diff --git a/basic/test_data_port_periodic_three_domains_CASE/aadl/.gitignore b/basic/test_data_port_periodic_three_domains_CASE/aadl/.gitignore
new file mode 100644
index 0000000..11d04b4
--- /dev/null
+++ b/basic/test_data_port_periodic_three_domains_CASE/aadl/.gitignore
@@ -0,0 +1 @@
+/.aadlbin-gen/
diff --git a/basic/test_data_port_periodic_three_domains_CASE/aadl/.project b/basic/test_data_port_periodic_three_domains_CASE/aadl/.project
new file mode 100644
index 0000000..6464b53
--- /dev/null
+++ b/basic/test_data_port_periodic_three_domains_CASE/aadl/.project
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>test_data_port_periodic_three_domains_CASE</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.xtext.ui.shared.xtextBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.osate.core.aadlnature</nature>
+		<nature>org.eclipse.xtext.ui.shared.xtextNature</nature>
+	</natures>
+</projectDescription>
diff --git a/basic/test_data_port_periodic_three_domains_CASE/aadl/behavior_code/T1.c b/basic/test_data_port_periodic_three_domains_CASE/aadl/behavior_code/T1.c
new file mode 100644
index 0000000..1d244d7
--- /dev/null
+++ b/basic/test_data_port_periodic_three_domains_CASE/aadl/behavior_code/T1.c
@@ -0,0 +1,21 @@
+#include <camkes.h>
+#include <stdio.h>
+#include <sb_types.h>
+#include <sb_producer_thread_i.h>
+
+static int8_t _value;
+
+void init(const int64_t *in_arg) {
+  printf("[%s] called\n", get_instance_name());
+  _value = 0;
+}
+
+void compute(const int64_t *in_arg) {
+  printf("---------------------------------------\n");
+  if (sb_write_port_write( &_value )) {
+    printf("[%s] Sent %d\n", get_instance_name(), _value);
+    _value = (_value + 1) % 500;
+  } else {
+    printf("[%s] Unable to send\n", get_instance_name());
+  }
+}
\ No newline at end of file
diff --git a/basic/test_data_port_periodic_three_domains_CASE/aadl/behavior_code/T2.c b/basic/test_data_port_periodic_three_domains_CASE/aadl/behavior_code/T2.c
new file mode 100644
index 0000000..d05ff54
--- /dev/null
+++ b/basic/test_data_port_periodic_three_domains_CASE/aadl/behavior_code/T2.c
@@ -0,0 +1,24 @@
+#include <camkes.h>
+#include <stdio.h>
+#include <sb_types.h>
+#include <sb_consumer_thread_i.h>
+
+void init(const int64_t *in_arg) {
+  printf("[%s] init called\n", get_instance_name());
+}
+
+void compute(const int64_t * in_arg) {
+  int8_t _value;
+  
+  if (sb_read_port_read(&value)) {
+    printf("[%s] value {%d}\n", get_instance_name(), value);
+
+    if (sb_write_port_write( &_value )) {
+      printf("[%s] Sent %d\n", get_instance_name(), _value);
+    } else {
+      printf("[%s] Unable to send\n", get_instance_name());
+    }
+  } else {
+    printf("[%s] no value consumed.\n", get_instance_name());
+  }
+}
\ No newline at end of file
diff --git a/basic/test_data_port_periodic_three_domains_CASE/aadl/domain_schedule.c b/basic/test_data_port_periodic_three_domains_CASE/aadl/domain_schedule.c
new file mode 100644
index 0000000..7bd5e2f
--- /dev/null
+++ b/basic/test_data_port_periodic_three_domains_CASE/aadl/domain_schedule.c
@@ -0,0 +1,41 @@
+// Copyright 2020 Adventium Labs
+
+// This is a kernel data structure.
+
+#include <config.h>
+#include <object/structures.h>
+#include <model/statedata.h>
+
+// An arbitrary hand generated schedule. The length is in seL4 ticks
+// (2 ms default). This schedule should be generated from the AADL model
+// using execution time and data flow latency specifications.
+//
+// Pacer runs at highest rate
+//
+// This schedule is single-rate, 1Hz, run each thread at 200ms ticks for simplicity.
+// Fill space in with domain 0.
+//
+// 4 T3    |          -              -              -              -    
+// 3 T2    |        -              -              -              -      
+// 2 T1    |     -              -              -              -         
+// 1 pacer |  -              -              -              -            
+// 0 dom0  |-- -- -- - ------ -- -- - ------ -- -- - ------ -- -- - ----
+//         |______________|______________________________________________\time
+//           seconds      1              2              3              4 /
+//
+// Major frame is 1 seconds, since destination has 1 second period
+//
+const dschedule_t ksDomSchedule[] = { // (1 tick == 2ms)
+    { .domain = 0, .length = 100 }, // all other seL4 threads, init, 200ms
+    { .domain = 1, .length =   5 }, // T1                             10ms
+    { .domain = 0, .length =  95 }, // domain0                       190ms
+    { .domain = 2, .length =   5 }, // T2                             10ms
+    { .domain = 0, .length =  95 }, // domain0                       190ms
+    { .domain = 3, .length =   5 }, // T3                             10ms
+    { .domain = 0, .length = 195 }, // domain0                       390ms
+                                    // +
+                                    // -----------------------------------
+                                    //                              1000ms 
+};
+
+const word_t ksDomScheduleLength = sizeof(ksDomSchedule) / sizeof(dschedule_t);
diff --git a/basic/test_data_port_periodic_three_domains_CASE/aadl/test_data_port_periodic_three_domains.aadl b/basic/test_data_port_periodic_three_domains_CASE/aadl/test_data_port_periodic_three_domains.aadl
new file mode 100644
index 0000000..c8d7f09
--- /dev/null
+++ b/basic/test_data_port_periodic_three_domains_CASE/aadl/test_data_port_periodic_three_domains.aadl
@@ -0,0 +1,162 @@
+package test_data_port_periodic_three_domains
+public
+	with Base_Types;
+	with HAMR;
+	with CASE_Scheduling;
+
+	----------------------------------------------------------------------
+	-- O n e  
+	--   Thread T1
+	--   Process P1
+	--
+	-- thread specifies unit of temporal execution; depending on scheduling
+	--    model this can provide temporal isolation.
