C64 Studio is a .NET based IDE.

The program supports project based C64 assembly or Basic V2. The internal assembler is using the ACME syntax.

In connection with Vice the IDE allows you to debug through your code and watch variables/memory locations, registers and memory.
Any other emulator can be set up as well if it's startable via runtime arguments.

C64 Studio allows you to compile to raw binary, .prg, .t64, .d64 or cartridge format (.bin and .crt for 8k, 16k, MagicDesk)

Additionally to this C64 Studio comes with a charset, sprite and media editor (tape and disk).

An encompassing help documentation is part of the program.

Fix: Let Black Jack for CBM Prg Studio compile (allow * counter for macros)
Fix: Up text length for binary editor import
Fix: Crash in Charset screen editor when floating selection was placed outside the screen
Fix: Add missing extension to C64Ass.exe (ouch!)
Fix: BASIC shifted characters A-Z, properly place in PETSCII range
Fix: Speedup of symbol transfer after full assembly
Fix: Remove selection borders in char screen after changing mode
Fix BASIC line length check warning
Fix: initial break point set via project properties is not temporary
Add: Macro File, RunFile
Fix: Remove 2049 default setting from new projects
Add: Charscreen import from Marc's PETSCII editor
Add: BASIC source context menu
Add: Partial renumbering of BASIC code
Add: Clone tile for map editor
Add: MediaTool support for map project (currently MAPDATA only)
Fix: !hex pseudo op
Add: media tool map project mapdataasm
Fix: Wrong type inserted in map editor
Fix: true drive icon was showing in wrong state
Fix: Crash in Preferences when no baselib path was added
Fix: Reloaded-documents not set as modified
Add/Fix: Files opened are opened as project members if they're added in there
Add: Support for C64Debugger (passing labels and program)
Add: Map Editor: Delete all selected tiles at once
Fix: Crash when opening file without solution.
Add: Auto-save and -restart with any changes (non blocking shutdown)
Fix: Step into after run to cursor after first auto break point might trigger additional break point adding
Fix: use 0xa871 as intermediate break point (RUN command), so it also works with Inject to RAM
Fix: Default extension for map export as new charscreen
Add: Option for auto toggling BASIC entry mode
Fix: Better error message on wrong method for !mediasrc pseudo op
Add: Export to image for charscreens
Add: option to strip trailing spaces
Fix: exception for marking check in BASIC files
Fix: Length check for BASIC file was off by one
Add: Error marking in BASIC
Add: BASIC strip REM, skip line if empty, but only if not referenced
Fix: Layout restore now works for all dialogs
Add: Close Solution to main menu
Add: Show the exact match in AutoComplete as well (not on top yet)
Add: AutoComplete sorted by relevance
Fix: No popup for completion if a comma is to the left
Fix: No popup if only match is exact search fragment
Fix: Crash on macro insertion by label
Add: label insertion as macro in hex mode (prefix with 0x)
Add: Directly open .ctm files as map projects
Add: Setting for max MRU entry count
Add: character editing in map project
Add: Copy map to image in clipboard
Add: manual "check for update" menu item
Add: Charset shifting to Character Editor
Add: Option to treat warnings as errors