diff --git a/mpact/sim/decoder/vscode/README.md b/mpact/sim/decoder/vscode/README.md
new file mode 100644
index 0000000..6ba6a6c
--- /dev/null
+++ b/mpact/sim/decoder/vscode/README.md
@@ -0,0 +1,46 @@
+# MPACT-Sim Syntax Highlighting VS Code Extensions
+
+This directory contains two directories that provide the source code for the VS
+Code extensions that enable syntax highlighting for .isa and .bin_fmt files in
+VS Code.
+
+For the time being, they are not published in the VS Code marketplace, but have
+to be built and then manually installed in VS Code as detailed below.
+
+## Building and installing
+
+### Prerequisites
+
+Before you can build an extension, make sure you have `node/npm` and `vsce`
+installed. You should be able to install node using most package managers. Once
+node is installed you use `nvm` to install `vsce`:
+
+```
+nvm install -g @vscode/vsce
+```
+
+### Building the extension
+
+Each syntax highlighting extension is built by executing the following command
+from within the syntax highlighting extension source directory (isa/binfmt):
+
+```
+vsce package --allow-missing-repository
+```
+
+This will produce a file `vscode-mpact-sim-<name>-N.N.N.vsix` that can be
+installed in VS Code.
+
+### Installing the extension
+
+Repeat the following for each (bin_fmt and isa) extension:
+
+1.  Open VS Code
+1.  Select the *Extensions* view on the left hand side of the window.
+1.  Click on the three dots (...) in the top right corner of the Extensions
+    panel.
+1.  Select `Install from VSIX...`
+1.  Navigate to and select the `.vsix` file generated previously and click
+    `Open`.
+
+The extensions should now be installed and available.
diff --git a/mpact/sim/decoder/vscode/binfmt/CHANGELOG.md b/mpact/sim/decoder/vscode/binfmt/CHANGELOG.md
new file mode 100644
index 0000000..5b617b2
--- /dev/null
+++ b/mpact/sim/decoder/vscode/binfmt/CHANGELOG.md
@@ -0,0 +1,5 @@
+# Change Log
+
+## Version 0.0.1
+
+-   Initial release
diff --git a/mpact/sim/decoder/vscode/binfmt/LICENSE b/mpact/sim/decoder/vscode/binfmt/LICENSE
new file mode 100644
index 0000000..14c4343
--- /dev/null
+++ b/mpact/sim/decoder/vscode/binfmt/LICENSE
@@ -0,0 +1,227 @@
+
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+THE SOFTWARE.
diff --git a/mpact/sim/decoder/vscode/binfmt/README.md b/mpact/sim/decoder/vscode/binfmt/README.md
new file mode 100644
index 0000000..8e92ffc
--- /dev/null
+++ b/mpact/sim/decoder/vscode/binfmt/README.md
@@ -0,0 +1,25 @@
+# MPACT-Sim .bin_fmt Syntax Highlighting
+
+## Features
+
+This extension offers syntax highlighting of the description files used to
+generate binary format instruction decoder C++ code for MPACT-Sim
+instruction-set simulators. See https://github.com/google/mpact-sim for more
+information about syntax and how the description files are used to generate
+instruction decoder code.
+
+![IMG](https://github.com/google/mpact-sim/raw/HEAD/decoder/vscode/binfmt/images/bin_fmt.png a.png)
+
+## Known Issues
+
+None.
+
+## Release Notes
+
+### 0.0.1
+
+Initial release of syntax highlighting extension for MPACT-Sim .isa files.
