diff --git a/microcompiler.kt b/microcompiler.kt
index c4d2c10..7d11a60 100644
--- a/microcompiler.kt
+++ b/microcompiler.kt
@@ -267,6 +267,13 @@ fun parseALU(instr: String): MicroInstruction {
     val args = instr.split(" ")
     if(args.size != 2) throw RuntimeException("Unexpected arguments: $instr")
 
+    try{
+        val num = readNumber(args[1], 65535)
+        return MicroInstruction(ALU.matchName(args[0])!!, num)
+    }catch(e: NumberFormatException){
+        // NaN
+    }
+
     val source = Register.lookup(args[1])
     if(!source.canRead) throw RuntimeException("Cannot read from source: $instr")