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---
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title: MOS 6502 Microprocessor
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2022-05-16 18:26:38 +00:00
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last_updated: '2022-05-16T14:26:03-04:00'
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2022-04-28 16:37:12 +00:00
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---
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Name | 6502
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--- | ---
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Introduced | 1975
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Data Width | 8-bit
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Address Width | 16-bit
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Endianness | Little
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Registers | 8-bit A, X, Y, Stack. 16-bit PC
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Package | 40-pin DIP
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Instruction Count | 56
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## Addressing Modes
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- Implied
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- Immediate
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- Absolute
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- Indexed Absolute
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- Indexed Zero-Page
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- Relative
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- Accumulator
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- Indirect, X
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- Indirect, Y
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## Docs
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- [WDC W65C02S NMOS Variant](https://www.westerndesigncenter.com/wdc/documentation/w65c02s.pdf)
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- [6502.org: collection of 6502 resources](http://6502.org/)
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## Notable Usage (includes variants)
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- Nintendo Entertainment System
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- Atari 2600
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- Apple II
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- Commodore 64
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- BBC Micro
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