64tass Language Support

VS Code language support for the 64tass cross assembler for the MOS 6502 family of processors.

Features

Syntax Highlighting - Full syntax highlighting for 64tass assembly including:
- Standard and undocumented 6502 opcodes
- All compiler directives
- Numbers (decimal, hex $, binary %)
- Immediate mode values (#)
- Labels and registers
- Strings and comments
Go to Definition (F12) - Navigate to label and symbol definitions
- Supports scoped labels within .proc, .block, .macro, .function, .struct, .union, and .namespace
- Works across files via .include directives
- Click on .include paths to open the included file
Find All References (Shift+F12) - Find all usages of a symbol across files
Rename Symbol (F2) - Rename a symbol and all its references
- Optionally includes occurrences in comments (shown in preview, unchecked by default)
Hover Information - View symbol values and scope information on hover
- Numeric values displayed in binary, decimal, and hexadecimal
- Shows associated comments from block definitions
Code Folding - Fold blocks like .proc/.pend, .macro/.endm, .if/.endif, etc.
Diagnostics - Real-time error detection:
- Duplicate label definitions
- Unclosed blocks
- Undefined symbols and macros

Install directly from the VS Code Marketplace or search for "64tass Language Support" in the Extensions view (Ctrl+Shift+X).

Download the latest .vsix file from Releases and install it in VS Code:

MIT