--- a/sidlib.c	Wed Feb 07 17:02:49 2018 +0200
+++ b/sidlib.c	Fri Feb 16 21:24:28 2018 +0200
@@ -139,6 +139,7 @@
         read = thfread(data, sizeof(uint8_t), PSID_BUFFER_SIZE, ctx);
         psid->dataSize += read;
 
+        // If load address is 0 in header and we have the first block, grab it
         if (first && psid->loadAddress == 0)
         {
             if (read < 4)
@@ -148,17 +149,17 @@
                 goto error;
             }
 
-            // Grab the actual load address
+            // Grab the load address
             psid->loadAddress = TH_LE16_TO_NATIVE(*(uint16_t *) data);
 
-            // Strip load address (2 first bytes)
+            // .. do not include the load address to the hash
             th_md5_append(&state, &data[2], read - 2);
             first = FALSE;
         }
         else
         if (read > 0)
         {
-            // Append "as is"
+            // Append data "as is"
             th_md5_append(&state, data, read);
         }
     } while (read > 0 && !thfeof(ctx));