diff --git a/jtag/src/cmd/bit.c b/jtag/src/cmd/bit.c
index 2911d590..6cff8ffc 100644
--- a/jtag/src/cmd/bit.c
+++ b/jtag/src/cmd/bit.c
@@ -82,19 +82,24 @@ cmd_bit_run( char *params[] )
 	if (strlen( params[2] ) != 1)
 		return -1;
 	switch (params[2][0]) {
-		case 'I':
+	    case 'I':
+	    case 'i':
 			type = BSBIT_INPUT;
 			break;
 		case 'O':
+	    case 'o':
 			type = BSBIT_OUTPUT;
 			break;
 		case 'B':
+	    case 'b':
 			type = BSBIT_BIDIR;
 			break;
 		case 'C':
+	    case 'c':
 			type = BSBIT_CONTROL;
 			break;
 		case 'X':
+	    case 'x':
 			type = BSBIT_INTERNAL;
 			break;
 		default:
@@ -134,7 +139,7 @@ cmd_bit_run( char *params[] )
 	part->bsbits[bit]->control_value = (params[6][0] == '1') ? 1 : 0;
 
 	/* control state */
-	if ((strlen( params[7] ) != 1) || (params[7][0] != 'Z'))
+	if (strcasecmp(params[7], "Z"))
 		return -1;
 	part->bsbits[bit]->control_state = BSBIT_STATE_Z;
 
diff --git a/jtag/src/cmd/cable.c b/jtag/src/cmd/cable.c
index 9b62a539..f481ac48 100644
--- a/jtag/src/cmd/cable.c
+++ b/jtag/src/cmd/cable.c
@@ -47,7 +47,7 @@ cmd_cable_run( char *params[] )
 
 	/* search connection type driver */
 	for (i = 0; parport_drivers[i]; i++)
-		if (strcmp( params[1], parport_drivers[i]->type ) == 0)
+		if (strcasecmp( params[1], parport_drivers[i]->type ) == 0)
 			break;
 	if (!parport_drivers[i]) {
 		printf( _("Unknown connection type: %s\n"), params[1] );
diff --git a/jtag/src/cmd/dr.c b/jtag/src/cmd/dr.c
index 655d86a5..077d1736 100644
--- a/jtag/src/cmd/dr.c
+++ b/jtag/src/cmd/dr.c
@@ -55,9 +55,9 @@ cmd_dr_run( char *params[] )
 	}
 
 	if (params[1]) {
-		if (strcmp( params[1], "in" ) == 0)
+		if (strcasecmp( params[1], "in" ) == 0)
 			dir = 0;
-		else if (strcmp( params[1], "out" ) == 0)
+		else if (strcasecmp( params[1], "out" ) == 0)
 			dir = 1;
 		else
 			return -1;
diff --git a/jtag/src/cmd/endian.c b/jtag/src/cmd/endian.c
index 45e2cfb9..7d739ffc 100644
--- a/jtag/src/cmd/endian.c
+++ b/jtag/src/cmd/endian.c
@@ -46,11 +46,11 @@ cmd_endian_run( char *params[] )
 	}
 
 
-	if (strcmp( params[1], "little" ) == 0) {
+	if (strcasecmp( params[1], "little" ) == 0) {
 		big_endian = 0;
 		return 1;
 	}
-	if (strcmp( params[1], "big" ) == 0) {
+	if (strcasecmp( params[1], "big" ) == 0) {
 		big_endian = 1;
 		return 1;
 	}
diff --git a/jtag/src/cmd/flashmem.c b/jtag/src/cmd/flashmem.c
index d47b6188..d76957ea 100644
--- a/jtag/src/cmd/flashmem.c
+++ b/jtag/src/cmd/flashmem.c
@@ -48,11 +48,11 @@ cmd_flashmem_run( char *params[] )
 		return 1;
 	}
 
-	msbin = strcmp( "msbin", params[1] ) == 0;
+	msbin = strcasecmp( "msbin", params[1] ) == 0;
 	if (!msbin && cmd_get_number( params[1], &adr ))
 			return -1;
 
