Micro64 v1.00.2011.11.15 Build 624 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 v1.00.2011.11.15 Build 624 Changelog:
- Change 1541 diskette change duration to a bit longer time duration
- Change 1511 diskette drive confusion PRNG random generator from plain LCG to a KISS-like PRNG (XorShift128+LCG32+MWC32) when the electronics see too many (more than two) low bits at the sync bit sequence mark search phase, but this drive electronics confusion part should be better modelled in a right way in the near or far future, instead over a stupid PRNG.

Download: Micro64 v1.00.2011.11.15 Build 624
Source: Here