diff --git a/runtime/syntax/cynpp.vim b/runtime/syntax/cynpp.vim
new file mode 100644
index 0000000..b984bac
--- /dev/null
+++ b/runtime/syntax/cynpp.vim
@@ -0,0 +1,68 @@
+" Vim syntax file
+" Language:     Cyn++
+" Maintainer:   Phil Derrick <phild@forteds.com>
+" Last change:  2001 Sep 02
+"
+" Language Information
+"
+"		Cynpp (Cyn++) is a macro language to ease coding in Cynlib.
+"		Cynlib is a library of C++ classes to allow hardware
+"		modelling in C++. Combined with a simulation kernel,
+"		the compiled and linked executable forms a hardware
+"		simulation of the described design.
+"
+"		Cyn++ is designed to be HDL-like.
+"
+"		Further information can be found from www.forteds.com
+
+
+
+
+
+" Remove any old syntax stuff hanging around
+" For version 5.x: Clear all syntax items
+" For version 6.x: Quit when a syntax file was already loaded
+if version < 600
+  syntax clear
+elseif exists("b:current_syntax")
+  finish
+endif
+
+" Read the Cynlib syntax to start with - this includes the C++ syntax
+if version < 600
+  source <sfile>:p:h/cynlib.vim
+else
+  runtime! syntax/cynlib.vim
+endif
+unlet b:current_syntax
+
+
+
+" Cyn++ extensions
+
+syn keyword     cynppMacro      Always EndAlways
+syn keyword     cynppMacro      Module EndModule
+syn keyword     cynppMacro      Initial EndInitial
+syn keyword     cynppMacro      Posedge Negedge Changed
+syn keyword     cynppMacro      At
+syn keyword     cynppMacro      Thread EndThread
+syn keyword     cynppMacro      Instantiate
+
+" Define the default highlighting.
+" For version 5.7 and earlier: only when not done already
+" For version 5.8 and later: only when an item doesn't have highlighting yet
+if version >= 508 || !exists("did_cynpp_syntax_inits")
+  if version < 508
+    let did_cynpp_syntax_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+  HiLink cLabel		Label
+  HiLink cynppMacro  Statement
+
+  delcommand HiLink
+endif
+
+let b:current_syntax = "cynpp"