diff --git a/config.c b/config.c
index 8010d55..0f3b8b4 100644
--- a/config.c
+++ b/config.c
@@ -10,10 +10,15 @@ struct eeprom_data_struct g_eeprom_data;
  * values.  */
 void eeprom_app_write_defaults(void)
 {
+	int i;
 	const char default_serial[SERIAL_NUM_LEN] = { '0','0','0','0','0','1' };
 
 	memcpy(g_eeprom_data.cfg.serial, default_serial, SERIAL_NUM_LEN);
 	g_eeprom_data.cfg.mode = CFG_MODE_STANDARD;
+
+	for (i=0; i<NUM_CHANNELS; i++) {
+		g_eeprom_data.cfg.poll_interval[i] = 5; // 5ms default
+	}
 }
 
 static void config_set_serial(char serial[SERIAL_NUM_LEN])
@@ -32,6 +37,24 @@ unsigned char config_getParam(unsigned char param, unsigned char *value, unsigne
 		case CFG_PARAM_SERIAL:
 			memcpy(value, g_eeprom_data.cfg.serial, SERIAL_NUM_LEN);
 			return SERIAL_NUM_LEN;
+		case CFG_PARAM_POLL_INTERVAL0:
+			*value = g_eeprom_data.cfg.poll_interval[0];
+			return 1;
+#if NUM_CHANNELS > 1
+		case CFG_PARAM_POLL_INTERVAL1:
+			*value = g_eeprom_data.cfg.poll_interval[1];
+			return 1;
+#endif
+#if NUM_CHANNELS > 2
+		case CFG_PARAM_POLL_INTERVAL2:
+			*value = g_eeprom_data.cfg.poll_interval[2];
+			return 1;
+#endif
+#if NUM_CHANNELS > 3
+		case CFG_PARAM_POLL_INTERVAL3:
+			*value = g_eeprom_data.cfg.poll_interval[3];
+			return 1;
+#endif
 	}
 
 	return 0;
@@ -50,6 +73,24 @@ unsigned char config_setParam(unsigned char param, const unsigned char *value)
 		case CFG_PARAM_SERIAL:
 			config_set_serial((char*)value);
 			return 1;
+		case CFG_PARAM_POLL_INTERVAL0:
+			g_eeprom_data.cfg.poll_interval[0] = value[0];
+			return 1;
+#if NUM_CHANNELS > 1
+		case CFG_PARAM_POLL_INTERVAL1:
+			g_eeprom_data.cfg.poll_interval[1] = value[0];
+			return 1;
+#endif
+#if NUM_CHANNELS > 2
+		case CFG_PARAM_POLL_INTERVAL2:
+			g_eeprom_data.cfg.poll_interval[2] = value[0];
+			return 1;
+#endif
+#if NUM_CHANNELS > 3
+		case CFG_PARAM_POLL_INTERVAL3:
+			g_eeprom_data.cfg.poll_interval[3] = value[0];
+			return 1;
+#endif
 	}
 
 	return 0;
diff --git a/config.h b/config.h
index 8ac7efa..03ede3d 100644
--- a/config.h
+++ b/config.h
@@ -1,10 +1,12 @@
 #ifndef _config_h__
 #define _config_h__
 
+#define NUM_CHANNELS	4
 #define SERIAL_NUM_LEN	6
 struct eeprom_cfg {
 	uint8_t serial[SERIAL_NUM_LEN];
 	uint8_t mode;
+	uint8_t poll_interval[NUM_CHANNELS];
 };
 
 void eeprom_app_write_defaults(void);
diff --git a/hiddata.c b/hiddata.c
index 891c872..d115dc5 100644
--- a/hiddata.c
+++ b/hiddata.c
@@ -38,9 +38,8 @@ uint16_t hiddata_get_report(struct usb_request *rq, const uint8_t **dat)
 /*** Get/Set report called from interrupt context! */
 uint8_t hiddata_set_report(const struct usb_request *rq, const uint8_t *dat, uint16_t len)
 {
-	int i;
-
 #ifdef DEBUG
+	int i;
 	printf("Set data %d\n", len);
 	for (i=0; i<len; i++) {
 		printf("0x%02x ", dat[i]);
@@ -57,8 +56,8 @@ uint8_t hiddata_set_report(const struct usb_request *rq, const uint8_t *dat, uin
 
