diff --git a/sync_rtl/top/TB/tb_mlkem_kg_katK_xsim.v b/sync_rtl/top/TB/tb_mlkem_kg_katK_xsim.v
index dad77b5..d9e5699 100644
--- a/sync_rtl/top/TB/tb_mlkem_kg_katK_xsim.v
+++ b/sync_rtl/top/TB/tb_mlkem_kg_katK_xsim.v
@@ -32,9 +32,26 @@ module tb_mlkem_kg_katK_xsim;
     reg [255:0] zmem [0:0];
     reg [7:0]   ek_gold [0:EKB-1];
     reg [7:0]   dk_gold [0:DKB-1];
-    integer c, i, errors, casenum;
+    reg [7:0]   ek_got  [0:EKB-1];   // ek bytes read back from DUT
+    reg [7:0]   dk_got  [0:DKB-1];   // dk bytes read back from DUT
+    integer c, i, errors, casenum, j;
     reg [8*80-1:0] tag, dfile, zfile, ekfile, dkfile;
 
+    // Dump a byte array as offset-prefixed hex, 32 bytes/line.
+    task dump_bytes(input [8*16-1:0] name, input integer n);
+        integer a, b;
+        begin
+            for (a = 0; a < n; a = a + 32) begin
+                $write("  %0s[%4d] ", name, a);
+                for (b = a; b < a+32 && b < n; b = b + 1) begin
+                    if (name == "ek") $write("%02x", ek_got[b]);
+                    else               $write("%02x", dk_got[b]);
+                end
+                $write("\n");
+            end
+        end
+    endtask
+
     initial begin
         if (!$value$plusargs("CASE=%d", casenum)) casenum = 0;
         $sformat(tag, "k%0d", KP);
@@ -49,6 +66,11 @@ module tb_mlkem_kg_katK_xsim;
         d_i = dmem[0]; z_i = zmem[0];
         k_i = KP[2:0];
 
+        // ---- show the KeyGen inputs (d, z seeds: 32 bytes each, MSB-first) ----
+        $display("=== ML-KEM K=%0d KAT case %0d INPUTS ===", KP, casenum);
+        $write("  d = "); for (j = 0; j < 32; j = j + 1) $write("%02x", d_i[8*(31-j) +: 8]); $write("\n");
+        $write("  z = "); for (j = 0; j < 32; j = j + 1) $write("%02x", z_i[8*(31-j) +: 8]); $write("\n");
+
         rst_n=0; repeat(4) @(posedge clk); rst_n=1; @(posedge clk);
         start_i=1; @(posedge clk); start_i=0;
         c=0; while(!done_o && c<2000000) begin @(posedge clk); c=c+1; end
@@ -59,6 +81,7 @@ module tb_mlkem_kg_katK_xsim;
         dbg_byte_sel_i = 1'b0;
         for (i = 0; i < EKB; i = i + 1) begin
             dbg_byte_idx_i = i[10:0]; @(posedge clk); @(posedge clk);
+            ek_got[i] = dbg_byte_o;
             if (dbg_byte_o !== ek_gold[i]) begin
                 if (errors < 8) $display("  EK[%0d] got=%02x exp=%02x", i, dbg_byte_o, ek_gold[i]);
                 errors = errors + 1;
@@ -66,11 +89,18 @@ module tb_mlkem_kg_katK_xsim;
         end
         for (i = 0; i < DKB; i = i + 1) begin
             dbg_dk_idx_i = i[11:0]; @(posedge clk); @(posedge clk);
+            dk_got[i] = dbg_dk_o;
             if (dbg_dk_o !== dk_gold[i]) begin
                 if (errors < 8) $display("  DK[%0d] got=%02x exp=%02x", i, dbg_dk_o, dk_gold[i]);
                 errors = errors + 1;
             end
         end
+
+        // ---- show the KeyGen outputs (ek, dk byte strings read from DUT) ----
+        $display("=== ML-KEM K=%0d KAT case %0d OUTPUTS ===", KP, casenum);
+        $display("  ek (%0d bytes):", EKB); dump_bytes("ek", EKB);
+        $display("  dk (%0d bytes):", DKB); dump_bytes("dk", DKB);
+
         if (errors == 0) $display("K=%0d CASE %0d PASS: ek (%0dB)==pk, dk (%0dB)==sk", KP, casenum, EKB, DKB);
         else             $display("K=%0d CASE %0d FAIL: %0d mismatches", KP, casenum, errors);
         $finish;