diff --git a/sdk/software/examples/asm/user-sample.c b/sdk/software/examples/asm/user-sample.c
index 13bb14a..4cae639 100644
--- a/sdk/software/examples/asm/user-sample.c
+++ b/sdk/software/examples/asm/user-sample.c
@@ -184,8 +184,18 @@ int main(void)
         REG_WR(MATMUL_CTRL, CTRL_START);
         wait_done();
         read_ip(MATMUL_C_BASE, c_buf, 48);
+        if (g == 1) {
+            printf("DBG A[0]=%08lx B[0]=%08lx C[0..2]=%08lx %08lx %08lx\n",
+                   (unsigned long)a_buf[0], (unsigned long)b_buf[0],
+                   (unsigned long)c_buf[0], (unsigned long)c_buf[1],
+                   (unsigned long)c_buf[2]);
+        }
         for (i = 0; i < 48; i++)
             extram[DST_BASE + g * 48 + i] = c_buf[i];
+        if (g == 0) {
+            printf("DBG wrote C[0]=%08lx @ ExtRAM[%d]\n",
+                   (unsigned long)extram[DST_BASE], DST_BASE);
+        }
     }
 
     /* ── CRC32 over result region ─────────────────────────────── */