VirtualC64

VirtualC64 is a user-friendly Commodore-64 emulator. It utilizes a cycle-based simulation engine to achieve high compatibility. Although cycle-accurate emulation consumes more computing time than, e.g., line-based emulation, all modern machines provide enough computing power to imitate a C64 in real-time. VirtualC64 does not yet reach the awesome compatibility of the classical emulators such as Hoxs64, Vice, or Frodo, however, plenty of games are already running, and the list of compatible applications grows with every new release. Right now, VirtualC64 supports the following file formats: D64, T64, PRG, P00.

VirtualC64 is open-source software published under the GNU general public license. The core emulator is written in C++. The graphical user interface is a native Cocoa application written in Objective-C.

Preferences

• All emulator preferences dialogs have been merged into a unified preferences panel.
• New options in the emulator settings allow the user to customize the actions taken when opening a media file.
• The input device selection is now retained in the user default storage.
• JiffyDOS Rom images have been added to the list of known images.

CRT Monitor emulation

• Dot mask emulation has been modified to not darken the screen any more.
• It is now possible to set the bloom radius individually for each color channel.
• Cathode rays can be shifted relative to each other.

Cartridges

• Added support for the Expert cartridge.
• Cardridge buttons are now displayed in the bottom bar as small (clickable) icons.

Screenshots

• Now users can choose whether to save the emulator texture (low res) or the upscaled texture (hi res).
• If menu item "Save Snapshot..." is selected, emulation is paused until the screenshot has been saved.

Audio

• Upgraded ReSID to the version used in VICE V3.3.
• While the emulator is running, the sampling rate is adjusted automatically to reduce buffer underflows and overflows.
• Fixed a bug that made FastSID unusable on audio hardware with a sample rate other than 44.1khz.

Joystick emulation

• The assignment of keystrokes to joystick events has been improved when multiple keys are pressed at the same time.