diff --git a/lib/VGA_ctrl/src/vga_frontend64.vhd b/lib/VGA_ctrl/src/vga_frontend64.vhd
index cd33c3f..04e999b 100644
--- a/lib/VGA_ctrl/src/vga_frontend64.vhd
+++ b/lib/VGA_ctrl/src/vga_frontend64.vhd
@@ -138,6 +138,7 @@ architecture Behavioral of vga_frontend64 is
 	signal blit_dimx_src_0		: unsigned(31 downto 0);
 	signal blit_dimx_src_1		: unsigned(31 downto 0);
 	signal blit_dimx_dst		: unsigned(31 downto 0);
+	signal host_blit_nx			: unsigned(31 downto 0);
 	signal blit_nx				: unsigned(31 downto 0);
 	signal blit_ny				: unsigned(31 downto 0);
 	signal blit_func_sel		: unsigned(3 downto 0);
@@ -771,7 +772,7 @@ registers_read:
 
 				-- sys_blit_nx			56
 				when "1110" =>
-					SDAT_O				<= blit_nx;
+					SDAT_O				<= host_blit_nx;
 
 				-- sys_blit_ny			60
 				when "1111" =>
@@ -842,40 +843,41 @@ registers_write:
 
 				-- sys_vga_fb_front	24
 				when "0110" =>
-					host_fb_front	<= SDAT_I(31 downto 2) & "00";
+					host_fb_front	<= SDAT_I(31 downto 3) & "000";
 					
 				-- sys_vga_fb_back	28
 				when "0111" =>
 					bufchg_flag_ack	<= '1';
-					host_fb_back	<= SDAT_I(31 downto 2) & "00";
+					host_fb_back	<= SDAT_I(31 downto 3) & "000";
 					
 				-- sys_blit_addr_src_0	32
 				when "1000" =>
-					blit_addr_src_0		<= SDAT_I;
+					blit_addr_src_0		<= SDAT_I(31 downto 3) & "000";
 
 				-- sys_blit_addr_src_1	36
 				when "1001" =>
-					blit_addr_src_1		<= SDAT_I;
+					blit_addr_src_1		<= SDAT_I(31 downto 3) & "000";
 
 				-- sys_blit_addr_dst	40
 				when "1010" =>
-					blit_addr_dst		<= SDAT_I;
+					blit_addr_dst		<= SDAT_I(31 downto 3) & "000";
 
 				-- sys_blit_dimx_src_0	44
 				when "1011" =>
-					blit_dimx_src_0		<= SDAT_I;
+					blit_dimx_src_0		<= SDAT_I(31 downto 3) & "000";
 
 				-- sys_blit_dimx_src_1	48
 				when "1100" =>
-					blit_dimx_src_1		<= SDAT_I;
+					blit_dimx_src_1		<= SDAT_I(31 downto 3) & "000";
 
 				-- sys_blit_dimx_dst	52
 				when "1101" =>
-					blit_dimx_dst		<= SDAT_I;
+					blit_dimx_dst		<= SDAT_I(31 downto 3) & "000";
 
 				-- sys_blit_nx			56
 				when "1110" =>
-					blit_nx				<= SDAT_I;
+					host_blit_nx		<= SDAT_I;
+					blit_nx				<= '0' & SDAT_I(31 downto 1);
 
 				-- sys_blit_ny			60
 				when "1111" =>