+
+## For more information
+
+*   [MPACT-Sim](https://github.com/google/mpact-sim)
diff --git a/mpact/sim/decoder/vscode/binfmt/icons/icon.png b/mpact/sim/decoder/vscode/binfmt/icons/icon.png
new file mode 100644
index 0000000..d4e3148
--- /dev/null
+++ b/mpact/sim/decoder/vscode/binfmt/icons/icon.png
Binary files differ
diff --git a/mpact/sim/decoder/vscode/binfmt/images/bin_fmt.png b/mpact/sim/decoder/vscode/binfmt/images/bin_fmt.png
new file mode 100644
index 0000000..a272497
--- /dev/null
+++ b/mpact/sim/decoder/vscode/binfmt/images/bin_fmt.png
Binary files differ
diff --git a/mpact/sim/decoder/vscode/binfmt/language-configuration.json b/mpact/sim/decoder/vscode/binfmt/language-configuration.json
new file mode 100644
index 0000000..8f162a0
--- /dev/null
+++ b/mpact/sim/decoder/vscode/binfmt/language-configuration.json
@@ -0,0 +1,30 @@
+{
+    "comments": {
+        // symbol used for single line comment. Remove this entry if your language does not support line comments
+        "lineComment": "//",
+        // symbols used for start and end a block comment. Remove this entry if your language does not support block comments
+        "blockComment": [ "/*", "*/" ]
+    },
+    // symbols used as brackets
+    "brackets": [
+        ["{", "}"],
+        ["[", "]"],
+        ["(", ")"]
+    ],
+    // symbols that are auto closed when typing
+    "autoClosingPairs": [
+        ["{", "}"],
+        ["[", "]"],
+        ["(", ")"],
+        ["\"", "\""],
+        ["'", "'"]
+    ],
+    // symbols that can be used to surround a selection
+    "surroundingPairs": [
+        ["{", "}"],
+        ["[", "]"],
+        ["(", ")"],
+        ["\"", "\""],
+        ["'", "'"]
+    ]
+}
\ No newline at end of file
diff --git a/mpact/sim/decoder/vscode/binfmt/package.json b/mpact/sim/decoder/vscode/binfmt/package.json
new file mode 100644
index 0000000..f84b5c0
--- /dev/null
+++ b/mpact/sim/decoder/vscode/binfmt/package.json
@@ -0,0 +1,26 @@
+{
+  "name": "vscode-mpact-sim-binfmt",
+  "displayName": "MPACT-Sim bin_fmt",
+  "description": "Syntax highlighting for .bin_fmt files for MPACT-Sim",
+  "icon": "icons/icon.png",
+  "version": "0.0.1",
+  "engines": {
+    "vscode": "^1.86.0"
+  },
+  "categories": [
+    "Programming Languages"
+  ],
+  "contributes": {
+    "languages": [{
+      "id": "bin_fmt",
+      "aliases": ["bin_fmt", "bin_fmt"],
+      "extensions": [".bin_fmt"],
+      "configuration": "./language-configuration.json"
+    }],
+    "grammars": [{
+      "language": "bin_fmt",
+      "scopeName": "source.bin_fmt",
+      "path": "./syntaxes/bin_fmt.tmLanguage.json"
+    }]
+  }
+}
diff --git a/mpact/sim/decoder/vscode/binfmt/syntaxes/bin_fmt.tmLanguage.json b/mpact/sim/decoder/vscode/binfmt/syntaxes/bin_fmt.tmLanguage.json
new file mode 100644
index 0000000..e2de089
--- /dev/null
+++ b/mpact/sim/decoder/vscode/binfmt/syntaxes/bin_fmt.tmLanguage.json
@@ -0,0 +1,236 @@
+{
+  "name": "bin_fmt",
+  "scopeName": "source.bin_fmt",
+  "foldingStartMarker": "\\{\\s*$",
+  "foldingStopMarker": "^\\s*\\}",
+  "patterns": [
+    { "include": "#assignment" },
+    { "include": "#block_comments" },
+    { "include": "#line_comments" },
+    { "include": "#include_file" },
+    { "include": "#include_decl" },
+    { "include": "#instruction_group"},
+    { "include": "#format_decl"},
+    { "include": "#field_decl"},
+    { "include": "#overlay_decl"},
+    { "include": "#decoder"},
+    { "include": "#signed_unsigned" },
+    { "include": "#bin_number" },
+    { "include": "#constants" },
+    { "include": "#strings"},
+    { "include": "#reserved_words"},
+    { "include": "#reserved_other"}
+  ],
+  "repository": {
+    "line_comments": {
+      "name": "comment.line.double-slash.bin_fmt",
+      "begin": "//",
+      "end": "$"
+    },
+    "block_comments": {
+      "name": "comment.block.bin_fmt",
+      "begin": "/\\*",