-	f = fopen( params[2], "r" );
+	f = fopen( params[2], "rb" );
 	if (!f) {
 		printf( _("Unable to open file `%s'!\n"), params[2] );
 		return 1;
diff --git a/jtag/src/cmd/get.c b/jtag/src/cmd/get.c
index 4c61d0c7..bc71b7fc 100644
--- a/jtag/src/cmd/get.c
+++ b/jtag/src/cmd/get.c
@@ -42,7 +42,7 @@ cmd_get_run( char *params[] )
 	if (cmd_params( params ) != 3)
 		return -1;
 
-	if (strcmp( params[1], "signal") != 0)
+	if (strcasecmp( params[1], "signal") != 0)
 		return -1;
 
 	if (!cmd_test_cable())
diff --git a/jtag/src/cmd/print.c b/jtag/src/cmd/print.c
index ecafc049..4e0d38fe 100644
--- a/jtag/src/cmd/print.c
+++ b/jtag/src/cmd/print.c
@@ -58,9 +58,9 @@ cmd_print_run( char *params[] )
 	}
 
 	if (cmd_params( params ) == 2) {
-		if ((strcmp( params[1], "chain" ) != 0) && (strcmp( params[1], "bus") != 0))
+		if ((strcasecmp( params[1], "chain" ) != 0) && (strcasecmp( params[1], "bus") != 0))
 			return -1;
-		if (strcmp( params[1], "bus") == 0)
+		if (strcasecmp( params[1], "bus") == 0)
 			noheader = 1;
 	}
 
@@ -118,7 +118,7 @@ cmd_print_run( char *params[] )
 		return 1;
 	}
 
-	if (strcmp( params[1], "chain" ) == 0) {
+	if (strcasecmp( params[1], "chain" ) == 0) {
 		parts_print( chain->parts );
 		return 1;
 	}
diff --git a/jtag/src/cmd/register.c b/jtag/src/cmd/register.c
index 6e1c3cb9..715ea570 100644
--- a/jtag/src/cmd/register.c
+++ b/jtag/src/cmd/register.c
@@ -76,7 +76,7 @@ cmd_register_run( char *params[] )
 	part->data_registers = dr;
 
 	/* Boundary Scan Register */
-	if (strcmp( dr->name, "BSR" ) == 0) {
+	if (strcasecmp( dr->name, "BSR" ) == 0) {
 		int i;
 
 		part->boundary_length = len;
@@ -90,7 +90,7 @@ cmd_register_run( char *params[] )
 	}
 
 	/* Device Identification Register */
-	if (strcmp( dr->name, "DIR" ) == 0)
+	if (strcasecmp( dr->name, "DIR" ) == 0)
 		register_init( dr->out, register_get_string( part->id ) );
 
 	return 1;
diff --git a/jtag/src/cmd/set.c b/jtag/src/cmd/set.c
index d3b05233..9049a750 100644
--- a/jtag/src/cmd/set.c
+++ b/jtag/src/cmd/set.c
@@ -43,7 +43,7 @@ cmd_set_run( char *params[] )
 	if (cmd_params( params ) < 4 || cmd_params( params ) > 5)
 		return -1;
 
-	if (strcmp( params[1], "signal" ) != 0)
+	if (strcasecmp( params[1], "signal" ) != 0)
 		return -1;
 
 	if (!cmd_test_cable())
@@ -60,10 +60,10 @@ cmd_set_run( char *params[] )
 	}
 
 	/* direction */
-	if (strcmp( params[3], "in" ) != 0 && strcmp( params[3], "out" ) != 0)
+	if (strcasecmp( params[3], "in" ) != 0 && strcasecmp( params[3], "out" ) != 0)
 		return -1;
 
-	dir = (strcmp( params[3], "in" ) == 0) ? 0 : 1;
+	dir = (strcasecmp( params[3], "in" ) == 0) ? 0 : 1;
 
 	if (dir) {
 		if (cmd_get_number( params[4], &data ))
diff --git a/jtag/src/cmd/shift.c b/jtag/src/cmd/shift.c
index e27435bd..3101c6e5 100644
--- a/jtag/src/cmd/shift.c
+++ b/jtag/src/cmd/shift.c
@@ -41,11 +41,11 @@ cmd_shift_run( char *params[] )
 	if (!cmd_test_cable())
 		return 1;
 
