diff --git a/machine.config.js b/machine.config.js
new file mode 100644
index 0000000..3d8938a
--- /dev/null
+++ b/machine.config.js
@@ -0,0 +1,5 @@
+module.exports = {
+  "INITIAL_IP_ADDRESS":  48,
+  "START_OF_DISPLAY_MEM": 0,
+  "CYCLE_LIMIT": 128, // max number of times to step the CPU, to stop endless loops
+}
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