updated for version 7.0001
diff --git a/runtime/syntax/mmix.vim b/runtime/syntax/mmix.vim
new file mode 100644
index 0000000..5b6a443
--- /dev/null
+++ b/runtime/syntax/mmix.vim
@@ -0,0 +1,162 @@
+" Vim syntax file
+" Language: MMIX
+" Maintainer: Dirk Hüsken, <huesken@informatik.uni-tuebingen.de>
+" Last Change: Wed Apr 24 01:18:52 CEST 2002
+" Filenames: *.mms
+" URL: http://homepages.uni-tuebingen.de/student/dirk.huesken/vim/syntax/mmix.vim
+
+" Limitations: Comments must start with either % or //
+" (preferrably %, Knuth-Style)
+
+if version < 600
+ syntax clear
+elseif exists("b:current_syntax")
+ finish
+endif
+
+syn case ignore
+
+" MMIX data types
+syn keyword mmixType byte wyde tetra octa
+
+" different literals...
+syn match decNumber "[0-9]*"
+syn match octNumber "0[0-7][0-7]\+"
+syn match hexNumber "#[0-9a-fA-F]\+"
+syn region mmixString start=+"+ skip=+\\"+ end=+"+
+syn match mmixChar "'.'"
+
+" ...and more special MMIX stuff
+syn match mmixAt "@"
+syn keyword mmixSegments Data_Segment Pool_Segment Stack_Segment
+
+syn match mmixIdentifier "[a-z_][a-z0-9_]*"
+
+" labels (for branches etc)
+syn match mmixLabel "^[a-z0-9_:][a-z0-9_]*"
+syn match mmixLabel "[0-9][HBF]"
+
+" pseudo-operations
+syn keyword mmixPseudo is loc greg
+
+" comments
+syn match mmixComment "%.*"
+syn match mmixComment "//.*"
+syn match mmixComment "^\*.*"
+
+
+syn keyword mmixOpcode trap fcmp fun feql fadd fix fsub fixu
+syn keyword mmixOpcode fmul fcmpe fune feqle fdiv fsqrt frem fint
+
+syn keyword mmixOpcode floti flotui sfloti sflotui i
+syn keyword mmixOpcode muli mului divi divui
+syn keyword mmixOpcode addi addui subi subui
+syn keyword mmixOpcode 2addui 4addui 8addui 16addui
+syn keyword mmixOpcode cmpi cmpui negi negui
+syn keyword mmixOpcode sli slui sri srui
+syn keyword mmixOpcode bnb bzb bpb bodb
+syn keyword mmixOpcode bnnb bnzb bnpb bevb
+syn keyword mmixOpcode pbnb pbzb pbpb pbodb
+syn keyword mmixOpcode pbnnb pbnzb pbnpb pbevb
+syn keyword mmixOpcode csni cszi cspi csodi
+syn keyword mmixOpcode csnni csnzi csnpi csevi
+syn keyword mmixOpcode zsni zszi zspi zsodi
+syn keyword mmixOpcode zsnni zsnzi zsnpi zsevi
+syn keyword mmixOpcode ldbi ldbui ldwi ldwui
+syn keyword mmixOpcode ldti ldtui ldoi ldoui
+syn keyword mmixOpcode ldsfi ldhti cswapi ldunci
+syn keyword mmixOpcode ldvtsi preldi pregoi goi
+syn keyword mmixOpcode stbi stbui stwi stwui
+syn keyword mmixOpcode stti sttui stoi stoui
+syn keyword mmixOpcode stsfi sthti stcoi stunci
+syn keyword mmixOpcode syncdi presti syncidi pushgoi
+syn keyword mmixOpcode ori orni nori xori
+syn keyword mmixOpcode andi andni nandi nxori
+syn keyword mmixOpcode bdifi wdifi tdifi odifi
+syn keyword mmixOpcode muxi saddi mori mxori
+syn keyword mmixOpcode muli mului divi divui
+
+syn keyword mmixOpcode flot flotu sflot sflotu
+syn keyword mmixOpcode mul mulu div divu
+syn keyword mmixOpcode add addu sub subu
+syn keyword mmixOpcode 2addu 4addu 8addu 16addu
+syn keyword mmixOpcode cmp cmpu neg negu
+syn keyword mmixOpcode sl slu sr sru
+syn keyword mmixOpcode bn bz bp bod
+syn keyword mmixOpcode bnn bnz bnp bev
+syn keyword mmixOpcode pbn pbz pbp pbod
+syn keyword mmixOpcode pbnn pbnz pbnp pbev
+syn keyword mmixOpcode csn csz csp csod
+syn keyword mmixOpcode csnn csnz csnp csev
+syn keyword mmixOpcode zsn zsz zsp zsod
+syn keyword mmixOpcode zsnn zsnz zsnp zsev
+syn keyword mmixOpcode ldb ldbu ldw ldwu
+syn keyword mmixOpcode ldt ldtu ldo ldou
+syn keyword mmixOpcode ldsf ldht cswap ldunc
+syn keyword mmixOpcode ldvts preld prego go
+syn keyword mmixOpcode stb stbu stw stwu
+syn keyword mmixOpcode stt sttu sto stou
+syn keyword mmixOpcode stsf stht stco stunc
+syn keyword mmixOpcode syncd prest syncid pushgo
+syn keyword mmixOpcode or orn nor xor
+syn keyword mmixOpcode and andn nand nxor
+syn keyword mmixOpcode bdif wdif tdif odif
+syn keyword mmixOpcode mux sadd mor mxor
+
+syn keyword mmixOpcode seth setmh setml setl inch incmh incml incl
+syn keyword mmixOpcode orh ormh orml orl andh andmh andml andnl
+syn keyword mmixOpcode jmp pushj geta put
+syn keyword mmixOpcode pop resume save unsave sync swym get trip
+syn keyword mmixOpcode set lda
+
+" switch back to being case sensitive
+syn case match
+
+" general-purpose and special-purpose registers
+syn match mmixRegister "$[0-9]*"
+syn match mmixRegister "r[A-Z]"
+syn keyword mmixRegister rBB rTT rWW rXX rYY rZZ
+
+" 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_mmix_syntax_inits")
+ if version < 508
+ let did_mmix_syntax_inits = 1
+ command -nargs=+ HiLink hi link <args>
+ else
+ command -nargs=+ HiLink hi def link <args>
+ endif
+
+ " The default methods for highlighting. Can be overridden later
+ HiLink mmixAt Type
+ HiLink mmixPseudo Type
+ HiLink mmixRegister Special
+ HiLink mmixSegments Type
+
+ HiLink mmixLabel Special
+ HiLink mmixComment Comment
+ HiLink mmixOpcode Keyword
+
+ HiLink hexNumber Number
+ HiLink decNumber Number
+ HiLink octNumber Number
+
+ HiLink mmixString String
+ HiLink mmixChar String
+
+ HiLink mmixType Type
+ HiLink mmixIdentifier Normal
+ HiLink mmixSpecialComment Comment
+
+ " My default color overrides:
+ " hi mmixSpecialComment ctermfg=red
+ "hi mmixLabel ctermfg=lightcyan
+ " hi mmixType ctermbg=black ctermfg=brown
+
+ delcommand HiLink
+endif
+
+let b:current_syntax = "mmix"
+
+" vim: ts=8