 static void hiddata_processCommandBuffer(void)
 {
-	int i;
 	int bits;
+	unsigned char channel;
 
 	if (cmdbuf_len < 1) {
 		state = STATE_IDLE;
@@ -73,11 +72,13 @@ static void hiddata_processCommandBuffer(void)
 			break;
 		case RQ_GCN64_RAW_SI_COMMAND:
 			// TODO : Range checking
-			// cmd : RQ, LEN, data[]
-			bits = gcn64_transaction(cmdbuf+2, cmdbuf[1]);
+			// cmdbuf[] : RQ, CHN, LEN, data[]
+			channel = cmdbuf[1];
+			bits = gcn64_transaction(cmdbuf+3, cmdbuf[2]);
 			cmdbuf_len = bits / 8; // The above return a number of bits
-			gcn64_protocol_getBytes(0, cmdbuf_len, cmdbuf + 2);
-			cmdbuf_len += 2; // Answer: RQ, LEN, data[]
+			gcn64_protocol_getBytes(0, cmdbuf_len, cmdbuf + 3);
+			cmdbuf[2] = cmdbuf_len;
+			cmdbuf_len += 3; // Answer: RQ, CHN, LEN, data[]
 			break;
 		case RQ_GCN64_GET_CONFIG_PARAM:
 			// Cmd : RQ, PARAM
@@ -92,7 +93,8 @@ static void hiddata_processCommandBuffer(void)
 			cmdbuf_len = 2;
 			break;
 		case RQ_GCN64_SUSPEND_POLLING:
-			g_polling_suspended = 1;
+			// CMD: RQ, PARAM
+			g_polling_suspended = cmdbuf[1];
 			break;
 	}
 
diff --git a/main.c b/main.c
index ba56171..6340dd9 100644
--- a/main.c
+++ b/main.c
@@ -480,6 +480,14 @@ void eeprom_app_ready(void)
 
 char g_polling_suspended = 0;
 
+void pollDelay(void)
+{
+	int i;
+	for (i=0; i<g_eeprom_data.cfg.poll_interval[0]; i++) {
+		_delay_ms(1);
+	}
+}
+
 int main(void)
 {
 	Gamepad *pad = NULL;
@@ -512,7 +520,10 @@ int main(void)
 		// for polling the controller...
 		hiddata_doTask();
 
-		_delay_ms(5);
+		if (!g_polling_suspended) {
+			pollDelay();
+		}
+
 		decideVibration();
 
 		if (last_v != gamepad_vibrate) {
diff --git a/requests.h b/requests.h
index beed507..a5c51d5 100644
--- a/requests.h
+++ b/requests.h
@@ -14,5 +14,10 @@
 
 #define CFG_PARAM_SERIAL		0x01
 
+#define CFG_PARAM_POLL_INTERVAL0	0x10
+#define CFG_PARAM_POLL_INTERVAL1	0x11
+#define CFG_PARAM_POLL_INTERVAL2	0x12
+#define CFG_PARAM_POLL_INTERVAL3	0x13
+
 
 #endif
diff --git a/tool/Makefile b/tool/Makefile
index 19534f4..d230887 100644
--- a/tool/Makefile
+++ b/tool/Makefile
@@ -8,7 +8,7 @@ PREFIX=/usr/local
 
 PROG=gcn64ctl
 
-OBJS=main.o gcn64.o mempak.o
+OBJS=main.o gcn64.o mempak.o gcn64lib.o
 
 .PHONY : clean install
 
diff --git a/tool/gcn64.h b/tool/gcn64.h
index caddd72..8bbb68c 100644
--- a/tool/gcn64.h
+++ b/tool/gcn64.h
@@ -35,6 +35,5 @@ int gcn64_poll_result(gcn64_hdl_t hdl, unsigned char *cmd, int cmdlen);
 
 int gcn64_exchange(gcn64_hdl_t hdl, unsigned char *outcmd, int outlen, unsigned char *result, int result_max);
 
