Some cleanup, minor clarifications, removed some commented code.

examples/pulse_chord.asm

@@ -37,7 +37,7 @@
   sei                   ; SEt Interrupt (Disables them)
   cld                   ; CLear Decimal Mode
 
-  ldx #$ff              
+  ldx #$ff
   txs                   ; Set the stack pointer
 
   ldx #$00

lib/n65/instruction.rb

@@ -171,10 +171,10 @@ module N65
     ##  OpCodes contains the definitions of each OpCode
     def initialize(op, arg, mode, byte_selector = nil)
 
-      ##  Lookup the definition of this opcode, otherwise it is an invalid instruction
       @byte_selector = byte_selector.nil? ? nil : byte_selector.to_sym
       fail(InvalidInstruction, "Bad Byte selector: #{byte_selector}") unless [:>, :<, nil].include?(@byte_selector)
 
+      ##  Lookup the definition of this opcode, otherwise it is an invalid instruction
       @op = op.downcase.to_sym
       definition = OpCodes[@op]
       fail(InvalidInstruction, op) if definition.nil?
@@ -195,7 +195,7 @@ module N65
 
 
     ####
-    ##  Return if this instruction is a zero page instruction
+    ##  Is this instruction a zero page instruction?
     def zero_page_instruction?
       [:zero_page, :zero_page_x, :zero_page_y].include?(@mode)
     end
@@ -224,8 +224,7 @@ module N65
         assembler.write_memory(emit_bytes)
       when String
         begin
-          ##  This is a bug, I don't believe it will ever get here.
+          ##  This works correctly now :)
-          ##  I think it always resolves every symbol later.
           promise.call
         rescue SymbolTable::UndefinedSymbol
           placeholder = [@hex, 0xDE, 0xAD][0...@length]
@@ -270,18 +269,6 @@ module N65
     end
 
 
-    ####
-    ##  Pretty Print
-    def to_s
-      #display = AddressingModes[@mode][:display]
-      #if @arg.kind_of?(String)
-        #sprintf("#{display} (#{@mode}, #{@arg})", @op, 0x0)
-      #else
-        #sprintf("#{display} (#{@mode})", @op, @arg)
-      #end
-    end
-
-
     private
     ####
     ##  Break an integer into two 8-bit parts

lib/n65/memory_space.rb

@@ -117,9 +117,9 @@ module N65
         unless address_inside_char_rom?(address)
           fail(AccessOutsideCharRom, sprintf("Address $%.4X is outside CHAR ROM", address))
         end
-        address
+        return address
       else
-        address
+        return address
       end
     end
 

nes_lib/nes.sym

@@ -1,6 +1,6 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ;  Let's start a little library for naming parts of memory in the NES
-;  
+;
 ;  Including this file will not emit any instructions or data into your binary
 ;  It only defines symbols in the symbol table to name memory addresses
 ;
@@ -75,7 +75,7 @@
   .space controller2 1                             ; $4017
   .scope mapper
     .org $8000
-    .space unrom 1                                 
+    .space unrom 1
     .org $8000
     .space cnrom 1
     .org $8000