diff --git a/runtime/syntax/asmh8300.vim b/runtime/syntax/asmh8300.vim
new file mode 100644
index 0000000..48699d8
--- /dev/null
+++ b/runtime/syntax/asmh8300.vim
@@ -0,0 +1,85 @@
+" Vim syntax file
+" Language:	Hitachi H-8300h specific syntax for GNU Assembler
+" Maintainer:	Kevin Dahlhausen <kdahlhaus@yahoo.com>
+" Last Change:	2002 Sep 19
+
+" 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
+
+syn case ignore
+
+syn match asmDirective "\.h8300[h]*"
+
+"h8300[h] registers
+syn match asmReg	"e\=r[0-7][lh]\="
+
+"h8300[h] opcodes - order is important!
+syn match asmOpcode "add\.[lbw]"
+syn match asmOpcode "add[sx :]"
+syn match asmOpcode "and\.[lbw]"
+syn match asmOpcode "bl[deots]"
+syn match asmOpcode "cmp\.[lbw]"
+syn match asmOpcode "dec\.[lbw]"
+syn match asmOpcode "divx[us].[bw]"
+syn match asmOpcode "ext[su]\.[lw]"
+syn match asmOpcode "inc\.[lw]"
+syn match asmOpcode "mov\.[lbw]"
+syn match asmOpcode "mulx[su]\.[bw]"
+syn match asmOpcode "neg\.[lbw]"
+syn match asmOpcode "not\.[lbw]"
+syn match asmOpcode "or\.[lbw]"
+syn match asmOpcode "pop\.[wl]"
+syn match asmOpcode "push\.[wl]"
+syn match asmOpcode "rotx\=[lr]\.[lbw]"
+syn match asmOpcode "sha[lr]\.[lbw]"
+syn match asmOpcode "shl[lr]\.[lbw]"
+syn match asmOpcode "sub\.[lbw]"
+syn match asmOpcode "xor\.[lbw]"
+syn keyword asmOpcode "andc" "band" "bcc" "bclr" "bcs" "beq" "bf" "bge" "bgt"
+syn keyword asmOpcode "bhi" "bhs" "biand" "bild" "bior" "bist" "bixor" "bmi"
+syn keyword asmOpcode "bne" "bnot" "bnp" "bor" "bpl" "bpt" "bra" "brn" "bset"
+syn keyword asmOpcode "bsr" "btst" "bst" "bt" "bvc" "bvs" "bxor" "cmp" "daa"
+syn keyword asmOpcode "das" "eepmov" "eepmovw" "inc" "jmp" "jsr" "ldc" "movfpe"
+syn keyword asmOpcode "movtpe" "mov" "nop" "orc" "rte" "rts" "sleep" "stc"
+syn keyword asmOpcode "sub" "trapa" "xorc"
+
+syn case match
+
+
+" Read the general asm syntax
+if version < 600
+  source <sfile>:p:h/asm.vim
+else
+  runtime! syntax/asm.vim
+endif
+
+
+" 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_hitachi_syntax_inits")
+  if version < 508
+    let did_hitachi_syntax_inits = 1
+    command -nargs=+ HiLink hi link <args>
+  else
+    command -nargs=+ HiLink hi def link <args>
+  endif
+
+  HiLink asmOpcode  Statement
+  HiLink asmRegister  Identifier
+
+  " My default-color overrides:
+  "hi asmOpcode ctermfg=yellow
+  "hi asmReg	ctermfg=lightmagenta
+
+  delcommand HiLink
+endif
+
+let b:current_syntax = "asmh8300"
+
+" vim: ts=8