diff --git a/library/compiler/stack.factor b/library/compiler/stack.factor
new file mode 100644
index 0000000000..ebdb3fb0b6
--- /dev/null
+++ b/library/compiler/stack.factor
@@ -0,0 +1,43 @@
+! :folding=indent:collapseFolds=1:
+
+! $Id$
+!
+! Copyright (C) 2004 Slava Pestov.
+! 
+! Redistribution and use in source and binary forms, with or without
+! modification, are permitted provided that the following conditions are met:
+! 
+! 1. Redistributions of source code must retain the above copyright notice,
+!    this list of conditions and the following disclaimer.
+! 
+! 2. Redistributions in binary form must reproduce the above copyright notice,
+!    this list of conditions and the following disclaimer in the documentation
+!    and/or other materials provided with the distribution.
+! 
+! THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
+! INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+! FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+! DEVELOPERS AND CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+! SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+! PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+! OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+! WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+IN: compiler
+USE: stack
+USE: words
+
+: compile-drop ( -- )
+    commit-literals
+    4 ESI R-I ;
+
+: compile-dup ( -- )
+    commit-literals
+    ESI EAX [R]>R
+    4 ESI R+I
+    EAX ESI R>[R] ;
+
+\ drop [ compile-drop ] "compiling" set-word-property
+\ dup  [ compile-dup ] "compiling" set-word-property
diff --git a/library/test/hsv.factor b/library/test/hsv.factor
new file mode 100644
index 0000000000..9f404815b2
--- /dev/null
+++ b/library/test/hsv.factor
@@ -0,0 +1,26 @@
+IN: scratchpad
+USE: sdl
+USE: test
+
+[ 1/2 1/2 1/2 ] [ 0 0 1/2 hsv>rgb ] unit-test
+
+[ 1/2 1/4 1/4 ] [ 0 1/2 1/2 hsv>rgb ] unit-test
+[ 1/3 2/9 2/9 ] [ 0 1/3 1/3 hsv>rgb ] unit-test
+
+[ 24/125 1/5 4/25 ] [ 1/5 1/5 1/5 hsv>rgb ] unit-test
+[ 29/180 1/6 5/36 ] [ 1/5 1/6 1/6 hsv>rgb ] unit-test
+
+[ 6/25 2/5 38/125 ] [ 2/5 2/5 2/5 hsv>rgb ] unit-test
+[ 8/25 4/5 64/125 ] [ 2/5 3/5 4/5 hsv>rgb ] unit-test
+
+[ 6/25 48/125 3/5 ] [ 3/5 3/5 3/5 hsv>rgb ] unit-test
+[ 0 0 0 ] [ 3/5 1/5 0 hsv>rgb ] unit-test
+
+[ 84/125 4/25 4/5 ] [ 4/5 4/5 4/5 hsv>rgb ] unit-test
+[ 7/15 1/3 1/2 ] [ 4/5 1/3 1/2 hsv>rgb ] unit-test
+
+[ 5/6 5/36 5/6 ] [ 5/6 5/6 5/6 hsv>rgb ] unit-test
+[ 1/6 0 1/6 ] [ 5/6 1 1/6 hsv>rgb ] unit-test
+
+[ 1 0 0 ] [ 1 1 1 hsv>rgb ] unit-test
+[ 1/6 1/9 1/9 ] [ 1 1/3 1/6 hsv>rgb ] unit-test
diff --git a/library/test/interpreter.factor b/library/test/interpreter.factor
new file mode 100644
index 0000000000..9de46bbc6b
--- /dev/null
+++ b/library/test/interpreter.factor
@@ -0,0 +1,49 @@
+IN: scratchpad
+USE: interpreter
+USE: test
+USE: namespaces
+USE: combinators
+USE: stack
+USE: math
+USE: lists
+USE: kernel
+
+[ { 1 2 3 } ] [
+    init-interpreter [ 1 2 3 ] run meta-d get
+] unit-test
+
+[ { "Yo" 2 } ] [
+    init-interpreter [ 2 >r "Yo" r> ] run meta-d get
+] unit-test
+
+[ { 2 } ] [
+    init-interpreter [ t [ 2 ] [ "hi" ] ifte ] run meta-d get
+] unit-test
+
+[ { "hi" } ] [
+    init-interpreter [ f [ 2 ] [ "hi" ] ifte ] run meta-d get
+] unit-test
+
+[ { 4 } ] [
+    init-interpreter [ 2 2 fixnum+ ] run meta-d get
+] unit-test
+
+[ { "Hey" "there" } ] [
+    init-interpreter [ [ "Hey" | "there" ] uncons ] run meta-d get
+] unit-test
+
+[ { t } ] [
+    init-interpreter [ "XYZ" "XYZ" = ] run meta-d get
+] unit-test
+
+[ { f } ] [
+    init-interpreter [ "XYZ" "XuZ" = ] run meta-d get
+] unit-test
+
+[ { #{ 1 1.5 } { } #{ 1 1.5 } { } } ] [
+    init-interpreter [ #{ 1 1.5 } { } 2dup ] run meta-d get
+] unit-test
+
+[ { 4 } ] [
+    init-interpreter [ 2 2 + ] run meta-d get
+] unit-test
diff --git a/library/test/test.factor b/library/test/test.factor
index 250afaa91b..e6225442ab 100644
--- a/library/test/test.factor
+++ b/library/test/test.factor
@@ -119,6 +119,7 @@ USE: unparser
 
         cpu "x86" = [
             [
+                "hsv" test
                 "x86-compiler/simple"
                 "x86-compiler/stack"
                 "x86-compiler/ifte"