-
 #endif // _gcn64_h__
 
diff --git a/tool/gcn64ctl b/tool/gcn64ctl
new file mode 100755
index 0000000..a0507a3
Binary files /dev/null and b/tool/gcn64ctl differ
diff --git a/tool/gcn64lib.c b/tool/gcn64lib.c
new file mode 100644
index 0000000..f74c0fb
--- /dev/null
+++ b/tool/gcn64lib.c
@@ -0,0 +1,77 @@
+#include <string.h>
+#include "gcn64lib.h"
+#include "../requests.h"
+
+int gcn64lib_getConfig(gcn64_hdl_t hdl, unsigned char param, unsigned char *rx, unsigned char rx_max)
+{
+	unsigned char cmd[2];
+	int n;
+
+	cmd[0] = RQ_GCN64_GET_CONFIG_PARAM;
+	cmd[1] = param;
+
+	n = gcn64_exchange(hdl, cmd, 2, rx, rx_max);
+	if (n<2)
+		return n;
+
+	n -= 2;
+
+	// Drop the leading CMD and PARAM
+	if (n) {
+		memmove(rx, rx+2, n);
+	}
+
+	return n;
+}
+int gcn64lib_setConfig(gcn64_hdl_t hdl, unsigned char param, unsigned char *data, unsigned char len)
+{
+	unsigned char cmd[2 + len];
+	int n;
+
+	cmd[0] = RQ_GCN64_SET_CONFIG_PARAM;
+	cmd[1] = param;
+	memcpy(cmd + 2, data, len);
+
+	n = gcn64_exchange(hdl, cmd, 2 + len, cmd, sizeof(cmd));
+	if (n<0)
+		return n;
+
+	return 0;
+}
+
+int gcn64lib_suspendPolling(gcn64_hdl_t hdl, unsigned char suspend)
+{
+	unsigned char cmd[2];
+	int n;
+
+	cmd[0] = RQ_GCN64_SUSPEND_POLLING;
+	cmd[1] = suspend;
+
+	n = gcn64_exchange(hdl, cmd, 2, cmd, sizeof(cmd));
+	if (n<0)
+		return n;
+
+	return 0;
+}
+
+int gcn64lib_rawSiCommand(gcn64_hdl_t hdl, unsigned char channel, unsigned char *tx, unsigned char tx_len, unsigned char *rx, unsigned char max_rx)
+{
+	unsigned char cmd[3 + tx_len];
+	int cmdlen, rx_len, n;
+
+	cmd[0] = RQ_GCN64_RAW_SI_COMMAND;
+	cmd[1] = channel;
+	cmd[2] = tx_len;
+	memcpy(cmd+3, tx, tx_len);
+	cmdlen = 3 + tx_len;
+
+	n = gcn64_exchange(hdl, cmd, cmdlen, rx, max_rx);
+	if (n<0)
+		return n;
+
+	rx_len = rx[2];
+
+	memmove(rx, rx + 3, rx_len);
+
+	return rx_len;
+}
diff --git a/tool/gcn64lib.h b/tool/gcn64lib.h
new file mode 100644
index 0000000..54d89a8
--- /dev/null
+++ b/tool/gcn64lib.h
@@ -0,0 +1,11 @@
+#ifndef _gcn64_lib_h__
+#define _gcn64_lib_h__
+
+#include "gcn64.h"
+
+int gcn64lib_suspendPolling(gcn64_hdl_t hdl, unsigned char suspend);
+int gcn64lib_setConfig(gcn64_hdl_t hdl, unsigned char param, unsigned char *data, unsigned char len);
+int gcn64lib_getConfig(gcn64_hdl_t hdl, unsigned char param, unsigned char *rx, unsigned char rx_max);
+int gcn64lib_rawSiCommand(gcn64_hdl_t hdl, unsigned char channel, unsigned char *tx, unsigned char tx_len, unsigned char *rx, unsigned char max_rx);
+
+#endif // _gcn64_lib_h__
diff --git a/tool/gcn64utils.h b/tool/gcn64utils.h
new file mode 100644
index 0000000..ab714fb
--- /dev/null
+++ b/tool/gcn64utils.h
@@ -0,0 +1,5 @@
+#ifndef _gcn64_utils_h__
+#define _gcn64_utils_h__
+
+#endif // _gcn64_utils_h__
+
diff --git a/tool/main.c b/tool/main.c
index ae9cb8a..5475b9b 100644
--- a/tool/main.c
+++ b/tool/main.c
@@ -26,6 +26,7 @@
 
