diff --git a/c64.sv b/c64.sv
index 2fb5bbf..0e1799f 100644
--- a/c64.sv
+++ b/c64.sv
@@ -43,8 +43,8 @@ module emu
 	output        CE_PIXEL,
 
 	//Video aspect ratio for HDMI. Most retro systems have ratio 4:3.
-	output [11:0] VIDEO_ARX,
-	output [11:0] VIDEO_ARY,
+	output [11:0] VIDEO_ARX,
+	output [11:0] VIDEO_ARY,
 
 	output  [7:0] VGA_R,
 	output  [7:0] VGA_G,
@@ -68,8 +68,8 @@ module emu
 	// b[1]: user button
 	// b[0]: osd button
 	output  [1:0] BUTTONS,
-
-	input         CLK_AUDIO, // 24.576 MHz
+
+	input         CLK_AUDIO, // 24.576 MHz
 	output [15:0] AUDIO_L,
 	output [15:0] AUDIO_R,
 	output        AUDIO_S,   // 1 - signed audio samples, 0 - unsigned
@@ -157,8 +157,8 @@ localparam CONF_STR = {
 	"D0S1,D64T64,Mount Drive #9;",
 	"OP,Enable Drive #9,No,Yes;",
 	"-;",
-	"F,PRG,Load File;",
-	"F,CRT,Load Cartridge;",
+	"F4,PRG,Load File;",
+	"F5,CRT,Load Cartridge;",
 	"-;",
 	"F,TAP,Tape Load;",
 	"R7,Tape Play/Pause;",
@@ -422,6 +422,7 @@ cartridge cartridge
 	.IOF_ena(IOF_rom),
 	.max_ram(max_ram),
 	.freeze_key(freeze_key),
+	.mod_key(mod_key),
 	.nmi(nmi),
 	.nmi_ack(nmi_ack)
 );
@@ -710,6 +711,7 @@ wire        ram_ce;
 wire        ram_we;
 wire        nmi_ack;
 wire        freeze_key;
+wire        mod_key;
 
 wire        IOE;
 wire        IOF;
@@ -751,6 +753,7 @@ fpga64_sid_iec fpga64
 	.nmi_n(~nmi),
 	.nmi_ack(nmi_ack),
 	.freeze_key(freeze_key),
+	.mod_key(mod_key),
 	.dma_n(1'b1),
 	.roml(romL),
 	.romh(romH),
diff --git a/rtl/cartridge.v b/rtl/cartridge.v
index 7156724..0f83f72 100644
--- a/rtl/cartridge.v
+++ b/rtl/cartridge.v
@@ -44,6 +44,7 @@ module cartridge
 	output reg    max_ram,              // Enable whole C64 RAM in Ultimax mode
 
 	input         freeze_key,
+	input         mod_key,
 	output reg    nmi,
 	input         nmi_ack
 );
@@ -109,6 +110,7 @@ wire freeze_req = (~old_freeze & freeze_key);
 
 reg  old_nmiack = 0;
 wire freeze_ack = (nmi & ~old_nmiack & nmi_ack);
+wire freeze_crt = freeze_ack & ~mod_key;
 
 // 0018 - EXROM line status
 // 0019 - GAME line status
@@ -124,7 +126,7 @@ always @(posedge clk32) begin
 	if (!cart_attached) allow_freeze <= 1;  // Otherwise it defaults to 0 and freeze/restore does not work after dettaching a freezer (just once).
 	
