Micro64 1.00.2011.09.25 Build 586 is released. Micro64 is a freeware commodore c64 emulator. Currently micro64 has two different VIC II emulation modes: cycle exact (default, works fine) and half-cycle exact (next-gen, rudimentary implementation – currently damn slow).

Micro64 1.00.2011.09.25 Build 586 Changelog:
- Rewrote big parts of the CIA emulation
- Rewrote big parts of the VIC-II half-cycle-exact emulation
- Rewrote the whole CPU IRQ/NMI interrupt handling stuff
- Improved PAL emulation
- Improved IEC serial cable delay emulation
- Fixed some bugs in the VIA emulation

Download: Micro64 1.00.2011.09.25 Build 586
Source: Here