diff --git a/vhdl/arty_a7.vhdl b/vhdl/arty_a7.vhdl
index 7e043c4..b9c388a 100644
--- a/vhdl/arty_a7.vhdl
+++ b/vhdl/arty_a7.vhdl
@@ -36,7 +36,7 @@ entity arty_a7 is
 		-- when necessary
 		pmod_a : out std_logic_vector(7 downto 0);
 		pmod_b : out std_logic_vector(7 downto 0);
-		pmod_c : in std_logic_vector(7 downto 0);
+		pmod_c : out std_logic_vector(7 downto 0);
 		pmod_d : out std_logic_vector(7 downto 0);
 
 		clock_100mhz : in std_logic;
@@ -320,9 +320,10 @@ begin
 
 	sys_reset <= not pll_locked or not n_reset;
 
-	pmod_a <= drivers(7 downto 0);
-	pmod_b <= drivers(15 downto 8);
-	pmod_d <= drivers(23 downto 16);
+	pmod_a <= "00" & drivers(5 downto 0);
+	pmod_b <= "00" & drivers(11 downto 6);
+	pmod_c <= "00" & drivers(17 downto 12);
+	pmod_d <= "00" & drivers(23 downto 18);
 
 	sender: process(sys_clk)
 	begin