VirtualC64 emulates a Commodore 64 personal computer on your Macintosh. 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.

In short: VirtualC64 tries to combine the ongoing fascination of the ancient Commodore computers with the great user experience of today’s Macs.

Changelog:

Fixed in beta 11

• 1. Fixed a bug that caused the emulator to crash during startup.

Fixed in beta 10

• 1. Emulator is now a native snow leopard app.
• 2. Internal communication between emulator and GUI has been rewritten from scratch.
• 3. Fixed a bug that caused the emulator to crash when importing the reset image in NTSC mode.

Fixed in beta 9

• 1. Emulator now supports US keyboards (thanks, Carl!)
• 2. Source code is now compatible with gcc 4.2 and XCode 3.2
• 3. Emulator can now handle D64 images with different file sizes.
• 4. Fixed a bug that caused sporadic crahes under snow leopard.

source: dirkwhoffmann.de