diff --git a/doc/plan.org b/doc/plan.org
index 188ee5b..9bf40f1 100644
--- a/doc/plan.org
+++ b/doc/plan.org
@@ -4971,6 +4971,11 @@ else:
     - Checksums match, but we only update it using
       HashAlgorithm.csum16
 
+*** 2019-07-10:
+    To be finished today:
+    - delta on bmv2
+    - general compile on netpfga
+
 ** References / Follow up
 *** RFC 791 IPv4 https://tools.ietf.org/html/rfc791
 *** RFC 792 ICMP https://tools.ietf.org/html/rfc792
diff --git a/p4app/test.json b/p4app/test.json
new file mode 100644
index 0000000..27d95e5
--- /dev/null
+++ b/p4app/test.json
@@ -0,0 +1,48 @@
+{
+  "program": "../p4src/checksum_diff.p4",
+  "switch": "simple_switch",
+  "compiler": "p4c",
+  "options": "--target bmv2 --arch v1model --std p4-16",
+  "switch_cli": "simple_switch_CLI",
+  "cli": true,
+  "pcap_dump": true,
+  "enable_log": true,
+  "topo_module": {
+    "file_path": "",
+    "module_name": "p4utils.mininetlib.apptopo",
+    "object_name": "AppTopoStrategies"
+  },
+  "controller_module": null,
+  "topodb_module": {
+    "file_path": "",
+    "module_name": "p4utils.utils.topology",
+    "object_name": "Topology"
+  },
+  "mininet_module": {
+    "file_path": "",
+    "module_name": "p4utils.mininetlib.p4net",
+    "object_name": "P4Mininet"
+  },
+    "topology": {
+        "assignment_strategy": "l2",
+        "auto_arp_tables": false,
+        "links": [["h1", "s1"], ["h2", "s1"], ["h3", "s1"], ["h4","s1"]],
+        "hosts": {
+            "h1": {
+            },
+            "h2": {
+            }
+            ,
+            "h3": {
+            }
+            ,
+            "h4": {
+            }
+        },
+        "switches": {
+            "s1": {
+	            "cpu_port" : true
+            }
+        }
+    }
+}
diff --git a/p4src/checksum_diff.p4 b/p4src/checksum_diff.p4
index 75ec6cb..beb96da 100644
--- a/p4src/checksum_diff.p4
+++ b/p4src/checksum_diff.p4
@@ -128,6 +128,7 @@ control MyDeparser(packet_out packet, in headers hdr) {
     }
 }
 
+// OK-UNTIL-HERE
 
 /*************************************************************************
 **************  I N G R E S S   P R O C E S S I N G   *******************
@@ -772,7 +773,6 @@ control MyComputeChecksum(inout headers  hdr, inout metadata meta) {
 *************************************************************************/
 
 
-
 V1Switch(
     MyParser(),
     MyVerifyChecksum(),