Arthur Jordison has released version 4.1.0 of his Cbm .prg Studio software. Per Authur this is “More of a bug-fix really but there are some minor new features. As usual, a huge thank you to OldSkoolCoder, Stuart Hurst, and the wider Commodore community for their continued support of this project.”

What Is It?

CBM prg Studio is a Windows IDE that allows you to type a BASIC or machine code program and convert it to a ‘.prg’ file, which you can run in an emulator or on real hardware. It includes character, sprite, screen editors, and a fully featured 6510/65816 debugger.

The following machines can be developed for:

  • Commodore 64 (and SuperCPU),
  • Commodore 128,
  • Commodore VIC 20,
  • Commodore 16,
  • Commodore Plus/4,
  • Commodore PET BASIC 2 machines, e.g. PET 2001,
  • Commodore PET BASIC 4 machines, e.g. PET 4000/9000,
  • Mega65,
  • Can also be used with the Kick Assembler.

Follow the download link for more details.


  • Kick Assembler support,
  • Mega65/BASIC65 support,
  • Git Integration,
  • 6502/6510/65816 Assembler/disassembler/Integrated Debugger,
  • Sprite editor,
  • Character editor,
  • Screen Designer,
  • SID tool,
  • A Screen Code Builder, for using those pesky print control characters,
  • Memory Viewer,
  • Binary file import/export,
  • Program import (.prg, .T64 or .D64/.D71/.D81),
  • Program export (.prg, .p00),
  • .D64/.D71/.D81 Creation Tool,
  • BASIC Constants,
  • Code formatting and renumbering,
  • Automatic assembly code formatting,
  • Multiple source files (assembly or BASIC) can be build to one destination,
  • Tabbed MDI interface,
  • Comprehensive help, including tutorials,
  • Plus many others.
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