diff --git a/.gitignore b/.gitignore
index 5ceb3864..995e1e8a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 venv
+*.pyc
+core
diff --git a/src/raspberrypi/.vscode/launch.json b/src/raspberrypi/.vscode/launch.json
index 4ac5ab4b..b58c19b7 100644
--- a/src/raspberrypi/.vscode/launch.json
+++ b/src/raspberrypi/.vscode/launch.json
@@ -8,13 +8,15 @@
             "name": "(gdb) Launch",
             "type": "cppdbg",
             "request": "launch",
-            "program": "${workspaceFolder}/bin/rascsi",
+            "program": "${workspaceFolder}/bin/fullspec/rascsi",
             "args": [],
             "stopAtEntry": true,
             "cwd": "${workspaceFolder}",
             "environment": [],
             "externalConsole": false,
             "MIMode": "gdb",
+            "targetArchitecture": "arm",
+            "miDebuggerPath": "${workspaceFolder}/launch_sudo.sh",
             "setupCommands": [
                 {
                     "description": "Enable pretty-printing for gdb",
diff --git a/src/raspberrypi/.vscode/tasks.json b/src/raspberrypi/.vscode/tasks.json
index eeedfe8a..850ac6dd 100644
--- a/src/raspberrypi/.vscode/tasks.json
+++ b/src/raspberrypi/.vscode/tasks.json
@@ -5,7 +5,7 @@
         "type": "shell",
         "label": "g++ build active file",
         "command": "make",
-        "args": ["all", "DEBUG=1"],
+        "args": ["all", "DEBUG=1", "-j4"],
         "options": {
           "cwd": "${workspaceFolder}/"
         },
diff --git a/src/raspberrypi/Makefile b/src/raspberrypi/Makefile
index c2424c65..9a9984be 100644
--- a/src/raspberrypi/Makefile
+++ b/src/raspberrypi/Makefile
@@ -75,6 +75,7 @@ SRC_RASCSI = \
 	gpiobus.cpp \
 	filepath.cpp \
 	fileio.cpp\
+	os.cpp\
 	rascsi_version.cpp
 #	os.cpp
 #	rasctl_command.cpp
diff --git a/src/raspberrypi/controllers/scsidev_ctrl.cpp b/src/raspberrypi/controllers/scsidev_ctrl.cpp
index ce5417a2..da9b6b79 100644
--- a/src/raspberrypi/controllers/scsidev_ctrl.cpp
+++ b/src/raspberrypi/controllers/scsidev_ctrl.cpp
@@ -559,7 +559,7 @@ void FASTCALL SCSIDEV::CmdInquiry()
 	if (disk) {
 		major = (DWORD)(RASCSI >> 8);
 		minor = (DWORD)(RASCSI & 0xff);
-		LOGINFO("%s Buffer size is %d",__PRETTY_FUNCTION__, ctrl.bufsize);
+		LOGTRACE("%s Buffer size is %d",__PRETTY_FUNCTION__, ctrl.bufsize);
 		ctrl.length =
 			ctrl.unit[lun]->Inquiry(ctrl.cmd, ctrl.buffer, major, minor);
 	} else {
diff --git a/src/raspberrypi/devices/ctapdriver.cpp b/src/raspberrypi/devices/ctapdriver.cpp
index fd5c941c..188fda41 100644
--- a/src/raspberrypi/devices/ctapdriver.cpp
+++ b/src/raspberrypi/devices/ctapdriver.cpp
@@ -48,35 +48,44 @@ BOOL FASTCALL CTapDriver::Init()
 
 	ASSERT(this);
 
+	LOGTRACE("Opening Tap device");
 	// TAP device initilization
 	if ((m_hTAP = open("/dev/net/tun", O_RDWR)) < 0) {
 		LOGERROR("Error: can't open tun. Errno: %d %s", errno, strerror(errno));
 		return FALSE;
 	}
+	LOGTRACE("Opened tap device %d",m_hTAP);
 