 	old_freeze <= freeze_key;
-	if(freeze_req & allow_freeze) nmi <= 1;
+	if(freeze_req & (allow_freeze | mod_key)) nmi <= 1;
 
 	old_nmiack <= nmi_ack;
 	if(freeze_ack) nmi <= 0;
@@ -164,7 +166,7 @@ always @(posedge clk32) begin
 		// controlled by DE00
 		1:	begin
 				if(nmi) allow_freeze <= 0;
-				if(!init_n || freeze_ack) begin
+				if(!init_n || freeze_crt) begin
 					cart_disable  <= 0;
 					exrom_overide <= 1;
 					game_overide  <= 0;
@@ -238,7 +240,7 @@ always @(posedge clk32) begin
 						cart_disable <= c64_data_out[7];
 					end
 				end
-				if(freeze_ack) begin
+				if(freeze_crt) begin
 					cart_disable <= 0;
 					game_overide <= 0;
 					allow_freeze <= 0;
@@ -346,7 +348,7 @@ always @(posedge clk32) begin
 					IOF_ena <= 1;
 				end
 
-				if(freeze_ack) begin
+				if(freeze_crt) begin
 					game_overide <= 0;
 					allow_freeze <= 0;
 				end
@@ -406,7 +408,7 @@ always @(posedge clk32) begin
 
 		// Super Snapshot v5 -(64k rom 8*8k banks/4*16k banks, 32k ram 4*8k banks)
 		20: begin
-				if(!init_n || freeze_ack) begin
+				if(!init_n || freeze_crt) begin
 					init_n  <= 1;
 					romL_we <= 1;
 					bank_lo <= 0;
diff --git a/rtl/fpga64_keyboard.vhd b/rtl/fpga64_keyboard.vhd
index be0596d..655c2e5 100644
--- a/rtl/fpga64_keyboard.vhd
+++ b/rtl/fpga64_keyboard.vhd
@@ -47,6 +47,7 @@ entity fpga64_keyboard is
 		pbo: out unsigned(7 downto 0);
 		
 		restore_key : out std_logic;
+		mod_key     : out std_logic;
 		
 		-- Config
 		-- backwardsReadingEnabled = 1 allows reversal of PIA registers to still work.
@@ -138,6 +139,9 @@ architecture rtl of fpga64_keyboard is
 	signal key_Q: std_logic := '0';
 	signal key_runstop: std_logic := '0';
 
+	signal mod_key1: std_logic := '0';
+	signal mod_key2: std_logic := '0';
+
 	-- for joystick emulation on PS2
 	signal old_state : std_logic;
 
@@ -145,7 +149,9 @@ begin
 
 	pressed <= ps2_key(9);
 	--extended<= ps2_key(8);
-
+
+	mod_key <= mod_key1 or mod_key2;
+	
 	matrix: process(clk)
 	begin
 		if rising_edge(clk) then
@@ -328,12 +334,14 @@ begin
 				when X"1C" => key_A <= pressed; 
 				when X"1D" => key_W <= pressed; 
 				when X"1E" => key_2 <= pressed; 
+				when X"1F" => mod_key1 <= pressed; 
 				when X"21" => key_C <= pressed; 
 				when X"22" => key_X <= pressed; 
 				when X"23" => key_D <= pressed; 
 				when X"24" => key_E <= pressed; 
 				when X"25" => key_4 <= pressed; 
 				when X"26" => key_3 <= pressed; 
+				when X"27" => mod_key2 <= pressed; 
 				when X"29" => key_space <= pressed; 
 				when X"2A" => key_V <= pressed; 
 				when X"2B" => key_F <= pressed; 
diff --git a/rtl/fpga64_sid_iec.vhd b/rtl/fpga64_sid_iec.vhd
index 9745278..411e3e4 100644
--- a/rtl/fpga64_sid_iec.vhd
+++ b/rtl/fpga64_sid_iec.vhd
@@ -80,6 +80,7 @@ port(
 	IOF			: out std_logic;	-- cart signals LCA
 	CPU_hasbus  : out std_logic;	-- CPU has the bus STROBE
 	freeze_key  : out std_logic;
+	mod_key     : out std_logic;
 
 	ioF_ext     : in  std_logic;
 	ioE_ext     : in  std_logic;
@@ -732,6 +733,7 @@ port map (
 	pbo => cia1_pbi,
 
 	restore_key => freeze_key,
+	mod_key => mod_key,
 	backwardsReadingEnabled => '1'
 );