The 6510 is a microprocessor from the 1970s that was used in Commodore's legendary C64 home computer.
Operating at clock frequencies between 20 kHz and 2 MHz, the 6510 from MOS-Technologies had a 16-bit wide address bus and an 8-bit wide data bus, which meant that the addressable working memory was a maximum of 64 KB. In addition, the 6510 had several registers, such as five 8-bit registers and one 16-bit register, two index registers, one status register and an instruction counter. The instruction set consisted of 56 basic instructions. Decimal number processing was supported by special devices.