Micro64 v1.00.2012.05.27 Build 669 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 v1.00.2012.05.27 Build 669 Changelog:
- Added optional filter for too NRZI transition pulses (a ka fluxes), whose
time distance is smaller than or equal 2.5 microseconds. The default
setting for this is on.
- Fixed a possible deadlock bug in 1541 emulation routines.

Download: Micro64 v1.00.2012.05.27 Build 669
Source: Here