diff --git a/tools/pioasm/hex_output.cpp b/tools/pioasm/hex_output.cpp
new file mode 100644
index 0000000..39dd0fa
--- /dev/null
+++ b/tools/pioasm/hex_output.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include "output_format.h"
+#include <iostream>
+
+struct hex_output : public output_format {
+    struct factory {
+        factory() {
+            output_format::add(new hex_output());
+        }
+    };
+
+    hex_output() : output_format("hex") {}
+
+    std::string get_description() {
+        return "Raw hex output (only valid for single program inputs)";
+    }
+
+    virtual int output(std::string destination, std::vector<std::string> output_options,
+                       const compiled_source &source) {
+        FILE *out = open_single_output(destination);
+        if (!out) return 1;
+
+        if (source.programs.size() > 1) {
+            // todo don't have locations any more!
+            std::cerr << "error: hex output only supports a single program input\n";
+            return 1;
+        }
+        for (const auto &i : source.programs[0].instructions) {
+            fprintf(out, "%04x\n", i);
+        }
+        if (out != stdout) { fclose(out); }
+        return 0;
+    }
+};
+
+static hex_output::factory creator;