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Commodore 64, Commodore 64

Perry, Tekla S.; Wallich, Paul. "Design case history: The Commodore 64". IEEE Spectrum, March 1985.

The product was advertised on QVC in the United States for the 2004 holiday season. Some users have installed 1541 floppy disk drives, hard drives, second joysticks and keyboards to these units, which give the DTV devices nearly all of the capabilities of a full Commodore 64. The DTV hardware is also used in the mini-console/game Hummer , sold at RadioShack mid-2005.

During the 1980s, the Commodore 64 was also used to run numerous Bulletin Board Systems using highly optimized Blue Board software.

The first version is the MOS Technology 6581, which is to be found in all of the original "breadbox" C64s, and early versions of the C64C and the Commodore 128. It was later replaced with the MOS Technology 8580 in 1987. The sound quality is a little more crisp on the 6581 and many Commodore 64 fans still prefer its sound. The main difference between the 6581 and the 8580 is the voltage supply: the 6581 uses a 12 volt supply, while the 8580 requires only 9 volts. A voltage modification can be made to use a 6581 in a C64C board (which uses 9V).

Source: Wikipedia > Commodore 64