-	if (strcmp( params[1], "ir" ) == 0) {
+	if (strcasecmp( params[1], "ir" ) == 0) {
 		chain_shift_instructions( chain );
 		return 1;
 	}
-	if (strcmp( params[1], "dr" ) == 0) {
+	if (strcasecmp( params[1], "dr" ) == 0) {
 		chain_shift_data_registers( chain, 1 );
 		return 1;
 	}
diff --git a/jtag/src/part/part.c b/jtag/src/part/part.c
index 3b598d1e..38fcc664 100644
--- a/jtag/src/part/part.c
+++ b/jtag/src/part/part.c
@@ -111,7 +111,7 @@ part_find_instruction( part_t *p, const char *iname )
 
 	i = p->instructions;
 	while (i) {
-		if (strcmp( iname, i->name ) == 0)
+		if (strcasecmp( iname, i->name ) == 0)
 			break;
 		i = i->next;
 	}
@@ -129,7 +129,7 @@ part_find_data_register( part_t *p, const char *drname )
 
 	dr = p->data_registers;
 	while (dr) {
-		if (strcmp( drname, dr->name ) == 0)
+		if (strcasecmp( drname, dr->name ) == 0)
 			break;
 		dr = dr->next;
 	}
diff --git a/jtag/src/tap/parport/direct.c b/jtag/src/tap/parport/direct.c
index e353c8ed..c16eaf33 100644
--- a/jtag/src/tap/parport/direct.c
+++ b/jtag/src/tap/parport/direct.c
@@ -152,6 +152,7 @@ static cable_t *
 direct_connect( const char **par, int parnum )
 {
 	int i;
+	long int port_scan_val;
 	unsigned int port;
 	port_node_t *pn = ports;
 	parport_t *parport;
@@ -162,11 +163,16 @@ direct_connect( const char **par, int parnum )
 		return NULL;
 	}
 
-	if ((sscanf( par[0], "0x%x", &port ) != 1) && (sscanf( par[0], "%d", &port ) != 1)) {
+	port_scan_val = strtol(par[0], NULL, 0);
+	
+	// if ((sscanf( par[0], "0x%x", &port ) != 1) && (sscanf( par[0], "%d", &port ) != 1)) {
+	if (port_scan_val < 0 || (port_scan_val + 3) > 0xffff) {
 		printf( _("Invalid port address!\n") );
 		return NULL;
 	}
 
+	port = (unsigned int )port_scan_val;
+
 	while (pn)
 		for (pn = ports; pn; pn = pn->next) {
 			unsigned int aport;
@@ -179,13 +185,13 @@ direct_connect( const char **par, int parnum )
 			}
 		}
 
-	if (strcmp( par[1], "none" ) == 0) {
+	if (strcasecmp( par[1], "none" ) == 0) {
 		printf( _("Changed cable to 'none'\n") );
 		return NULL;
 	}
 
 	for (i = 0; cable_drivers[i]; i++)
-		if (strcmp( par[1], cable_drivers[i]->name ) == 0)
+		if (strcasecmp( par[1], cable_drivers[i]->name ) == 0)
 			break;
 
 	if (!cable_drivers[i]) {
diff --git a/jtag/src/tap/parport/ppdev.c b/jtag/src/tap/parport/ppdev.c
index e533ee9f..b6c3446b 100644
--- a/jtag/src/tap/parport/ppdev.c
+++ b/jtag/src/tap/parport/ppdev.c
@@ -126,7 +126,7 @@ ppdev_connect( const char **par, int parnum )
 			break;
 		}
 
-	if (strcmp( par[1], "none" ) == 0) {
+	if (strcasecmp( par[1], "none" ) == 0) {
 		printf( _("Changed cable to 'none'\n") );
 		return NULL;
 	}