+	
 	// IFF_NO_PI for no extra packet information
 	memset(&ifr, 0, sizeof(ifr));
 	ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
 	strncpy(ifr.ifr_name, dev, IFNAMSIZ);
+	LOGTRACE("Going to open %s", ifr.ifr_name);
 	if ((ret = ioctl(m_hTAP, TUNSETIFF, (void *)&ifr)) < 0) {
 		LOGERROR("Error: can't ioctl TUNSETIFF. Errno: %d %s", errno, strerror(errno));
 		close(m_hTAP);
 		return FALSE;
 	}
+	LOGTRACE("return code from ioctl was %d", ret);
 
-	// Force the tap interface up
 	LOGDEBUG("ip link set ras0 up");
-	system("ip link set ras0 up");
+	ret = run_system_cmd("ip link set ras0 up");
+	LOGTRACE("return code from ip link set ras0 up was %d", ret);
+ 
 	LOGDEBUG("brctl addif rascsi_bridge ras0");
-	system("brctl addif rascsi_bridge ras0");
-
+	ret = run_system_cmd("brctl addif rascsi_bridge ras0");
+	LOGTRACE("return code from brctl addif rascsi_bridge ras0 was %d", ret);
+	
 	// Get MAC address
+	LOGTRACE("Getting the MAC address");
 	ifr.ifr_addr.sa_family = AF_INET;
 	if ((ret = ioctl(m_hTAP, SIOCGIFHWADDR, &ifr)) < 0) {
 		LOGERROR("Error: can't ioctl SIOCGIFHWADDR. Errno: %d %s", errno, strerror(errno));
 		close(m_hTAP);
 		return FALSE;
 	}
+	LOGTRACE("got the mac");
 
 	// Save MAC address
 	memcpy(m_MacAddr, ifr.ifr_hwaddr.sa_data, sizeof(m_MacAddr));
@@ -141,20 +150,20 @@ BOOL FASTCALL CTapDriver::Init()
 void FASTCALL CTapDriver::Cleanup()
 {
 	ASSERT(this);
-
+	int result;
 
 	LOGDEBUG("brctl delif rascsi_bridge ras0");
-	system("brctl delif rascsi_bridge ras0");
+	result = run_system_cmd("brctl delif rascsi_bridge ras0");
+	if(result != EXIT_SUCCESS){
+		LOGWARN("Warning: The brctl delif command failed.");
+		LOGWARN("You may need to manually remove the ras0 tap device from the bridge");
+	}
 
-
-	// Release TAP device
+	// Release TAP defice
 	if (m_hTAP != -1) {
 		close(m_hTAP);
 		m_hTAP = -1;
 	}
-
-
-
 }
 
 //---------------------------------------------------------------------------
diff --git a/src/raspberrypi/devices/disk.cpp b/src/raspberrypi/devices/disk.cpp
index e97142ed..4701b2ff 100644
--- a/src/raspberrypi/devices/disk.cpp
+++ b/src/raspberrypi/devices/disk.cpp
@@ -974,6 +974,7 @@ BOOL FASTCALL Disk::IsNULL() const
 	}
 	return FALSE;
 }
+
 //---------------------------------------------------------------------------
 //
 //	Retrieve the disk's ID
@@ -984,6 +985,37 @@ DWORD FASTCALL Disk::GetID() const
 	return disk.id; 
 }
 
