diff --git a/tests/emulator/sa_client_central_unit.cpp b/tests/emulator/sa_client_central_unit.cpp
index d35c4ef..a29b306 100644
--- a/tests/emulator/sa_client_central_unit.cpp
+++ b/tests/emulator/sa_client_central_unit.cpp
@@ -84,7 +84,7 @@ int main_loop()
 			case COMMLAYER_RET_TIMEOUT:
 			{
 				// regular processing will be done below in the next block
-				printf( "no reply from comm stack received; the last message (if any) will be resent by timer\n" );
+				printf( "just waiting...\n" );
 				zepto_response_to_request( MEMORY_HANDLE_MAIN_LOOP );
 				goto wait_for_comm_event;
 				break;
@@ -130,6 +130,7 @@ int main_loop()
 		zepto_response_to_request( MEMORY_HANDLE_MAIN_LOOP );
 
 	send_command:
+		printf( "=============================================Msg is about to be sent; rq_size: %d, rsp_size: %d\n", ugly_hook_get_request_size( MEMORY_HANDLE_MAIN_LOOP ), ugly_hook_get_response_size( MEMORY_HANDLE_MAIN_LOOP ) );
 		send_to_commm_stack( MEMORY_HANDLE_MAIN_LOOP );
 	}
 
diff --git a/tests/emulator/sa_client_comm_stack.cpp b/tests/emulator/sa_client_comm_stack.cpp
index 2136b77..00e9792 100644
--- a/tests/emulator/sa_client_comm_stack.cpp
+++ b/tests/emulator/sa_client_comm_stack.cpp
@@ -89,6 +89,7 @@ int main_loop()
 wait_for_comm_event:
 		ret_code = wait_for_communication_event( MEMORY_HANDLE_MAIN_LOOP, timer_val*100 ); // TODO: recalculation
 		zepto_response_to_request( MEMORY_HANDLE_MAIN_LOOP );
+		printf( "=============================================Msg wait event; ret = %d, rq_size: %d, rsp_size: %d\n", ret_code, ugly_hook_get_request_size( MEMORY_HANDLE_MAIN_LOOP ), ugly_hook_get_response_size( MEMORY_HANDLE_MAIN_LOOP ) );
 
 		switch ( ret_code )
 		{
@@ -314,6 +315,7 @@ int main_loop()
 			
 		// 5. SAGDP
 client_received:
+		printf( "@client_received: rq_size: %d, rsp_size: %d\n", ugly_hook_get_request_size( MEMORY_HANDLE_MAIN_LOOP ), ugly_hook_get_response_size( MEMORY_HANDLE_MAIN_LOOP ) );
 		sa_get_time( &(tact.tv) ); tact.action = 0;
 		ret_code = handler_sagdp_receive_hlp( &tact, NULL, MEMORY_HANDLE_MAIN_LOOP, &sagdp_data );
 		if ( ret_code == SAGDP_RET_NEED_NONCE )
diff --git a/tests/emulator/sa_server.cpp b/tests/emulator/sa_server.cpp
index 9e1a598..bbf0fe5 100644
--- a/tests/emulator/sa_server.cpp
+++ b/tests/emulator/sa_server.cpp
@@ -16,8 +16,8 @@ Copyright (C) 2015 OLogN Technologies AG
 *******************************************************************************/
 
 
-#define MODEL_IN_EFFECT 1
-//#define MODEL_IN_EFFECT 2
+//#define MODEL_IN_EFFECT 1
+#define MODEL_IN_EFFECT 2
 
 
 #include "sa-common.h"
diff --git a/tests/emulator/sa_test_control_prog.cpp b/tests/emulator/sa_test_control_prog.cpp
index 499cf21..f1868b9 100644
--- a/tests/emulator/sa_test_control_prog.cpp
+++ b/tests/emulator/sa_test_control_prog.cpp
@@ -164,11 +164,15 @@ uint8_t default_test_control_program_accept_reply_continue( void* control_prog_s
 	}
 	else
 	{
-		assert( ps->chain_ini_size == 2 );
+//		assert( ps->chain_ini_size == 2 );
+		// need to add explicit exit command to specify packet status-in-chain of the reply
+		zepto_write_uint8( reply, ZEPTOVM_OP_EXIT );
+		zepto_write_uint8( reply, (uint8_t)SAGDP_P_STATUS_TERMINATING ); // TODO: if padding is required, add necessary data here
+		reply_sz = zepto_writer_get_response_size( reply );
 	}
 	uint8_t hdr = SACCP_NEW_PROGRAM; //TODO: we may want to add extra headers
 	zepto_write_prepend_byte( reply, hdr );
-	zepto_write_prepend_byte( reply, SAGDP_P_STATUS_FIRST );
+	zepto_write_prepend_byte( reply, SAGDP_P_STATUS_INTERMEDIATE );
 
 
 	// return status
diff --git a/tests/emulator/saccp_protocol.cpp b/tests/emulator/saccp_protocol.cpp
index 070e487..df68340 100644
--- a/tests/emulator/saccp_protocol.cpp
+++ b/tests/emulator/saccp_protocol.cpp
@@ -61,12 +61,12 @@ uint8_t handler_sacpp_continue_chain( MEMORY_HANDLE mem_h, void* control_prog_st
 	uint8_t hdr = SACCP_NEW_PROGRAM; //TODO: we may want to add extra headers
 	zepto_write_prepend_byte( mem_h, hdr );
 	zepto_write_prepend_byte( mem_h, SAGDP_P_STATUS_FIRST );*/
-	default_test_control_program_start_new( control_prog_state, mem_h );
+	default_test_control_program_accept_reply_continue( control_prog_state, mem_h );
 	return SACCP_RET_PASS_LOWER;
 }
 
 uint8_t saccp_control_program_process_incoming( MEMORY_HANDLE mem_h, parser_obj* po, uint16_t sz, void* control_prog_state )
-{
+{assert(0);
 	// TODO: process
 /*	uint8_t buff[100];
 	memset( buff, '?', 99 );