so close i can smell it, checkpoint

lib/arm/call_instruction.rb

@@ -1,6 +1,6 @@
 require_relative "instruction"
 
-module Asm
+module Arm
   # There are only three call instructions in arm branch (b), call (bl) and syscall (swi)
   
   # A branch could be called a jump as it has no notion of returning
@@ -13,7 +13,7 @@ module Asm
   # in Arm the register layout is different and so we have to place the syscall code into register 7
   # Registers 0-6 hold the call values as for a normal c call
   
-  class CallInstruction < Instruction
+  class CallInstruction < Vm::CallInstruction
     
     def assemble(io)
       case opcode