+      "end": "\\*\\/"
+    },
+    "namespace_decl": {
+      "begin": "\\b(namespace)\\s*",
+      "end": ";",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.bin_fmt" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#namespace_list"}
+      ]
+    },
+    "namespace_list": {
+      "match": "\\b(\\w+)\\b",
+      "captures": {
+        "1": { "name": "support.class.bin_fmt" }
+      }
+    },
+    "include_decl": {
+      "begin": "\\b(includes)\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.bin_fmt" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#include_file" }
+      ]
+    },
+    "include_file": {
+      "begin": "^\\s*(#include)\\b",
+      "end": "$",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.bin_fmt" }
+      },
+      "patterns": [{ "include": "#strings" }]
+    },
+    "instruction_group": {
+      "begin": "\\b(instruction)\\s+(group)\\s+(\\w+)\\s*\\[(\\d+)\\]\\s*:\\s*(\\w+)\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.bin_fmt" },
+        "2": { "name": "keyword.control.bin_fmt" },
+        "3": { "name": "constant.numeric.bin_fmt" },
+        "4": { "name": "support.class.bin_fmt" },
+        "5": { "name": "support.class.bin_fmt"}
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#instruction" }
+      ]
+    },
+    "signed_unsigned": {
+      "match": "\\b(signed|unsigned)\\b",
+      "name": "support.type.bin_fmt"
+    },
+    "field_decl": {
+      "match": "\\b(signed|unsigned)\\s+(\\w+)\\s*\\[(\\d+)\\]\\s*;",
+      "captures": {
+        "1": { "name": "support.type.bin_fmt"},
+        "2": { "name": "variable.other.bin_fmt"},
+        "3": { "name": "constant.numeric.bin_fmt"}
+      }
+    },
+    "overlay_decl": {
+      "begin": "\\b(signed|unsigned)\\s+(\\w+)\\s*\\[(\\d+)\\]\\s*=",
+      "end": ";",
+      "beginCaptures": {
+        "1": { "name": "support.type.bin_fmt"},
+        "2": { "name": "variable.other.bin_fmt"},
+        "3": { "name": "constant.numeric.bin_fmt"}
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#array_ref"},
+        { "include": "#identifier"},
+        { "include": "#bin_number"},
+        { "include": "#constants"}
+      ]
+    },
+    "format_decl": {
+      "begin": "\\b(format)\\s+(\\w+)\\s*\\[(\\d+)\\]\\s*:?",
+      "end": "{",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.bin_fmt"},
+        "2": { "name": "support.class.bin_fmt"},
+        "3": { "name": "constant.numeric.bin_fmt"}
+      },
+      "patterns": [
+        { "include": "#format_name"}
+      ]
+    },
+    "instruction": {
+      "begin": "\\b(\\w+)\\s*:\\s*(\\w+)\\s*:",
+      "end": ";",
+      "beginCaptures": {
+        "1" : { "name": "support.function.bin_fmt"},
+        "2" : { "name": "support.class.bin_fmt"}
+      },
+      "patterns": [
+        { "include": "#identifier"},
+        { "include": "#array_ref"},
+        { "include": "#bin_number"},
+        { "include": "#constants"}
+      ]
+    },
+    "decoder": {
+      "begin": "\\b(decoder)\\s+(\\w+)\\s+{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.bin_fmt"},
+        "2": { "name": "support.class.bin_fmt"}
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#namespace_decl" },
+        { "include": "#include_decl" },
+        { "include": "#opcode_enum"},
+        { "include": "#format_list"},
+        { "include": "#format_name"}
+      ]
+    },
+    "opcode_enum": {
+      "begin": "\\b(opcode_enum)\\s*=\\s*",
+      "end": ";",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.bin_fmt"}
+      },
+      "patterns": [
+        {"include": "#strings"}
+      ]
+    },
+    "reserved_words": {
+      "match": "\\b(format|fields|overlays|includes|instruction|group|decoder|opcode_enum)\\b",
+      "name": "keyword.control.bin_fmt"
+    },
+    "reserved_other": {
+      "match": "\\b(includes)\\b",
+      "name": "keyword.other.bin_fmt"
+    },
+    "brackets": {
