diff --git a/CMakeLists.txt b/CMakeLists.txt
index 11a8b6c..52d8cab 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,10 @@ include(GNUInstallDirs)
 #  SET(CMAKE_INSTALL_PREFIX /usr/local CACHE PATH "Set install prefix" FORCE)
 #ENDIF(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wshadow -Wall -O0 -g -DSPC_DEBUG=0")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wshadow -Wall -O0 -g")
+set(CMAKE_CXX_FLAGS_DEBUG  "${CMAKE_CXX_FLAGS} -Wshadow -Wall -O0 -g")
+#set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -Wshadow -Wall -O0 -g -DSP_DEBUG -DSPC_DEBUG")
+
 set(CPACK_PACKAGING_INSTALL_PREFIX "/")
 #set(CMAKE_INSTALL_PREFIX "/")
 
diff --git a/drivers/Spectrum-MI40xxSeries/CMakeLists.txt b/drivers/Spectrum-MI40xxSeries/CMakeLists.txt
index 6e16259..17b2e2c 100644
--- a/drivers/Spectrum-MI40xxSeries/CMakeLists.txt
+++ b/drivers/Spectrum-MI40xxSeries/CMakeLists.txt
@@ -48,3 +48,8 @@ else()
 endif()
 add_library(Spectrum_MI40xxSeries STATIC Spectrum-MI40xxSeries.cpp GatedData.cpp ${SPC_HEADERS})
 
+#add_executable(hw_test_ext hw_test_extclock.cpp GatedData.cpp)
+#target_sources(hw_test_ext PRIVATE ${SPC_HEADERS})
+
+#add_executable(hw_test_int hw_test_intclock.cpp GatedData.cpp)
+#target_include_directories(hw_test_int ${SPC_HEADERS})
diff --git a/drivers/Spectrum-MI40xxSeries/Makefile b/drivers/Spectrum-MI40xxSeries/Makefile
index 902bfec..224f2cb 100644
--- a/drivers/Spectrum-MI40xxSeries/Makefile
+++ b/drivers/Spectrum-MI40xxSeries/Makefile
@@ -5,6 +5,7 @@ AR=ar
 
 SPC_HEADERS = include/spcerr.h include/regs.h include/dlltyp.h include/spcioctl.inc
 SPC_ZIP = ../Spectrum-M2i40xxSeries/drv_spcm_linux_drv_v214b5633.zip
+#SPC_ZIP = ../Spectrum-MI40xxSeries/drv_header_v402b6844.zip
 
 all: clean $(SPC_HEADERS) patch Spectrum-MI40xxSeries.a hw_test_int hw_test_ext
 
diff --git a/machines/general.cpp b/machines/general.cpp
index 5f13588..c44be95 100644
--- a/machines/general.cpp
+++ b/machines/general.cpp
@@ -36,6 +36,7 @@ class general_hardware: public hardware
     PTS* my_pts;
     SpinCorePulseBlaster24Bit* my_pulseblaster;
     SpectrumMI40xxSeries* my_adc;
+    bool with_sync;
 
 public:
     general_hardware()
@@ -91,6 +92,7 @@ public:
             USRCONF = 1;
         if (!(SYSCONF | USRCONF))
             throw(core_exception("configuration failed!\n"));
+
         printf("done!\n");
         /* configure ADC card */
         ttlout trigger;
@@ -98,8 +100,7 @@ public:
         if (error)
             g_error(error->message);
         error = NULL;
-        //g_error(error->message);
-        trigger.ttls = 1 << g_key_file_get_integer(cfg_file, "ADC", "trigger_line", &error);
+        trigger.ttls = (channel_array) (1 << g_key_file_get_integer(cfg_file, "ADC", "trigger_line", &error));
         if (error)
             g_error(error->message);
         error = NULL;
@@ -112,7 +113,7 @@ public:
             g_error(error->message);
 
         error = NULL;
-        my_adc = new SpectrumMI40xxSeries(trigger, impedance, ext_reference_clock);
+        my_adc = new SpectrumMI40xxSeries(trigger, (float) impedance, ext_reference_clock);
 
         /* configure PulseBlaster */
         int pb_id = g_key_file_get_integer(cfg_file, "PB", "id", &error);
@@ -128,11 +129,15 @@ public:
             g_error(error->message);
         error = NULL;
         int pb_sync = 0;
-        if (pb_sync_bit != 128)
+        if (pb_sync_bit != 128) {
             pb_sync = 1 << pb_sync_bit;
-
-        my_pulseblaster = new SpinCorePulseBlaster24Bit(pb_id, pb_refclock, pb_sync);
-
+            with_sync = 1;
+            my_pulseblaster = new SpinCorePulseBlaster24Bit(pb_id, pb_refclock, pb_sync);
+        }
+        else {
+            with_sync = 0;
+            my_pulseblaster = new SpinCorePulseBlaster24Bit(pb_id, pb_refclock,0);
+        }
         /* configure PTS */
         int pts_id = g_key_file_get_integer(cfg_file, "PTS", "id", &error);
         if (error)
@@ -140,7 +145,7 @@ public:
         error = NULL;
         my_pts = new PTS_latched(pts_id);
         // PTS 500 has 0.36 or 0.72 above 200MHz ;  PTS 310 has 0.225 degrees/step
-        my_pts->phase_step = g_key_file_get_double(cfg_file, "PTS", "phase_stepsize", &error);
+        my_pts->phase_step = (float) g_key_file_get_double(cfg_file, "PTS", "phase_stepsize", &error);
         if (error)
             g_error(error->message);
         error = NULL;
@@ -158,22 +163,36 @@ public:
         {
             state* work_copy = exp.copy_flat();
             if (work_copy == NULL)
-                return new error_result(1, "could create work copy of experiment sequence");
+                return new error_result(1, "could not create work copy of experiment sequence");
             try
             {
                 if (the_fg != NULL)
                     the_fg->set_frequency(*work_copy);
                 if (the_adc != NULL)
                     the_adc->set_daq(*work_copy);
+                else
+                    throw ADC_exception("the_adc == NULL\n");
                 // the pulse generator is necessary
-                my_pulseblaster->run_pulse_program_w_sync(*work_copy, my_adc->get_sample_clock_frequency());
+                if (with_sync) {
+                    my_pulseblaster->run_pulse_program_w_sync(*work_copy, my_adc->get_sample_clock_frequency());
+
+                }
+                else {
+                    //experiment_prepare_dacs(work_copy);
+                    //experiment_run_pulse_program(work_copy);
+                    the_pg->run_pulse_program(*work_copy);
+                }
                 // wait for pulse generator
                 the_pg->wait_till_end();
+
                 // after that, the result must be available
-                if (the_adc != NULL)
+                if (the_adc != NULL) {
                     r = the_adc->get_samples();
-                else
+                }
+                else {
                     r = new adc_result(1, 0, NULL);
+                    throw ADC_exception("ADC result not available");
+                }
             }
             catch (const RecoverableException &e)
             {