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/* Software */
The C64 is often credited with starting the computer subculture known as the demoscene. The C64 lost its top position among demo coders when the 16-bit Commodore Amiga and Atari ST were released in 1985, however it still remained a very popular platform for demo coding up to the early 90s
It is still being actively used as a demo machine , especially for music (its sound chi] chip even being used in special sound cards for PCs, and the Elektron SidStation synthesizer). Unfortunately, the differences between PAL and NTSC C64s caused compatibility problems between U.S./Canadian C64s and those from most other countries. The vast majority of demos run only on PAL machines. {| class="wikitable"! Parameter !! PAL C64 !! NTSC C64|-| CPU Clock Speed || 985,248 Hz || 1,022,727 Hz|-| Raster Lines per Frame || 312 || 263|-| CPU Cycles per Line || 63 || 65|-| Total CPU Cycles per Frame || 19,656 || 17,096|-| Calculated Frame Rate || ~50.12 Hz || ~59.83 Hz|}
Even though it was released in 1982, the C64 was still a strong competitor to the later consoles Nintendo Entertainment System and Sega Master System] thanks to its by-then established software base.
