www/notes/mos-6502.md

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2022-04-28 16:37:12 +00:00
---
title: 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](https://www.westerndesigncenter.com/wdc/documentation/w65c02s.pdf)
## Notable Usage (includes variants)
- Nintendo Entertainment System
- Atari 2600
- Apple II
- Commodore 64
- BBC Micro