diff --git a/Makefile b/Makefile
index c774034..08225bd 100644
--- a/Makefile
+++ b/Makefile
@@ -2,16 +2,20 @@ CXXFLAGS=-g -std=c++11
 
 all: v6502
 
-v6502: v6502.o cpu.o nodes.o SegmentCache.o
+v6502: v6502.o cpu.o nodes.o trans.o SegmentCache.o TransNetwork.o
 	g++ $^ -o $@
 
-v6502.o: v6502.cpp cpu.h addressbus.h
+v6502.o: v6502.cpp cpu.h addressbus.h TransNetwork.h 
 
 cpu.o: cpu.cpp cpu.h addressbus.h nodes.h
 
 nodes.o: nodes.cpp nodes.h
 
-SegmentCache.o : SegmentCache.cpp SegmentCache.h
+trans.o: trans.cpp trans.h SegmentCache.h
+
+SegmentCache.o: SegmentCache.cpp SegmentCache.h
+
+TransNetwork.o: TransNetwork.cpp TransNetwork.h trans.h
 
 clean:
 	-rm *.o
diff --git a/SegmentCache.cpp b/SegmentCache.cpp
index 4cff130..1a2bcad 100644
--- a/SegmentCache.cpp
+++ b/SegmentCache.cpp
@@ -6,9 +6,9 @@
  */
 
 #include "SegmentCache.h"
+#include <memory>
 #include <string>
 #include <map>
-#include <memory>
 #include <algorithm>
 
 Segment* SegmentCache::getOrAdd(std::string& id) {
diff --git a/TransNetwork.cpp b/TransNetwork.cpp
new file mode 100644
index 0000000..337e6c8
--- /dev/null
+++ b/TransNetwork.cpp
@@ -0,0 +1,28 @@
+/* 
+ * File:   TransNetwork.cpp
+ * Author: cmosher
+ * 
+ * Created on December 11, 2013, 10:44 AM
+ */
+
+#include "TransNetwork.h"
+#include "trans.h"
+#include "SegmentCache.h"
+#include <iostream>
+
+TransNetwork::TransNetwork(std::istream& readFromHere) {
+    SegmentCache segs;
+
+    std::string c1, gate, c2;
+    readFromHere >> c1 >> gate >> c2;
+    while (readFromHere.good()) {
+        Trans trans(segs.getOrAdd(c1), segs.getOrAdd(gate), segs.getOrAdd(c2));
+        std::cout << trans;
+
+        readFromHere >> c1 >> gate >> c2;
+    }
+    std::cout << std::endl << "done" << std::endl;
+}
+
+TransNetwork::~TransNetwork() {
+}
diff --git a/TransNetwork.h b/TransNetwork.h
new file mode 100644
index 0000000..21f7ac3
--- /dev/null
+++ b/TransNetwork.h
@@ -0,0 +1,23 @@
+/* 
+ * File:   TransNetwork.h
+ * Author: cmosher
+ *
+ * Created on December 11, 2013, 10:44 AM
+ */
+
+#ifndef TRANSNETWORK_H
+#define	TRANSNETWORK_H
+
+#include <istream>
+
+class TransNetwork {
+public:
+    TransNetwork(std::istream& readFromHere);
+    virtual ~TransNetwork();
+
+private:
+    TransNetwork(const TransNetwork&);
+    TransNetwork& operator=(const TransNetwork&);
+};
+
+#endif	/* TRANSNETWORK_H */
diff --git a/cpu.cpp b/cpu.cpp
index 2d7aeb0..0a10264 100644
--- a/cpu.cpp
+++ b/cpu.cpp
@@ -20,7 +20,6 @@
 
 
 
-
 #define TRACEREG 1
 //#define TRACESEG 1
 //#define TRACEMEM 1
diff --git a/trans.cpp b/trans.cpp
new file mode 100644
index 0000000..ef07706
--- /dev/null
+++ b/trans.cpp
@@ -0,0 +1,10 @@
+/* 
+ * File:   Trans.cpp
+ * Author: cmosher
+ * 
+ * Created on December 11, 2013, 10:44 AM
+ */
+
+#include "trans.h"
+#include "SegmentCache.h"
+#include <istream>
diff --git a/trans.h b/trans.h
index 9e3f8c0..8d38152 100644
--- a/trans.h
+++ b/trans.h
@@ -10,8 +10,10 @@
 
 #include <string>
 #include <vector>
+#include <iostream>
 
 class Trans;
+class SegmentCache;
 
 class Segment {
 public:
@@ -28,12 +30,23 @@ public:
 };
 
 class Trans {
-public:
+private:
     Segment* c1;
     Segment* gate;
     Segment* c2;
 
     bool on;
+
+public:
+    Trans(Segment* c1, Segment* gate, Segment* c2) : on(false), c1(c1), gate(gate), c2(c2) {
+    }
+
+    virtual ~Trans() {
+    }
+
+private:
+    Trans(const Trans&);
+    Trans& operator=(const Trans&);
 };
 
 #endif	/* TRANS_H */
diff --git a/v6502.cpp b/v6502.cpp
index 63705ce..e06f515 100644
--- a/v6502.cpp
+++ b/v6502.cpp
@@ -12,6 +12,8 @@
 #include "addressbus.h"
 #include "cpu.h"
 
+#include "TransNetwork.h"
+
 //memory[0xFF] = 0x68;  // PLA
 
 //memory[0xFF] = 0xFF;
@@ -36,6 +38,15 @@
 //}
 
 int main(int argc, char *argv[]) {
+    std::ifstream if_trans("transistors");
+    if (!if_trans.is_open()) {
+        std::cerr << "error opening file: transistors" << std::endl;
+        exit(EXIT_FAILURE);
+    }
+    TransNetwork n(if_trans);
+}
+
+int xxxmain(int argc, char *argv[]) {
     AddressBus mem;
     CPU cpu(mem);