+      "name": "brackets.bin_fmt",
+      "match": "[\\{\\}\\(\\)\\[\\]]"
+    },
+    "bin_number": {
+      "match": "\\b0b[01]+(\\'?[01])*\\b",
+      "name": "constant.numeric.bin_fmt"
+    },
+    "constants": {
+      "name": "constant.numeric.bin_fmt",
+      "match": "\\b\\d+\\b"
+    },
+    "array_ref": {
+      "begin": "\\b(\\w+)\\s*\\[",
+      "end": "\\]",
+      "beginCaptures": {
+        "1": { "name": "variable.other.bin_fmt"}
+      },
+      "patterns": [
+        { "include": "#range"},
+        { "include": "#bin_number"},
+        { "include": "#constants"}
+      ]
+    },
+    "range": {
+      "match": "\\b(\\d+)\\.\\.(\\d+)\\b",
+      "captures": {
+        "1": { "name": "constant.numeric.bin_fmt"},
+        "2": { "name": "constant.numeric.bin_fmt"}
+      }
+    },
+    "identifier": {
+      "match": "\\b([a-zA-Z_][a-zA-Z_0-9]*)\\b",
+      "name": "variable.other.bin_fmt"
+    },
+    "format_list": {
+      "begin": "\\b([a-zA-Z_][a-zA-Z_0-9]*)\\s*=\\s*{",
+      "end": "}\\s*;",
+      "beginCaptures" : {
+        "1": { "name": "support.class.bin_fmt"}
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#format_name"}
+      ]
+    },
+    "format_name": {
+      "match": "\\b([a-zA-Z_][a-zA-Z_0-9]*)\\b",
+      "name": "support.class.bin_fmt"
+    },
+    "strings": {
+      "name": "string.quoted.double.bin_fmt",
+      "begin": "\"",
+      "end": "\""
+    }
+  }
+}
diff --git a/mpact/sim/decoder/vscode/isa/CHANGELOG.md b/mpact/sim/decoder/vscode/isa/CHANGELOG.md
new file mode 100644
index 0000000..5b617b2
--- /dev/null
+++ b/mpact/sim/decoder/vscode/isa/CHANGELOG.md
@@ -0,0 +1,5 @@
+# Change Log
+
+## Version 0.0.1
+
+-   Initial release
diff --git a/mpact/sim/decoder/vscode/isa/LICENSE b/mpact/sim/decoder/vscode/isa/LICENSE
new file mode 100644
index 0000000..14c4343
--- /dev/null
+++ b/mpact/sim/decoder/vscode/isa/LICENSE
@@ -0,0 +1,227 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
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+      the terms of any separate license agreement you may have executed
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+
+   6. Trademarks. This License does not grant permission to use the trade
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+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      PARTICULAR PURPOSE. You are solely responsible for determining the
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+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
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+
+      To apply the Apache License to your work, attach the following
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+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
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+The files in util/renode/renode_cs subdirectory were derived from files
+copyrighted by AntMicro under the MIT License and are therefore covered by it.
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+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/mpact/sim/decoder/vscode/isa/README.md b/mpact/sim/decoder/vscode/isa/README.md
new file mode 100644
index 0000000..875ded4
--- /dev/null
+++ b/mpact/sim/decoder/vscode/isa/README.md
@@ -0,0 +1,25 @@
+# MPACT-Sim .isa Syntax Highlighting
+
+## Features
+
+This extension offers syntax highlighting of the description files used to
+generate ISA (representation independent) instruction decoder C++ code for
+MPACT-Sim instruction-set simulators. See https://github.com/google/mpact-sim
+for more information about syntax and how the description files are used to
+generate instruction decoder code.
+
+![IMG](https://github.com/google/mpact-sim/raw/HEAD/decoder/vscode/isa/images/isa.png)
+
+## Known Issues
+
+None.
+
+## Release Notes
+
+### 0.0.1
+
+Initial release of syntax highlighting extension for MPACT-Sim .isa files.
