = my_atof(argv[0]);
+    if (setting.trigger == T_AUTO )
+      set_trigger(T_NORMAL);
+    set_trigger_level(t);
+    goto update;
+  }
+  static const char cmd_trigger_list[] = "auto|normal|single";
+  if (argc == 1) {
+    int type = get_str_index(argv[0], cmd_trigger_list);
+    if (type >= 0) {
+      set_trigger(type);
+      goto update;
+    }
+    goto usage;
+  }
+update:
+  redraw_request |= REDRAW_CAL_STATUS | REDRAW_AREA;
+  completed = true;
+  return;
+usage:
+  shell_printf("trigger {value}\r\n"\
+               "trigger {%s}\r\n" , cmd_trigger_list);
+}
+
+
 VNA_SHELL_FUNCTION(cmd_v)
 
 
@@ -339,8 +373,9 @@ VNA_SHELL_FUNCTION(cmd_d)
 {
   (void) argc;
   (void) argv;
-//  int32_t a = my_atoi(argv[0]);
-//  setting.drive = a;
+  int32_t a = my_atoi(argv[0]);
+  setting.drive=a;
+  dirty = true;
 }
 
 
diff --git a/sa_core.c b/sa_core.c
index 9ed5eae..ecdcf04 100644
--- a/sa_core.c
+++ b/sa_core.c
@@ -38,8 +38,22 @@ int const reffer_freq[] = {30000000, 15000000, 10000000, 4000000, 3000000, 20000
 
 int in_selftest = false;
 
+const char *dummy = "this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available\
+this is a very long string only used to fill memory so I know when the memory is full and I can remove some of this string to make more memory available"
+;
+
 void reset_settings(int m)
 {
+  strcpy((char *)spi_buffer, dummy);
   setting.mode = m;
   setting.unit_scale_index = 0;
   setting.unit_scale = 1;
@@ -301,10 +315,21 @@ float get_attenuation(void)
   return(setting.attenuate);
 }
 
+static const int drive_dBm [16] = {-38,-35,-33,-30,-27,-24,-21,-19,-7,-4,-2, 1, 4, 7, 10, 13};
+
 void set_level(float v)
 {
-  setting.level = v;
-  set_attenuation((int)v);
+  if (setting.mode == M_GENHIGH) {
+    int d = 0;
+    while (drive_dBm[d] < v - 1 && d < 16)
+      d++;
+    if (d == 8 && v < -12)  // Round towards closest level
+      d = 7;
+    set_drive(d);
+  } else {
+    setting.level = v;
+    set_attenuation((int)v);
+  }
   dirty = true;
 }
 
@@ -424,8 +449,10 @@ void set_RBW(int v)
 }
 
 #ifdef __SPUR__
-void SetSpur(int v)
+void set_spur(int v)
 {
+  if (setting.mode!=M_LOW)
+    return;
   setting.spur = v;
   if (setting.spur && actual_rbw > 360)
     set_RBW(300);
diff --git a/ui_sa.c b/ui_sa.c
index 578573f..9016933 100644
--- a/ui_sa.c
+++ b/ui_sa.c
@@ -742,9 +742,9 @@ static void menu_spur_cb(int item, uint8_t data)
   (void)data;
   (void)item;
   if (setting.spur)
-    SetSpur(0);
+    set_spur(0);
   else
-    SetSpur(1); // must be 0 or 1 !!!!
+    set_spur(1); // must be 0 or 1 !!!!
 //  menu_move_back();
   ui_mode_normal();
   redraw_request |= REDRAW_CAL_STATUS;