+
+//---------------------------------------------------------------------------
+//
+//	Get cache writeback mode
+//
+//---------------------------------------------------------------------------
+BOOL FASTCALL Disk::IsCacheWB() 
+{ 
+	return cache_wb; 
+}
+ 
+//---------------------------------------------------------------------------
+//
+//	Set cache writeback mode
+//
+//---------------------------------------------------------------------------
+void FASTCALL Disk::SetCacheWB(BOOL enable) 
+{ 
+	cache_wb = enable; 
+}
+
+//---------------------------------------------------------------------------
+//
+//	Set unsupported command
+//
+//---------------------------------------------------------------------------
+void FASTCALL Disk::InvalidCmd()
+{ 
+	disk.code = DISK_INVALIDCMD; 
+}
+
 //---------------------------------------------------------------------------
 //
 //	SASI Check
diff --git a/src/raspberrypi/devices/disk.h b/src/raspberrypi/devices/disk.h
index ae9e5de9..5f8e9da3 100644
--- a/src/raspberrypi/devices/disk.h
+++ b/src/raspberrypi/devices/disk.h
@@ -328,13 +328,13 @@ public:
 										// PLAY AUDIO MSF command
 	virtual BOOL FASTCALL PlayAudioTrack(const DWORD *cdb);
 										// PLAY AUDIO TRACK command
-	void FASTCALL InvalidCmd()			{ disk.code = DISK_INVALIDCMD; }
+	void FASTCALL InvalidCmd();
 										// Unsupported command
 
 	// Other
-	BOOL IsCacheWB() { return cache_wb; }
+	BOOL FASTCALL IsCacheWB();
 										// Get cache writeback mode
-	void SetCacheWB(BOOL enable) { cache_wb = enable; }
+	void FASTCALL SetCacheWB(BOOL enable);
 										// Set cache writeback mode
 
 protected:
diff --git a/src/raspberrypi/devices/scsi_daynaport.cpp b/src/raspberrypi/devices/scsi_daynaport.cpp
index ff8ec5f6..6eebad4c 100644
--- a/src/raspberrypi/devices/scsi_daynaport.cpp
+++ b/src/raspberrypi/devices/scsi_daynaport.cpp
@@ -38,10 +38,6 @@ const char* SCSIDaynaPort::m_firmware_version = "01.00.00";
 const BYTE SCSIDaynaPort::m_bcast_addr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
 const BYTE SCSIDaynaPort::m_apple_talk_addr[6] = { 0x09, 0x00, 0x07, 0xff, 0xff, 0xff };
 
-#ifndef NDEBUG
-static DWORD file_counter = 0;
-#endif
-
 //---------------------------------------------------------------------------
 //
 //	Constructor
@@ -63,11 +59,13 @@ SCSIDaynaPort::SCSIDaynaPort() : Disk()
 		LOGINFO("Tap interface created")
 	}
 
+	LOGTRACE("%s this->reset()", __PRETTY_FUNCTION__);
 	this->Reset();
 	disk.ready = true;
 	disk.reset = false;
 
 	// Generate MAC Address
+	LOGTRACE("%s memset(m_mac_addr, 0x00, 6);", __PRETTY_FUNCTION__);
 	memset(m_mac_addr, 0x00, 6);
 
 	// if (m_bTapEnable) {
@@ -76,6 +74,7 @@ SCSIDaynaPort::SCSIDaynaPort() : Disk()
 	// }
 	// !!!!!!!!!!!!!!!!! For now, hard code the MAC address. Its annoying when it keeps changing during development!
 	// TODO: Remove this hard-coded address
+	LOGTRACE("%s m_mac_addr[0]=0x00;", __PRETTY_FUNCTION__);
 	m_mac_addr[0]=0x00;
 	m_mac_addr[1]=0x80;
 	m_mac_addr[2]=0x19;
@@ -299,8 +298,6 @@ int FASTCALL SCSIDaynaPort::Read(const DWORD *cdb, BYTE *buf, DWORD block)
 				buf[5] = 0;
 			}
 