+
+## For more information
+
+*   [MPACT-Sim](https://github.com/google/mpact-sim)
diff --git a/mpact/sim/decoder/vscode/isa/icons/icon.png b/mpact/sim/decoder/vscode/isa/icons/icon.png
new file mode 100644
index 0000000..0cf6b32
--- /dev/null
+++ b/mpact/sim/decoder/vscode/isa/icons/icon.png
Binary files differ
diff --git a/mpact/sim/decoder/vscode/isa/images/isa.png b/mpact/sim/decoder/vscode/isa/images/isa.png
new file mode 100644
index 0000000..8146c6c
--- /dev/null
+++ b/mpact/sim/decoder/vscode/isa/images/isa.png
Binary files differ
diff --git a/mpact/sim/decoder/vscode/isa/language-configuration.json b/mpact/sim/decoder/vscode/isa/language-configuration.json
new file mode 100644
index 0000000..8f162a0
--- /dev/null
+++ b/mpact/sim/decoder/vscode/isa/language-configuration.json
@@ -0,0 +1,30 @@
+{
+    "comments": {
+        // symbol used for single line comment. Remove this entry if your language does not support line comments
+        "lineComment": "//",
+        // symbols used for start and end a block comment. Remove this entry if your language does not support block comments
+        "blockComment": [ "/*", "*/" ]
+    },
+    // symbols used as brackets
+    "brackets": [
+        ["{", "}"],
+        ["[", "]"],
+        ["(", ")"]
+    ],
+    // symbols that are auto closed when typing
+    "autoClosingPairs": [
+        ["{", "}"],
+        ["[", "]"],
+        ["(", ")"],
+        ["\"", "\""],
+        ["'", "'"]
+    ],
+    // symbols that can be used to surround a selection
+    "surroundingPairs": [
+        ["{", "}"],
+        ["[", "]"],
+        ["(", ")"],
+        ["\"", "\""],
+        ["'", "'"]
+    ]
+}
\ No newline at end of file
diff --git a/mpact/sim/decoder/vscode/isa/package.json b/mpact/sim/decoder/vscode/isa/package.json
new file mode 100644
index 0000000..a9ae057
--- /dev/null
+++ b/mpact/sim/decoder/vscode/isa/package.json
@@ -0,0 +1,26 @@
+{
+  "name": "vscode-mpact-sim-isa",
+  "displayName": "MPACT-Sim isa",
+  "description": "Syntax highlighting for .isa files for MPACT-Sim",
+  "icon": "icons/icon.png",
+  "version": "0.0.1",
+  "engines": {
+    "vscode": "^1.86.0"
+  },
+  "categories": [
+    "Programming Languages"
+  ],
+  "contributes": {
+    "languages": [{
+      "id": "isa",
+      "aliases": ["isa", "isa"],
+      "extensions": [".isa"],
+      "configuration": "./language-configuration.json"
+    }],
+    "grammars": [{
+      "language": "isa",
+      "scopeName": "source.isa",
+      "path": "./syntaxes/isa.tmLanguage.json"
+    }]
+  }
+}
diff --git a/mpact/sim/decoder/vscode/isa/syntaxes/isa.tmLanguage.json b/mpact/sim/decoder/vscode/isa/syntaxes/isa.tmLanguage.json
new file mode 100644
index 0000000..0038345
--- /dev/null
+++ b/mpact/sim/decoder/vscode/isa/syntaxes/isa.tmLanguage.json
@@ -0,0 +1,410 @@
+{
+  "name": "isa",
+  "scopeName": "source.isa",
+  "foldingStartMarker": "\\{\\s*$",
+  "foldingStopMarker": "^\\s*\\}",
+  "patterns": [
+    { "include": "#line_comments" },
+    { "include": "#block_comments" },
+    { "include": "#assignment" },
+    { "include": "#include_decl"},
+    { "include": "#include_file" },
+    { "include": "#isa_decl" },
+    { "include": "#template" },
+    { "include": "#bundle_decl" },
+    { "include": "#slot_decl" },
+    { "include": "#disasm_width" },
+    { "include": "#constants" }
+  ],
+  "repository": {
+    "line_comments": {
+      "name": "comment.line.double-slash.isa",
+      "begin": "//",
+      "end": "$"
+    },
+    "block_comments": {
+      "name": "comment.block.isa",
+      "begin": "/\\*",
+      "end": "\\*\\/"
+    },
+    "include_decl": {
+      "begin": "\\b(includes)\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#include_file" }
+      ]
+    },
+    "include_file": {
+      "begin": "^\\s*(#include)\\b",
+      "end": "$",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.isa" }
+      },
+      "patterns": [{ "include": "#strings" }]
+    },
+    "disasm_width": {
+      "begin": "\\b(disasm\\s+widths)\\b",
+      "end": ";",
+      "beginCaptures": {
+        "1": {"name": "variable.language.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#constants"}
+      ]
+    },
+    "template": {
