diff --git a/components/tme/scc.c b/components/tme/scc.c
index 9fee033..e8d2f6d 100644
--- a/components/tme/scc.c
+++ b/components/tme/scc.c
@@ -6,6 +6,7 @@
 #include "network/localtalk.h"
 #include <string.h>
 #include <stdlib.h>
+#include <assert.h>
 /*
 Emulation of the Zilog 8530 SCC.
 
@@ -51,7 +52,8 @@ typedef struct {
 } SccChan;
 
 typedef struct {
-	int regptr;
+	int guard;
+	unsigned int regptr;
 	int intpending;
 	int intpendingOld;
 	SccChan chan[2];
@@ -385,7 +387,7 @@ static void triggerRx(int chan) {
 void sccWrite(unsigned int addr, unsigned int val) {
 	int chan, reg;
 	if (addr & (1<<1)) chan=SCC_CHANA; else chan=SCC_CHANB;
-	if (scc.regptr>32) abort();
+	assert(scc.regptr<32);
 	if (addr & (1<<2)) {
 		//Data
 		reg=8;
@@ -500,9 +502,7 @@ void sccWrite(unsigned int addr, unsigned int val) {
 unsigned int sccRead(unsigned int addr) {
 	int chan, reg, val=0xff;
 	if (addr & (1<<1)) chan=SCC_CHANA; else chan=SCC_CHANB;
-	if (scc.regptr>32) {
-		printf("WtF, regptr=%x?\n", scc.regptr);
-	}
+	assert(scc.regptr<32);
 	if (addr & (1<<2)) {
 		//Data
 		reg=8;
@@ -645,5 +645,6 @@ void sccInit() {
 		scc.chan[0].rx[x].delay=-1;
 		scc.chan[1].rx[x].delay=-1;
 	}
+	scc.guard=0x1234;
 }
 
diff --git a/sdkconfig b/sdkconfig
index dd81dfc..3b5f53f 100644
--- a/sdkconfig
+++ b/sdkconfig
@@ -94,6 +94,11 @@ CONFIG_OPTIMIZATION_ASSERTIONS_ENABLED=y
 CONFIG_OPTIMIZATION_ASSERTIONS_SILENT=
 CONFIG_OPTIMIZATION_ASSERTIONS_DISABLED=
 CONFIG_CXX_EXCEPTIONS=
+CONFIG_STACK_CHECK_NONE=y
+CONFIG_STACK_CHECK_NORM=
+CONFIG_STACK_CHECK_STRONG=
+CONFIG_STACK_CHECK_ALL=
+CONFIG_STACK_CHECK=
 
 #
 # Component config
@@ -189,8 +194,8 @@ CONFIG_BROWNOUT_DET_LVL_SEL_5=
 CONFIG_BROWNOUT_DET_LVL_SEL_6=
 CONFIG_BROWNOUT_DET_LVL_SEL_7=
 CONFIG_BROWNOUT_DET_LVL=0
-CONFIG_ESP32_TIME_SYSCALL_USE_RTC=
 CONFIG_ESP32_TIME_SYSCALL_USE_RTC_FRC1=y
+CONFIG_ESP32_TIME_SYSCALL_USE_RTC=
 CONFIG_ESP32_TIME_SYSCALL_USE_FRC1=
 CONFIG_ESP32_TIME_SYSCALL_USE_NONE=
 CONFIG_ESP32_RTC_CLOCK_SOURCE_INTERNAL_RC=y
@@ -203,6 +208,8 @@ CONFIG_ESP32_XTAL_FREQ_AUTO=y
 CONFIG_ESP32_XTAL_FREQ=0
 CONFIG_DISABLE_BASIC_ROM_CONSOLE=
 CONFIG_NO_BLOBS=y
+CONFIG_ESP_TIMER_PROFILING=
+CONFIG_COMPATIBLE_PRE_V2_1_BOOTLOADERS=
 
 #
 # Wi-Fi
@@ -213,8 +220,9 @@ CONFIG_ESP32_WIFI_STATIC_TX_BUFFER=
 CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER=y
 CONFIG_ESP32_WIFI_TX_BUFFER_TYPE=1
 CONFIG_ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM=32
-CONFIG_ESP32_WIFI_AMPDU_ENABLED=y
+CONFIG_ESP32_WIFI_AMPDU_TX_ENABLED=y
 CONFIG_ESP32_WIFI_TX_BA_WIN=6
+CONFIG_ESP32_WIFI_AMPDU_RX_ENABLED=y
 CONFIG_ESP32_WIFI_RX_BA_WIN=6
 CONFIG_ESP32_WIFI_NVS_ENABLED=y
 
