From 4f97303e4443647022c78c2454840e2c28caa221 Mon Sep 17 00:00:00 2001
From: Alex Forencich <alex@alexforencich.com>
Date: Sun, 16 Jun 2019 15:38:35 -0700
Subject: [PATCH] Remove unused code

---
 rtl/axis_xgmii_rx_32.v | 11 -----------
 rtl/axis_xgmii_rx_64.v | 15 ---------------
 2 files changed, 26 deletions(-)

diff --git a/rtl/axis_xgmii_rx_32.v b/rtl/axis_xgmii_rx_32.v
index 7980bd5a..62a109ec 100644
--- a/rtl/axis_xgmii_rx_32.v
+++ b/rtl/axis_xgmii_rx_32.v
@@ -221,9 +221,7 @@ eth_crc_32 (
 );
 
 // detect control characters
-reg [3:0] detect_start;
 reg [3:0] detect_term;
-reg [3:0] detect_error;
 
 reg [3:0] detect_term_save;
 
@@ -231,46 +229,37 @@ integer i;
 
 always @* begin
     for (i = 0; i < 4; i = i + 1) begin
-        detect_start[i] = xgmii_rxc_d0[i] && (xgmii_rxd_d0[i*8 +: 8] == XGMII_START);
         detect_term[i] = xgmii_rxc_d0[i] && (xgmii_rxd_d0[i*8 +: 8] == XGMII_TERM);
-        detect_error[i] = xgmii_rxc_d0[i] && (xgmii_rxd_d0[i*8 +: 8] == XGMII_ERROR);
     end
 end
 
 // mask errors to within packet
-reg [3:0] detect_error_masked;
 reg [3:0] control_masked;
 reg [3:0] tkeep_mask;
 
 always @* begin
     casez (detect_term)
     4'b0000: begin
-        detect_error_masked = detect_error;
         control_masked = xgmii_rxc_d0;
         tkeep_mask = 4'b1111;
     end
     4'bzzz1: begin
-        detect_error_masked = 0;
         control_masked = 0;
         tkeep_mask = 4'b0000;   
     end
     4'bzz10: begin
-        detect_error_masked = detect_error[0];
         control_masked = xgmii_rxc_d0[0];
         tkeep_mask = 4'b0001;
     end
     4'bz100: begin
-        detect_error_masked = detect_error[1:0];
         control_masked = xgmii_rxc_d0[1:0];
         tkeep_mask = 4'b0011;
     end
     4'b1000: begin
-        detect_error_masked = detect_error[2:0];
         control_masked = xgmii_rxc_d0[2:0];
         tkeep_mask = 4'b0111;
     end
     default: begin
-        detect_error_masked = detect_error;
         control_masked = xgmii_rxc_d0;
         tkeep_mask = 4'b1111;
     end
diff --git a/rtl/axis_xgmii_rx_64.v b/rtl/axis_xgmii_rx_64.v
index d8021bc3..889ccd37 100644
--- a/rtl/axis_xgmii_rx_64.v
+++ b/rtl/axis_xgmii_rx_64.v
@@ -241,9 +241,7 @@ eth_crc_64 (
 );
 
 // detect control characters
-reg [7:0] detect_start;
 reg [7:0] detect_term;
-reg [7:0] detect_error;
 
 reg [7:0] detect_term_save = 8'd0;
 
@@ -251,66 +249,53 @@ integer i;
 
 always @* begin
     for (i = 0; i < 8; i = i + 1) begin
-        detect_start[i] = xgmii_rxc_d0[i] && (xgmii_rxd_d0[i*8 +: 8] == XGMII_START);
         detect_term[i] = xgmii_rxc_d0[i] && (xgmii_rxd_d0[i*8 +: 8] == XGMII_TERM);
-        detect_error[i] = xgmii_rxc_d0[i] && (xgmii_rxd_d0[i*8 +: 8] == XGMII_ERROR);
     end
 end
 
 // mask errors to within packet
-reg [7:0] detect_error_masked;
 reg [7:0] control_masked;
 reg [7:0] tkeep_mask;
 
 always @* begin
     casez (detect_term)
     8'b00000000: begin
-        detect_error_masked = detect_error;
         control_masked = xgmii_rxc_d0;
         tkeep_mask = 8'b11111111;
     end
     8'bzzzzzzz1: begin
-        detect_error_masked = 0;
         control_masked = 0;
         tkeep_mask = 8'b00000000;
     end
     8'bzzzzzz10: begin
-        detect_error_masked = detect_error[0];
         control_masked = xgmii_rxc_d0[0];
         tkeep_mask = 8'b00000001;
     end
     8'bzzzzz100: begin
-        detect_error_masked = detect_error[1:0];
         control_masked = xgmii_rxc_d0[1:0];
         tkeep_mask = 8'b00000011;
     end
     8'bzzzz1000: begin
-        detect_error_masked = detect_error[2:0];
         control_masked = xgmii_rxc_d0[2:0];
         tkeep_mask = 8'b00000111;
     end
     8'bzzz10000: begin
-        detect_error_masked = detect_error[3:0];
         control_masked = xgmii_rxc_d0[3:0];
         tkeep_mask = 8'b00001111;
     end
     8'bzz100000: begin
-        detect_error_masked = detect_error[4:0];
         control_masked = xgmii_rxc_d0[4:0];
         tkeep_mask = 8'b00011111;
     end
     8'bz1000000: begin
-        detect_error_masked = detect_error[5:0];
         control_masked = xgmii_rxc_d0[5:0];
         tkeep_mask = 8'b00111111;
     end
     8'b10000000: begin
-        detect_error_masked = detect_error[6:0];
         control_masked = xgmii_rxc_d0[6:0];
         tkeep_mask = 8'b01111111;
     end
     default: begin
-        detect_error_masked = detect_error;
         control_masked = xgmii_rxc_d0;
         tkeep_mask = 8'b11111111;
     end