+      "begin": "\\b(template)\\s*<",
+      "end": ">",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#template_param" }
+      ]
+    },
+    "template_param": {
+      "match": "\\b(int)\\s+(\\w+)\\b",
+      "captures": {
+        "1": { "name": "support.type.isa" },
+        "2": { "name": "variable.parameter.isa" }
+      }
+    },
+    "isa_decl": {
+      "begin": "\\b(isa)\\b\\s*(\\w+)\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.isa" },
+        "2": { "name": "support.class.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#namespace_decl" },
+        { "include": "#bundle_list" },
+        { "include": "#slot_list" }
+      ]
+    },
+    "bundle_list": {
+      "begin": "\\b(bundles)\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#bundle_slot_ident" }
+      ]
+    },
+    "slot_list": {
+      "begin": "\\b(slots)\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#array_spec" },
+        { "include": "#bundle_slot_ident" }
+      ]
+    },
+    "array_spec": {
+      "begin": "\\[",
+      "end": "\\]",
+      "patterns": [{ "include": "#expression" }]
+    },
+    "bundle_slot_ident": {
+      "match": "\\b([a-zA-Z_][a-zA-Z_0-9]*)\\b",
+      "name": "support.class.isa"
+    },
+    "bundle_decl": {
+      "begin": "\\b(bundle)\\s+(\\w+)\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" },
+        "2": { "name": "support.class.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#bundle_list" },
+        { "include": "#slot_list" }
+      ]
+    },
+    "slot_decl": {
+      "begin": "\\b(slot)\\b",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#include_decl" },
+        { "include": "#default_latency" },
+        { "include": "#default_size" },
+        { "include": "#default_opcode" },
+        { "include": "#default_attributes" },
+        { "include": "#assignment" },
+        { "include": "#opcodes_decl" },
+        { "include": "#resources_assign" },
+        { "include": "#slot_header" }
+      ]
+    },
+    "slot_header": {
+      "begin": "\\b(\\w+)\\b",
+      "end": "{",
+      "captures": {
+        "1": { "name": "support.class.isa" }
+      },
+      "patterns": [
+        { "include": "#slot_template_use" },
+        { "include": "#slot_name" }
+      ]
+    },
+    "slot_template_use": {
+      "begin": "\\b(\\w+)\\s*<",
+      "end": ">",
+      "beginCaptures": {
+        "1": { "name": "support.class.isa" }
+      },
+      "patterns": [{ "include": "#assignment" }]
+    },
+    "slot_name": {
+      "match": "\\b(\\w+)\\b",
+      "name": "support.class.isa"
+    },
+    "assignment": {
+      "begin": "\\b(int)\\s+(\\w+)\\s*=",
+      "end": ";",
+      "beginCaptures": {
+        "1": { "name": "support.type.isa" },
+        "2": { "name": "variable.other.isa" }
+      },
+      "patterns": [{ "include": "#expression" }]
+    },
+    "semfunc_decl": {
+      "match": "\\b(semfunc)\\s*:\\s*(\".*\")",
+      "captures": {
+        "1": { "name": "keyword.other.isa" },
+        "2": { "name": "string.quoted.double.isa" }
+      }
+    },
+    "disasm_decl": {
+      "match": "\\b(disasm)\\s*:\\s*(\".*\")",
+      "captures": {
+        "1": { "name": "keyword.other.isa" },
+        "2": { "name": "string.quoted.double.isa" }
+      }
+    },
+    "resources_decl_name": {
+      "match": "\\b(resources)\\s*:\\s*(\\w+)",
+      "captures": {
+        "1": { "name": "keyword.other.isa" },
+        "2": { "name": "variable.other.isa" }
+      }
+    },
+    "resources_decl": {
+      "begin": "\\b(resources)\\s*:\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" }
+      },
+      "patterns": [{ "include": "#dest_range" }, { "include": "#parameter" }]
+    },
+    "resources_assign": {
+      "begin": "\\b(resources)\\s*(\\w+)\\s*=\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" },
+        "2": { "name": "variable.other.isa" }
+      },
+      "patterns": [{ "include": "#dest_range" }, { "include": "#parameter" }]
+    },
+    "dest_parameter": {
+      "begin": "\\b([a-zA-Z_]\\w*)\\s*\\(",
+      "end": "\\)",
+      "beginCaptures": {
+        "1": { "name": "variable.parameter.isa" }
+      },
+      "patterns": [{ "include": "#expression" }]
+    },
+    "dest_range": {
