1 files changed, 3 insertions, 0 deletions

diff --git a/io/model.h b/io/model.h
index 2826170..f8a852b 100644
--- a/io/model.h
+++ b/io/model.h
@@ -3,6 +3,7 @@
 #include <array>
 #include <cstdint>
 #include <istream>
+#include <ostream>
 
 #include "io/event.h"
 #include "isa/isa.h"
@@ -19,4 +20,6 @@ struct iomodel {
 
     std::uint64_t load_time = 0;
     void load_evt(std::istream &fh);
+
+    std::ostream & write_evt(std::ostream &fh);
 };