Editing MOS Technology 6510 (section)

{{Short description|8-bit microprocessor}}
{{Use mdy dates|date=January 2016}}
{{redirect|6510|the mobile phone|Nokia 6510}}
{{Infobox CPU
|name           = MOS Technology 6510
|image          = KL MOS 6510.jpg
|caption        = 
|produced-start = 
|produced-end   = 
|slowest        = 0.985  | slow-unit = MHz
|fastest        = 1.023  | fast-unit = MHz <!-- check -->
|data-width     = 8
|address-width  = 16
|manuf1         = [[MOS Technology]], [[Rockwell International|Rockwell]], [[Synertek]]
|arch           = MOS 6502
|pack1          = 40-pin [[Dual in-line package|DIP]]
|predecessor    = [[MOS Technology 6502|MOS 6502]]
|successor      = [[MOS Technology 8502|MOS 8502]]
|variant        = MOS 8500, 7501/8501, 8502, 6510T
}}
[[image:MOS Technologies large.jpg|thumb|300px|Image of the internals of a Commodore 64 showing the 6510 CPU (40-pin DIP, lower left). The chip on the right is the [[MOS Technology SID|6581 SID]]. The production week/year (WWYY) of each chip is given below its name.]]

The '''MOS Technology 6510''' is an [[8-bit computing|8-bit]] [[microprocessor]] designed by [[MOS Technology]]. It is a modified form of the very successful [[MOS Technology 6502|6502]]. The 6510 is widely used in the [[Commodore 64]] (C64) [[home computer]] and its variants. It is also used in the [[Seagate ST-251]] MFM harddisk.<ref>[https://github.com/ForgottenMachines/Seagate/blob/main/ST-251/Seagate_ST251_schematic.pdf ST-251 schematic]</ref>

The primary change from the 6502 is the addition of an 8-bit general purpose [[input/output|I/O]] port, although 6 I/O pins are available in the most common version of the 6510. In addition, the address bus can be made [[three-state logic|tristate]] and the CPU can be halted cleanly.