-			LOGTRACE("%s Packet of size %d received [Counter: %d]", __PRETTY_FUNCTION__, (int)rx_packet_size, (int)file_counter);
-
 			// Return the packet size + 2 for the length + 4 for the flag field
 			// The CRC was already appended by the ctapdriver
 			return rx_packet_size + m_read_header_size;
diff --git a/src/raspberrypi/os.cpp b/src/raspberrypi/os.cpp
new file mode 100644
index 00000000..50711802
--- /dev/null
+++ b/src/raspberrypi/os.cpp
@@ -0,0 +1,35 @@
+//---------------------------------------------------------------------------
+//
+//	SCSI Target Emulator RaSCSI (*^..^*)
+//	for Raspberry Pi
+//
+//	Powered by XM6 TypeG Technology.
+//	Copyright (C) 2016-2020 GIMONS
+//  Copyright (C) 2020-2021 akuker
+//
+//	[ OS related definitions ]
+//
+//---------------------------------------------------------------------------
+
+#include "os.h"
+#include <sys/wait.h>
+
+
+//---------------------------------------------------------------------------
+//
+//	Run system command and wait for it to finish
+//
+//---------------------------------------------------------------------------
+int run_system_cmd(const char* command)
+{
+	pid_t pid;
+	int result;
+	int status = 0;
+	pid=fork();
+	if(pid == 0){
+		result = system(command);
+		exit(result);
+	}
+	waitpid(pid, &status, 0);
+	return status;
+}
\ No newline at end of file
diff --git a/src/raspberrypi/os.h b/src/raspberrypi/os.h
index cb145f7e..9cb9f31e 100644
--- a/src/raspberrypi/os.h
+++ b/src/raspberrypi/os.h
@@ -155,4 +155,7 @@ typedef const char *LPCSTR;
 #define xstrcasecmp strcasecmp
 #define xstrncasecmp strncasecmp
 
+// Run system command and wait for it to finish
+extern int run_system_cmd(const char* command);
+
 #endif	// os_h
diff --git a/src/raspberrypi/os_integration/rascsi.service b/src/raspberrypi/os_integration/rascsi.service
index d5072387..62fe6528 100644
--- a/src/raspberrypi/os_integration/rascsi.service
+++ b/src/raspberrypi/os_integration/rascsi.service
@@ -9,7 +9,7 @@ ExecStart=/usr/local/bin/rascsi
 # Example: If you want to automatically attach a hard disk at startup, change
 # the ExecStart line to:
 # ExecStart=/usr/local/bin/rascsi -ID1 /home/pi/images/harddisk.hda
-ExecStop=/usr/local/bin/rasctl -stop
+# This functionality isn't implmented yet: ExecStop=/usr/local/bin/rasctl -stop
 StandardOutput=syslog
 StandardError=syslog
 SyslogIdentifier=RASCSI
diff --git a/src/raspberrypi/rascsi.cpp b/src/raspberrypi/rascsi.cpp
index 331359a3..b08924a6 100644
--- a/src/raspberrypi/rascsi.cpp
+++ b/src/raspberrypi/rascsi.cpp
@@ -297,6 +297,8 @@ void ListDevice(FILE *fp)
 		// mount status output
 		if (pUnit->GetID() == MAKEID('S', 'C', 'B', 'R')) {
 			FPRT(fp, "%s", "HOST BRIDGE");
+		} else if (pUnit->GetID() == MAKEID('S', 'C', 'D', 'P')) {
+			FPRT(fp, "%s", "DaynaPort SCSI/Link");
 		} else {
 			pUnit->GetPath(filepath);
 			FPRT(fp, "%s",
@@ -526,6 +528,7 @@ BOOL ProcessCmd(FILE *fp, int id, int un, int cmd, int type, char *file)
 			// 	break;
 			case rasctl_dev_daynaport: // DaynaPort SCSI Link
 				pUnit = new SCSIDaynaPort();
+				LOGTRACE("Done creating SCSIDayanPort");
 				break;
 			default:
 				FPRT(fp,	"Error : Invalid device type\n");
@@ -533,7 +536,7 @@ BOOL ProcessCmd(FILE *fp, int id, int un, int cmd, int type, char *file)
 		}
 
 		// drive checks files
-		if (type <= 1 || (type <= 3 && xstrcasecmp(file, "-") != 0)) {
+		if (type <= rasctl_dev_scsi_hd || (type <= rasctl_dev_cd && xstrcasecmp(file, "-") != 0)) {
 			// Set the Path
 			filepath.SetPath(file);