 #include "version.h"
 #include "gcn64.h"
+#include "gcn64lib.h"
 #include "mempak.h"
 #include "../requests.h"
 #include "../gcn64_protocol.h"
@@ -36,19 +37,22 @@ static void printUsage(void)
 	printf("Control tool for WUSBmote adapter. Version %s\n", VERSION_STR);
 	printf("\n");
 	printf("Options:\n");
-	printf("  -h, --help          Print help\n");
-	printf("  -l, --list          List devices\n");
-	printf("  -s serial           Operate on specified device (required unless -f is specified)\n");
-	printf("  -f, --force         If no serial is specified, use first device detected.\n");
-	printf("  -o, --outfile       Output file for read operations (eg: --n64-mempak-dump)\n");
+	printf("  -h, --help            Print help\n");
+	printf("  -l, --list            List devices\n");
+	printf("  -s serial             Operate on specified device (required unless -f is specified)\n");
+	printf("  -f, --force           If no serial is specified, use first device detected.\n");
+	printf("  -o, --outfile file    Output file for read operations (eg: --n64-mempak-dump)\n");
 	printf("\n");
 	printf("Configuration commands:\n");
 	printf("  --set_serial serial                Assign a new device serial number\n");
 	printf("  --get_serial                       Read serial from eeprom\n");
+	printf("  --set_poll_rate ms                 Set time between controller polls in milliseconds\n");
+	printf("  --get_poll_rate                    Read configured poll rate\n");
 	printf("\n");
 	printf("Advanced commands:\n");
 	printf("  --bootloader                       Re-enumerate in bootloader mode\n");
-	printf("  --suspend_polling                  Stop polling controller\n");
+	printf("  --suspend_polling                  Stop polling the controller\n");
+	printf("  --resume_polling                   Re-start polling the controller\n");
 	printf("\n");
 	printf("Raw controller commands:\n");
 	printf("  --n64_getstatus                    Read N64 controller status now\n");
@@ -58,6 +62,17 @@ static void printUsage(void)
 	printf("  --n64_mempak_dump                  Dump N64 mempak contents (Use with --outfile to write to file)\n");
 }
 
+static void printHexBuf(unsigned char *buf, int n)
+{
+	int i;
+
+	for (i=0; i<n; i++) {
+		printf("%02x ", buf[i]);
+	}
+	printf("\n");
+}
+
+
 #define OPT_OUTFILE					'o'
 #define OPT_SET_SERIAL				257
 #define OPT_GET_SERIAL				258
@@ -68,6 +83,9 @@ static void printUsage(void)
 #define OPT_N64_MEMPAK_DUMP			304
 #define OPT_N64_GETCAPS				305
 #define OPT_SUSPEND_POLLING			306
+#define OPT_RESUME_POLLING			307
+#define OPT_SET_POLL_INTERVAL			308
+#define OPT_GET_POLL_INTERVAL			309
 
 struct option longopts[] = {
 	{ "help", 0, NULL, 'h' },
@@ -82,7 +100,10 @@ struct option longopts[] = {
 	{ "n64_getcaps", 0, NULL, OPT_N64_GETCAPS },
 	{ "n64_mempak_dump", 0, NULL, OPT_N64_MEMPAK_DUMP },
 	{ "suspend_polling", 0, NULL, OPT_SUSPEND_POLLING },
+	{ "resume_polling", 0, NULL, OPT_RESUME_POLLING },
 	{ "outfile", 1, NULL, OPT_OUTFILE },
+	{ "set_poll_rate", 1, NULL, OPT_SET_POLL_INTERVAL },
+	{ "get_poll_rate", 0, NULL, OPT_GET_POLL_INTERVAL },
 	{ },
 };
 
@@ -209,68 +230,83 @@ int main(int argc, char **argv)
 		unsigned char cmd[64] = { };
 		int n;
 		int cmdlen = 0;
+		int do_exchange = 0;
 
 		switch (opt)
 		{
+			case OPT_SET_POLL_INTERVAL:
+				cmd[0] = atoi(optarg);
+				printf("Setting poll interval to %d ms\n", cmd[0]);
+				gcn64lib_setConfig(hdl, CFG_PARAM_POLL_INTERVAL0, cmd, 1);
+				break;
+
+			case OPT_GET_POLL_INTERVAL:
+				n = gcn64lib_getConfig(hdl, CFG_PARAM_POLL_INTERVAL0, cmd, sizeof(cmd));
+				if (n == 1) {
+					printf("Poll interval: %d ms\n", cmd[0]);
+				}
+				break;
+
 			case OPT_SET_SERIAL:
 				printf("Setting serial...");
 				if (strlen(optarg) != 6) {
 					fprintf(stderr, "Serial number must be 6 characters\n");
 					return -1;
 				}
-				cmd[0] = RQ_GCN64_SET_CONFIG_PARAM;
-				cmd[1] = CFG_PARAM_SERIAL;
-				memcpy(cmd + 2, optarg, 6);
-				cmdlen = 8;
+				gcn64lib_setConfig(hdl, CFG_PARAM_SERIAL, (void*)optarg, 6);
 				break;
 