+      "begin": "\\b([a-zA-Z_]\\w*)\\s*\\[",
+      "end": "\\]",
+      "beginCaptures": {
+        "1": { "name": "variable.parameter.isa" }
+      },
+      "patterns": [{ "include": "#expression" }]
+    },
+    "parameter": {
+      "match": "\\b([a-zA-Z_]\\w*)\\b",
+      "name": "variable.parameter.isa"
+    },
+    "default_size": {
+      "begin": "\\b(default)\\s+(size)\\s*=",
+      "end": ";",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" },
+        "2": { "name": "variable.language.isa" }
+      },
+      "patterns": [{ "include": "#expression" }]
+    },
+    "default_latency": {
+      "begin": "\\b(default)\\s+(latency)\\s*=",
+      "end": ";",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" },
+        "2": { "name": "variable.language.isa" }
+      },
+      "patterns": [{ "include": "#expression" }]
+    },
+    "default_opcode": {
+      "begin": "\\b(default)\\s+(opcode)\\s*=",
+      "end": ";",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" },
+        "2": { "name": "variable.language.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#semfunc_decl" },
+        { "include": "#disasm_decl" },
+        { "include": "#resources_decl_name" },
+        { "include": "#resources_decl" },
+        { "include": "#strings" }
+      ]
+    },
+    "default_attributes": {
+      "begin": "\\b(default)\\s+(attributes)\\s*=",
+      "end": ";",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" },
+        "2": { "name": "variable.language.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#parameter" },
+        { "include": "#assignment" }
+      ]
+    },
+    "opcode_decl": {
+      "begin": "\\b(\\w+)\\{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "support.function.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#dest_parameter" },
+        { "include": "#parameter" }
+      ]
+    },
+    "opcode_delete": {
+      "match": "\\b(\\w+)\\s*=\\s*(delete)\\b",
+      "captures": {
+        "1": { "name": "support.function.isa" },
+        "2": { "name": "keyword.other.isa" }
+      }
+    },
+    "opcode_override": {
+      "match": "\\b(\\w+)\\s*=\\s*(override)\\b",
+      "captures": {
+        "1": { "name": "support.function.isa" },
+        "2": { "name": "keyword.other.isa" }
+      }
+    },
+    "opcodes_decl": {
+      "begin": "\\b(opcodes)\\s*{\\s*",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.control.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#semfunc_decl" },
+        { "include": "#disasm_decl" },
+        { "include": "#attribute_decl" },
+        { "include": "#resources_decl_name" },
+        { "include": "#resources_decl" },
+        { "include": "#opcode_decl" },
+        { "include": "#opcode_delete" },
+        { "include": "#opcode_override" },
+        { "include": "#strings" }
+      ]
+    },
+    "attribute_decl": {
+      "begin": "\\b(attributes)\\s*:\\s*{",
+      "end": "}",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#parameter" },
+        { "include": "#assignment" }
+      ]
+    },
+    "namespace_decl": {
+      "begin": "\\b(namespace)\\s*",
+      "end": ";",
+      "beginCaptures": {
+        "1": { "name": "keyword.other.isa" }
+      },
+      "patterns": [
+        { "include": "#line_comments" },
+        { "include": "#block_comments" },
+        { "include": "#namespace_list"}
+      ]
+    },
+    "namespace_list": {
+      "match": "\\b(\\w+)\\b",
+      "captures": {
+        "1": { "name": "support.class.isa" }
+      }
+    },
+    "brackets": {
+      "name": "brackets.isa",
+      "match": "[\\{\\}\\(\\)\\[\\]]"
+    },
+    "strings": {
+      "name": "string.quoted.double.isa",
+      "begin": "\"",
+      "end": "\""
+    },
+    "constants": {
+      "name": "constant.numeric.isa",
+      "match": "\\b\\d+\\b"
+    },
+    "expression": {
+      "patterns": [
+        { "include": "#operators" },
+        { "include": "#constants" },
+        { "include": "#identifier" }
+      ]
+    },
+    "identifier": {
+      "match": "\\b([a-zA-Z_][a-zA-Z_0-9]*)\\b",
+      "name": "variable.other.isa"
+    },
+    "operators": {
+      "match": "\\b(\\+|-|\\*|/|\\.\\.)\\b",
+      "name": "keyword.operator.isa"
+    }
+  }
+}