diff --git a/lib/emac/src/emac_rx.vhd b/lib/emac/src/emac_rx.vhd
index 1f5bdd0..62e8032 100644
--- a/lib/emac/src/emac_rx.vhd
+++ b/lib/emac/src/emac_rx.vhd
@@ -122,6 +122,7 @@ begin
 	ctrl_out.rx_size	<= cmd_fifo_dout(31 downto 16);
 	ctrl_out.rx_vld		<= not cmd_fifo_empty;
 	ctrl_out.rx_er		<= mii_rx_er;
+	ctrl_out.ram_ovf	<= xfer_ram_full;
 
 	dout				<= ram_dout_a;
 
diff --git a/lib/emac/src/emac_top_jb.vhd b/lib/emac/src/emac_top_jb.vhd
index bb82cc2..9e53b3b 100644
--- a/lib/emac/src/emac_top_jb.vhd
+++ b/lib/emac/src/emac_top_jb.vhd
@@ -111,26 +111,27 @@ registers_read:
 			rx_ctrl_in.data_read	<= '0';
 			ACK_O					<= rx_dout_vld and CYC_I and not WE_I;
 			DAT_O					<= rx_dout;
-			if (STB_I and CYC_I) = '1' then
+			if (STB_I and CYC_I) = '1' and WE_I = '0' then
 				case ADDR_I(5 downto 2) is
 
 				when "0000" =>
-					ACK_O		<= not WE_I;
+					ACK_O		<= '1';
 					DAT_O		<= (others => '0');
 					DAT_O(31)	<= tx_ctrl_in.tx_er;
 					DAT_O(30)	<= mii_rx_er;
 					DAT_O(29)	<= mii_col;
 					DAT_O(28)	<= mii_crs;
+					DAT_O(18)	<= rx_ctrl_out.ram_ovf;
 					DAT_O(17)	<= tx_ctrl_out.tx_req;
 					DAT_O(16)	<= rx_ctrl_out.rx_vld;
 					DAT_O(5)	<= tx_int_en;
 					DAT_O(4)	<= rx_int_en;
 				when "0001" => 
-					ACK_O		<= not WE_I;
+					ACK_O		<= '1';
 					DAT_O		<= tx_ctrl_out.tx_size & rx_ctrl_out.rx_size;
 
 				when "0010" =>
-					rx_ctrl_in.data_read	<= not WE_I;
+					rx_ctrl_in.data_read	<= '1';
 						
 				when others => null;
 				end case;
diff --git a/lib/emac/src/emac_types.vhd b/lib/emac/src/emac_types.vhd
index df5117a..9a28e6d 100644
--- a/lib/emac/src/emac_types.vhd
+++ b/lib/emac/src/emac_types.vhd
@@ -33,6 +33,7 @@ package emac_types is
 	type rx_ctrl_out_t is record
 		rx_er				: std_logic;
 		rx_vld				: std_logic;
+		ram_ovf				: std_logic;
 		rx_size				: unsigned(15 downto 0);
 	end record;