 			case OPT_GET_SERIAL:
-				cmd[0] = RQ_GCN64_GET_CONFIG_PARAM;
-				cmd[1] = CFG_PARAM_SERIAL;
-				cmdlen = 2;
+				n = gcn64lib_getConfig(hdl, CFG_PARAM_SERIAL, cmd, sizeof(cmd));
+				if (n==6) {
+					cmd[6] = 0;
+					printf("Serial: %s\n", cmd);
+				}
 				break;
 
 			case OPT_BOOTLOADER:
 				printf("Sending 'jump to bootloader' command...");
 				cmd[0] = RQ_GCN64_JUMP_TO_BOOTLOADER;
 				cmdlen = 1;
+				do_exchange = 1;
 				break;
 
 			case OPT_SUSPEND_POLLING:
-				cmd[0] = RQ_GCN64_SUSPEND_POLLING;
-				cmdlen = 1;
+				gcn64lib_suspendPolling(hdl, 1);
+				break;
+
+			case OPT_RESUME_POLLING:
+				gcn64lib_suspendPolling(hdl, 0);
 				break;
 
 			case OPT_N64_GETSTATUS:
-				cmd[0] = RQ_GCN64_RAW_SI_COMMAND;
-				cmd[1] = 0x01; // Length of SI command
-				cmd[2] = N64_GET_STATUS; // N64 GET status
-				cmdlen = 3;
-				break;
-
-			case OPT_GC_GETSTATUS:
-				cmd[0] = RQ_GCN64_RAW_SI_COMMAND;
-				cmd[1] = 0x03; // Length of SI command
-				cmd[2] = GC_GETSTATUS1;
-				cmd[3] = GC_GETSTATUS2;
-				cmd[4] = GC_GETSTATUS3(0);
-				cmdlen = 5;
+				cmd[0] = N64_GET_STATUS;
+				n = gcn64lib_rawSiCommand(hdl, 0, cmd, 1, cmd, sizeof(cmd));
+				if (n >= 0) {
+					printf("N64 Get status[%d]: ", n);
+					printHexBuf(cmd, n);
+				}
 				break;
 
 			case OPT_GC_GETSTATUS_RUMBLE:
-				cmd[0] = RQ_GCN64_RAW_SI_COMMAND;
-				cmd[1] = 0x03; // Length of SI command
-				cmd[2] = GC_GETSTATUS1;
-				cmd[3] = GC_GETSTATUS2;
-				cmd[4] = GC_GETSTATUS3(0);
-				cmdlen = 5;
+			case OPT_GC_GETSTATUS:
+				cmd[0] = GC_GETSTATUS1;
+				cmd[1] = GC_GETSTATUS2;
+				cmd[2] = GC_GETSTATUS3(opt == OPT_GC_GETSTATUS_RUMBLE);
+				n = gcn64lib_rawSiCommand(hdl, 0, cmd, 3, cmd, sizeof(cmd));
+				if (n >= 0) {
+					printf("GC Get status[%d]: ", n);
+					printHexBuf(cmd, n);
+				}
 				break;
 
 			case OPT_N64_GETCAPS:
-				cmd[0] = RQ_GCN64_RAW_SI_COMMAND;
-				cmd[1] = 0x01; // Length of SI command
-				cmd[2] = N64_GET_CAPABILITIES; // N64 GET status
-				cmdlen = 3;
+				cmd[0] = N64_GET_CAPABILITIES;
+				n = gcn64lib_rawSiCommand(hdl, 0, cmd, 1, cmd, sizeof(cmd));
+				if (n >= 0) {
+					printf("N64 Get caps[%d]: ", n);
+					printHexBuf(cmd, n);
+				}
 				break;
 
 			case OPT_N64_MEMPAK_DUMP:
@@ -282,7 +318,7 @@ int main(int argc, char **argv)
 				break;
 		}
 
