VirtualC64 emulates a Commodore 64 personal computer. I wrote the software with two major goals in mind. First, I wanted to create an emulator that can be used as a demonstrator program in a first year or second year course on computer engineering. To achieve this goal, I have integrated various debugging capabilities that let you peek inside the CPU, RAM, ROM, or one of the custom chips. Second, I tried to make the emulator as user friendly as it can get.

VirtualC64 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.

Requirements:
OS X 10.11+
64-bit Intel

Also available is:
Version 1.0rc4 for 64-bit Intel OS X 10.7+