diff --git a/util/mario/tracer.py b/util/mario/tracer.py
index 4fb2e10..96e0ea5 100644
--- a/util/mario/tracer.py
+++ b/util/mario/tracer.py
@@ -21,6 +21,7 @@
         automatic integer tf; <%text>\\</%text>
         automatic `IDMA_TRACER_MAX_TYPE cnst [string]; <%text>\\</%text>
         automatic `IDMA_TRACER_MAX_TYPE meta [string]; <%text>\\</%text>
+        automatic `IDMA_TRACER_MAX_TYPE backend [string]; <%text>\\</%text>
         automatic `IDMA_TRACER_MAX_TYPE busy [string]; <%text>\\</%text>
         automatic `IDMA_TRACER_MAX_TYPE bus [string]; <%text>\\</%text>
         automatic string trace; <%text>\\</%text>
@@ -29,7 +30,9 @@
         $display("[iDMA Tracer] Logging %s to %s", `"__backend_inst`", __out_f); <%text>\\</%text>
         forever begin <%text>\\</%text>
             @(posedge __backend_inst``.clk_i); <%text>\\</%text>
-            if(__backend_inst``.rst_ni & |__backend_inst``.busy_o) begin <%text>\\</%text>
+            if(__backend_inst``.rst_ni & (|__backend_inst``.busy_o | <%text>\\</%text>
+                                          __backend_inst``.req_valid_i | <%text>\\</%text>
+                                          __backend_inst``.rsp_valid_o)) begin <%text>\\</%text>
                 /* Trace */ <%text>\\</%text>
                 trace = "{"; <%text>\\</%text>
                 /* Constants */ <%text>\\</%text>
@@ -55,6 +58,13 @@
                 meta = '{ <%text>\\</%text>
                     "time" : $time() <%text>\\</%text>
                 }; <%text>\\</%text>
+                backend = '{ <%text>\\</%text>
+                    "req_valid"  : __backend_inst``.req_valid_i, <%text>\\</%text>
+                    "req_ready"  : __backend_inst``.req_ready_o, <%text>\\</%text>
+                    "rsp_valid"  : __backend_inst``.rsp_valid_o, <%text>\\</%text>
+                    "rsp_ready"  : __backend_inst``.rsp_ready_i, <%text>\\</%text>
+                    "req_length" : __backend_inst``.idma_req_i.length <%text>\\</%text>
+                }; <%text>\\</%text>
                 busy = '{ <%text>\\</%text>
                     "buffer"      : __backend_inst``.busy_o.buffer_busy, <%text>\\</%text>
                     "r_dp"        : __backend_inst``.busy_o.r_dp_busy, <%text>\\</%text>
@@ -71,6 +81,7 @@
                 /* Assembly */ <%text>\\</%text>
                 `IDMA_TRACER_STR_ASSEMBLY(cnst, first_iter); <%text>\\</%text>
                 `IDMA_TRACER_STR_ASSEMBLY(meta, 1); <%text>\\</%text>
+                `IDMA_TRACER_STR_ASSEMBLY(backend, 1); <%text>\\</%text>
                 `IDMA_TRACER_STR_ASSEMBLY(busy, 1); <%text>\\</%text>
                 `IDMA_TRACER_STR_ASSEMBLY(bus, 1); <%text>\\</%text>
                 `IDMA_TRACER_CLEAR_COND(first_iter); <%text>\\</%text>