diff --git a/lib-ruby/io/console.rb b/lib-ruby/io/console.rb
new file mode 100644
index 000000000..d7b2d9e88
--- /dev/null
+++ b/lib-ruby/io/console.rb
@@ -0,0 +1,82 @@
+class IO
+  # Indexes for termios list.
+  IFLAG = 0
+  OFLAG = 1
+  CFLAG = 2
+  LFLAG = 3
+  ISPEED = 4
+  OSPEED = 5
+  CC = 6
+  include Topaz::TermIOConstants
+
+  # def raw
+  # end
+
+  def raw!(&block)
+    mode = Topaz.tcgetattr(fileno)
+    mode[IFLAG] = mode[IFLAG] & ~(IGNBRK | BRKINT | PARMRK | ISTRIP | ICRNL |
+                                  IXON)
+    mode[OFLAG] = mode[OFLAG] & ~(OPOST)
+    mode[CFLAG] = mode[CFLAG] & ~(CSIZE | PARENB)
+    mode[CFLAG] = mode[CFLAG] | CS8
+    mode[LFLAG] = mode[LFLAG] & ~(ECHO | ECHOE | ECHOK | ECHONL | ICANON | ISIG |
+                                  IEXTEN)
+    Topaz.tcsetattr(fileno, TCSANOW, mode)
+    if block
+      begin
+        block[]
+      ensure
+        cooked!
+      end
+    end
+  end
+
+  # def cooked
+  # end
+
+  def cooked!
+    mode = Topaz.tcgetattr(fileno)
+    mode[IFLAG] = mode[IFLAG] | (BRKINT | ISTRIP | ICRNL | IXON)
+    mode[OFLAG] = mode[OFLAG] | OPOST
+    mode[LFLAG] = mode[LFLAG] | (ECHO | ECHOE | ECHOK | ECHONL | ICANON | ISIG |
+                                 IEXTEN)
+    Topaz.tcsetattr(fileno, TCSANOW, mode)
+  end
+
+  # def getch
+  # end
+
+  # def echo=
+  # end
+
+  # def echo
+  # end
+
+  # def echo?
+  # end
+
+  # def noecho
+  # end
+
+  # def winsize
+  # end
+
+  # def winsize=
+  # end
+
+  # def iflush
+  # end
+
+  # def oflush
+  # end
+
+  # def ioflush
+  # end
+
+  # def self.console
+  # end
+
+  # module Readable
+  #   alias getch getc
+  # end
+end
diff --git a/lib-ruby/io/wait.rb b/lib-ruby/io/wait.rb
new file mode 100644
index 000000000..e69de29bb
diff --git a/topaz/modules/topaz.py b/topaz/modules/topaz.py
index 935377ffc..a6b4edee0 100644
--- a/topaz/modules/topaz.py
+++ b/topaz/modules/topaz.py
@@ -4,6 +4,7 @@
 from rpython.rlib.rarithmetic import intmask
 from rpython.rlib.rtermios import tcsetattr, tcgetattr, all_constants
 
+from topaz.error import error_for_oserror
 from topaz.module import ModuleDef
 from topaz.objects.classobject import W_ClassObject
 
@@ -14,8 +15,9 @@ class Topaz(object):
     @moduledef.setup_module
     def setup_module(space, w_mod):
         space.set_const(w_mod, "FIXNUM_MAX", space.newint(sys.maxint))
-        w_termioconsts = space.newclass("TermIOConstants", None)
-        for name, value in all_constants:
+        w_termioconsts = space.newmodule("TermIOConstants", None)
+        space.set_const(w_mod, "TermIOConstants", w_termioconsts)
+        for name, value in all_constants.iteritems():
             space.set_const(w_termioconsts, name, space.newint(value))
 
     @moduledef.function("intmask")
@@ -62,7 +64,7 @@ def method_tcsetattr(self, space, fd, when, mode_w):
         try:
             tcsetattr(fd, when, mode)
         except OSError as e:
-            raise space.error_for_oserror(e)
+            raise error_for_oserror(space, e)
         return self
 
     @moduledef.function("tcgetattr", fd="int")
@@ -70,7 +72,7 @@ def method_tcsetattr(self, space, fd):
         try:
             mode = tcgetattr(fd)
         except OSError as e:
-            raise space.error_for_oserror(e)
+            raise error_for_oserror(space, e)
         mode_w = [
             space.newint(mode[0]), # iflag
             space.newint(mode[1]), # oflag
@@ -78,6 +80,6 @@ def method_tcsetattr(self, space, fd):
             space.newint(mode[3]), # lflag
             space.newint(mode[4]), # ispeed
             space.newint(mode[5]), # ospeed
-            space.newarray([space.newstr_fromstr(cc) in mode[6]])
+            space.newarray([space.newstr_fromstr(cc) for cc in mode[6]])
         ]
         return space.newarray(mode_w)
diff --git a/topaz/objects/ioobject.py b/topaz/objects/ioobject.py
index c8008dcd3..2c14fa575 100644
--- a/topaz/objects/ioobject.py
+++ b/topaz/objects/ioobject.py
@@ -1,7 +1,6 @@
 import os
 
 from rpython.rlib.rpoll import POLLIN
-from rpython.rlib.rtermios import tcsetattr
 
 from topaz.coerce import Coerce
 from topaz.error import error_for_oserror
@@ -293,6 +292,3 @@ def method_ready(self, space):
         except PollError:
             return space.w_nil
         return space.newbool(len(retval) > 0)
-
-    @classdef.method("raw!")
-    def method_raw_bang(self, space):