rename register to risc

seems to fit the layer much better as we really have a very reduced
instruction set

lib/risc/instructions/reg_to_byte.rb

@@ -0,0 +1,21 @@
+module Risc
+
+  # RegToByte moves a byte into memory from a register.
+
+  # indexes are 1 based !
+
+  class RegToByte < Setter
+
+  end
+
+  # Produce a RegToByte instruction.
+  # from and to are translated (from symbol to register if neccessary)
+  # but index is left as is.
+  def self.reg_to_byte( source , from , to , index)
+    from = resolve_to_register from
+    index = resolve_to_index( to , index)
+    to = resolve_to_register to
+    RegToByte.new( source, from , to , index)
+  end
+
+end