www/notes/mos-6502.md

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MOS 6502 Microprocessor

Name	6502
Introduced	1975
Data Width	8-bit
Address Width	16-bit
Endianness	Little
Registers	8-bit A, X, Y, Stack. 16-bit PC
Package	40-pin DIP
Instruction Count	56

Addressing Modes

• Implied
• Immediate
• Absolute
• Indexed Absolute
• Indexed Zero-Page
• Relative
• Accumulator
• Indirect, X
• Indirect, Y

Datasheets

• WDC W65C02S NMOS Variant

Notable Usage (includes variants)

• Nintendo Entertainment System
• Atari 2600
• Apple II
• Commodore 64
• BBC Micro