+	----------------------------------------------------------------------
+	thread T1
+		features
+			write_port: out data port Base_Types::Integer_8;
+		properties
+			Dispatch_Protocol => Periodic;
+			Period => 1000ms;
+			Compute_Execution_Time => 10ms .. 10ms;
+			Source_Text => ("behavior_code/T1.c");
+			Initialize_Entrypoint_Source_Text => "init";
+			Compute_Entrypoint_Source_Text => "compute";
+	end T1;
+
+	thread implementation T1.i
+	end T1.i;
+
+	-- process specifies boundary of spatial isolation
+	process P1
+		features
+			write_port: out data port Base_Types::Integer_8;
+	properties
+		CASE_Scheduling::Domain => 2;
+	end P1;
+
+	process implementation P1.i
+		subcomponents
+			t1: thread T1.i;
+		connections
+			write1: port t1.write_port -> write_port;
+	end P1.i;
+
+	----------------------------------------------------------------------
+	-- T w o  
+	--   Thread T2
+	--   Process P2
+	--
+	----------------------------------------------------------------------
+	thread T2
+		features
+			read_port: in data port Base_Types::Integer_8;
+			write_port: out data port Base_Types::Integer_8;
+		properties
+			Dispatch_Protocol => Periodic;
+			Period => 1000ms;
+			Compute_Execution_Time => 10ms .. 10ms;
+			Source_Text => ("behavior_code/T2.c");
+			Initialize_Entrypoint_Source_Text => "init";
+			Compute_Entrypoint_Source_Text => "compute";
+	end T2;
+
+	thread implementation T2.i
+	end T2.i;
+
+	-- process specifies boundary of spatial isolation
+	process P2
+		features
+			read_port: in data port Base_Types::Integer_8;
+			write_port: out data port Base_Types::Integer_8;
+		properties
+			CASE_Scheduling::Domain => 3;
+	end P2;
+
+	process implementation P2.i
+		subcomponents
+			t2: thread T2.i;
+		connections
+			read2: port read_port -> t2.read_port;
+
+			write2: port t2.write_port -> write_port;
+	end P2.i;
+
+	----------------------------------------------------------------------
+	-- T h r e e 
+	--   Thread T3
+	--   Process P3
+	--
+	----------------------------------------------------------------------
+	thread T3
+		features
+			read_port: in data port Base_Types::Integer_8;
+		properties
+			Dispatch_Protocol => Periodic;
+			Period => 1000ms;
+			Compute_Execution_Time => 10ms .. 10ms;
+	end T3;
+
+	thread implementation T3.i
+	end T3.i;
+
+	-- process specifies boundary of spatial isolation
+	process P3
+		features
+			read_port: in data port Base_Types::Integer_8;
+		properties
+			CASE_Scheduling::Domain => 4;
+	end P3;
+
+	process implementation P3.i
+		subcomponents
+			t3: thread T3.i;
+		connections
+			read3: port read_port -> t3.read_port;
+	end P3.i;
+
+
+	----------------------------------------------------------------------
+	processor proc
+	end proc;
+
+	processor implementation proc.impl
+		properties
+			Frame_Period => 1000ms;
+			Clock_Period => 2ms;
+			CASE_Scheduling::Max_Domain => 5;
+			CASE_Scheduling::Schedule_Source_Text => "domain_schedule.c";
+
+	end proc.impl;
+	
+	virtual processor virt_proc
+		properties
+			Dispatch_Protocol => Periodic;
+	end virt_proc;
+
+	----------------------------------------------------------------------
+	system top
+	end top;
+
+	system implementation top.impl
+		subcomponents
+			proc: processor proc.impl;
+			virt_proc: virtual processor virt_proc;
+			p1: process P1.i;
+			p2: process P2.i;
+			p3: process P3.i;
+		connections
+			c1: port p1.write_port -> p2.read_port;
+			c2: port p2.write_port -> p3.read_port;
+		properties
+			Actual_Processor_Binding => (reference (virt_proc)) applies to P3;
+			Actual_Processor_Binding => (reference (proc)) applies to P1, P2, virt_proc;
+
+			HAMR::Platform => (seL4);
+
+		annex resolute {**
+			check HAMR_Guidelines
+		**};
+	end top.impl;
+
+end test_data_port_periodic_three_domains;
\ No newline at end of file