CCS64 is a Commodore 64 Emulator for PC and also in the future other
platforms. It was developed by me, Per Håkan Sundell, as my Master Thesis at
my university in 1995 and have been expanded a lot since then. My personal
interest in the C64 has been very intensive since 1983 when I was spending
nearly all my time with it, and I was deeply involved in the so called
"Scene". When I later in 1987 bought my Amiga 500, I missed the old good times
I had with my C64 and since then I have tried my very best to make all the old
programs to work on my new machines. One of my first attempts was to resurrect
the old C64 music, the famous SID chip. In 1990 I and Ron Birk released a demo
called "100 most remembered C64 tunes" which was very popular, and in 1991 we
released the very first tool for Amiga called "PlaySID" which later inspired a
lot of similar programs on other platforms.

CCS64 is a program that runs on your PC that turns your computer into an old
Commodore 64 computer. This means that the program simulates, or rather
emulates the old computer, enabling you to run most of the old software you
had for that old machine, running it just like it would in the past. Of course
there are some small differences compared to the real thing, but my goal has
been to minimize the differences as much as it is possible.

Facts

CCS64 emulates briefly the following things of an old C64 system:

The main Commodore 64 console, with the keyboard and peripherals like
joysticks, paddles and mouse. It emulates both the different systems sold in
Europe as well as the USA. Up to four 1541 disk-drives are emulated (which
means that you use special files on your PC, as a replacement for the old 5
1/4 inch floppy disks) The C2N cassette recorder is also emulated (which means
the you use special files on your PC, as a replacement for the old magnetic
tapes) Many of the old cartridges (that means special hardware expansions for
the C64, which were plugged in at the back of the computer) are also emulated.

http://www.computerbrains.com/ccs64/