From: darren kirby [mailto:bulliver / badcomputer.org] 
# def load_byte(destination, base_address, offset)
#   <snip 15 lines>
#   @registers.gen[destination] = bitstring_to_int(byte)
#    true
# end
# 
# def load_byte_unsigned(destination, base_address, offset)
#   <snip 15 lines>
#   @registers.gen[destination] = bitstring_to_int(byte, signed=false)
#    true
# end

def load_byte(destination, base_address, offset, signed=true)
   <snip 15 lines>
   @registers.gen[destination] = bitstring_to_int(byte,signed)
   true
end

load_byte(destination, base_address, offset)   #signed
load_byte(destination, base_address, offset, signed=false)  #unsigned