-		if (cmd[0]) {
+		if (do_exchange) {
 			int i;
 			n = gcn64_exchange(hdl, cmd, cmdlen, cmd, sizeof(cmd));
 			if (n<0)
diff --git a/tool/mempak.c b/tool/mempak.c
index 66d087f..554bb76 100644
--- a/tool/mempak.c
+++ b/tool/mempak.c
@@ -3,6 +3,7 @@
 #include <ctype.h>
 #include <stdint.h>
 #include "gcn64.h"
+#include "gcn64lib.h"
 #include "mempak.h"
 #include "../gcn64_protocol.h"
 #include "../requests.h"
@@ -122,30 +123,42 @@ int mempak_writeBlock(gcn64_hdl_t hdl, unsigned short addr, unsigned char data[3
 int mempak_readBlock(gcn64_hdl_t hdl, unsigned short addr, unsigned char dst[32])
 {
 	unsigned char cmd[64];
-	int cmdlen;
+	//int cmdlen;
 	int n;
 	uint16_t addr_crc;
 	unsigned char crc;
 
 	addr_crc = __calc_address_crc(addr);
 
+	cmd[0] = N64_EXPANSION_READ;
+	cmd[1] = addr_crc>>8; // Address high byte
+	cmd[2] = addr_crc&0xff; // Address low byte
+
+/*
 	cmd[0] = RQ_GCN64_RAW_SI_COMMAND;
 	cmd[1] = 3;
 	cmd[2] = N64_EXPANSION_READ;
 	cmd[3] = addr_crc>>8; // Address high byte
 	cmd[4] = addr_crc&0xff; // Address low byte
 	cmdlen = 5;
-
+*/
 	//printf("Addr 0x%04x with crc -> 0x%04x\n", addr, addr_crc);
 
-	n = gcn64_exchange(hdl, cmd, cmdlen, cmd, sizeof(cmd));
-	if (n != 35)
+	n = gcn64lib_rawSiCommand(hdl, 0, cmd, 3, cmd, sizeof(cmd));
+	if (n != 33) {
+		printf("Hey! %d\n", n);
 		return -1;
+	}
 
-	memcpy(dst, cmd + 2, 0x20);
+//	n = gcn64_exchange(hdl, cmd, cmdlen, cmd, sizeof(cmd));
+//	if (n != 35)
+//		return -1;
+
+	//memcpy(dst, cmd + 2, 0x20);
+	memcpy(dst, cmd, 0x20);
 
 	crc = __calc_data_crc(dst);
-	if (crc != cmd[34]) {
+	if (crc != cmd[32]) {
 		fprintf(stderr, "Bad CRC reading address 0x%04x\n", addr);
 		return -1;
 	}
@@ -184,7 +197,7 @@ int mempak_readAll(gcn64_hdl_t hdl, unsigned char dstbuf[0x8000])
 	return 0;
 }
 
-void mempak_dump(gcn64_hdl_t hdl)
+int mempak_dump(gcn64_hdl_t hdl)
 {
 	unsigned char cardbuf[0x8000];
 	int i,j;
@@ -193,7 +206,10 @@ void mempak_dump(gcn64_hdl_t hdl)
 	mempak_init(hdl);
 
 	printf("Reading card...\n");
-	mempak_readAll(hdl, cardbuf);
+	i = mempak_readAll(hdl, cardbuf);
+	if (i<0) {
+		return i;
+	}
 
 	for (i=0; i<DUMP_SIZE; i+=0x20) {
 		printf("%04x: ", i);
@@ -207,6 +223,8 @@ void mempak_dump(gcn64_hdl_t hdl)
 		}
 		printf("\n");
 	}
+
+	return 0;
 }
 
 #define NUM_COPIES 4
diff --git a/tool/mempak.h b/tool/mempak.h
index 91ccddd..93cd5ff 100644
--- a/tool/mempak.h
+++ b/tool/mempak.h
@@ -1,5 +1,5 @@
 
-void mempak_dump(gcn64_hdl_t hdl);
+int mempak_dump(gcn64_hdl_t hdl);
 int mempak_readBlock(gcn64_hdl_t hdl, unsigned short addr, unsigned char dst[32]);
 int mempak_dumpToFile(gcn64_hdl_t hdl, const char *out_filename);