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Jack of all trades, master of C*Base

Tools for Commodore 64 BASIC v2 cross-development, part of the C*Base Larry Mod v3.1 package.

C*Base PETSCII Viewer 1

C*Base PETSCII Viewer renders Commodore 64 BBS sequence files directly in VS Code. Uses the embedded C64 character ROM for pixel-accurate bitmap output — no font installation required. Activates automatically when opening .seq or .petmate files.

Features

  • C64 bitmap rendering via embedded character ROM (no anti-aliasing)
  • Full 16-color C64 palette with six presets (CGTerm, Colodore, PALette, Pepto, Petmate, VICE)
  • Charset auto-detection — .seq from file bytes; .petmate per page
  • MCI command display toggle (£-commands and @:-commands)
  • CLS ($93) break indicator — fluorescent green dotted line (.seq only)
  • Drag-to-resize column width, 20–200 columns (.seq only)
  • .petmate multi-page viewer with page navigation

C*Base PETSCII Viewer documentation | GitHub repository

BPP+ Preprocessor 2

BPP+ adds labels, scopes, and file includes to Commodore 64 BASIC v2. Write code with symbolic names instead of line numbers, organize code in scoped blocks, and split projects into multiple files. The preprocessor converts this enhanced syntax into standard BASIC v2.

Features

  • Labels instead of line numbers (main: instead of 100)
  • Scopes for organizing code (screen: { init: ... })
  • File includes (!include source "lib/screen.bpp")
  • Statement chaining with backslash (\)
  • Hex ($ff) and binary (%11111111) number formats
  • Semicolon (;) comments alongside rem

BPP+ Preprocessor documentation | GitHub repository

BPP+ Syntax Highlighting 1

Syntax highlighting and code snippets for standard BASIC v2 and the BPP+ preprocessor.

Features

  • Syntax highlighting for all BASIC v2 keywords, functions, and operators
  • BPP+ feature highlighting (labels, scopes, includes, statement chaining)
  • 100+ code snippets for commands, functions, and PETSCII control characters
  • Works with .bas and .bpp files

BPP+ Syntax Highlighting documentation | GitHub repository

  1. For Visual Studio Code ↩↩

  2. Extended from the original BPP preprocessor by Henning Liebenau. ↩