@@ -242,8 +250,8 @@ CONFIG_EMAC_TASK_PRIORITY=20
 #
 # FAT Filesystem support
 #
-CONFIG_FATFS_CODEPAGE_ASCII=y
-CONFIG_FATFS_CODEPAGE_437=
+CONFIG_FATFS_CODEPAGE_DYNAMIC=
+CONFIG_FATFS_CODEPAGE_437=y
 CONFIG_FATFS_CODEPAGE_720=
 CONFIG_FATFS_CODEPAGE_737=
 CONFIG_FATFS_CODEPAGE_771=
@@ -264,8 +272,13 @@ CONFIG_FATFS_CODEPAGE_932=
 CONFIG_FATFS_CODEPAGE_936=
 CONFIG_FATFS_CODEPAGE_949=
 CONFIG_FATFS_CODEPAGE_950=
-CONFIG_FATFS_CODEPAGE=1
-CONFIG_FATFS_MAX_LFN=255
+CONFIG_FATFS_CODEPAGE=437
+CONFIG_FATFS_LFN_NONE=y
+CONFIG_FATFS_LFN_HEAP=
+CONFIG_FATFS_LFN_STACK=
+CONFIG_FATFS_FS_LOCK=0
+CONFIG_FATFS_TIMEOUT_MS=10000
+CONFIG_FATFS_PER_FILE_CACHE=y
 
 #
 # FreeRTOS
@@ -292,7 +305,9 @@ CONFIG_SUPPORT_STATIC_ALLOCATION=
 CONFIG_TIMER_TASK_PRIORITY=1
 CONFIG_TIMER_TASK_STACK_DEPTH=2048
 CONFIG_TIMER_QUEUE_LENGTH=10
+CONFIG_FREERTOS_QUEUE_REGISTRY_SIZE=0
 CONFIG_FREERTOS_USE_TRACE_FACILITY=
+CONFIG_FREERTOS_GENERATE_RUN_TIME_STATS=
 CONFIG_FREERTOS_DEBUG_INTERNALS=
 
 #
@@ -334,6 +349,12 @@ CONFIG_LWIP_STATS=
 CONFIG_LWIP_ETHARP_TRUST_IP_MAC=y
 CONFIG_TCPIP_RECVMBOX_SIZE=32
 CONFIG_LWIP_DHCP_DOES_ARP_CHECK=
+
+#
+# DHCP server
+#
+CONFIG_LWIP_DHCPS_LEASE_UNIT=60
+CONFIG_LWIP_DHCPS_MAX_STATION_NUM=8
 CONFIG_LWIP_AUTOIP=
 CONFIG_LWIP_NETIF_LOOPBACK=y
 CONFIG_LWIP_LOOPBACK_MAX_PBUFS=8
@@ -341,6 +362,8 @@ CONFIG_LWIP_LOOPBACK_MAX_PBUFS=8
 #
 # TCP
 #
+CONFIG_LWIP_MAX_ACTIVE_TCP=16
+CONFIG_LWIP_MAX_LISTENING_TCP=16
 CONFIG_TCP_MAXRTX=12
 CONFIG_TCP_SYNMAXRTX=6
 CONFIG_TCP_MSS=1436
@@ -356,6 +379,7 @@ CONFIG_TCP_OVERSIZE_DISABLE=
 #
 # UDP
 #
+CONFIG_LWIP_MAX_UDP_PCBS=16
 CONFIG_UDP_RECVMBOX_SIZE=6
 CONFIG_TCPIP_TASK_STACK_SIZE=2560
 CONFIG_PPP_SUPPORT=
@@ -366,6 +390,11 @@ CONFIG_PPP_SUPPORT=
 CONFIG_LWIP_MULTICAST_PING=
 CONFIG_LWIP_BROADCAST_PING=
 
+#
+# LWIP RAW API
+#
+CONFIG_LWIP_MAX_RAW_PCBS=16
+
 #
 # mbedTLS
 #
@@ -459,6 +488,7 @@ CONFIG_ESP32_PTHREAD_TASK_STACK_SIZE_DEFAULT=2048
 #
 # SPI Flash driver
 #
+CONFIG_SPI_FLASH_VERIFY_WRITE=
 CONFIG_SPI_FLASH_ENABLE_COUNTERS=
 CONFIG_SPI_FLASH_ROM_DRIVER_PATCH=y
 CONFIG_SPI_FLASH_WRITING_DANGEROUS_REGIONS_ABORTS=y
@@ -482,6 +512,8 @@ CONFIG_SPIFFS_GC_STATS=
 CONFIG_SPIFFS_OBJ_NAME_LEN=32
 CONFIG_SPIFFS_USE_MAGIC=y
 CONFIG_SPIFFS_USE_MAGIC_LENGTH=y
+CONFIG_SPIFFS_META_LENGTH=4
+CONFIG_SPIFFS_USE_MTIME=y
 
 #
 # Debug Configuration