Opcodes - retro CPU reference

教育

免費 · App 內購買 · 專為 iPad 設計。尚未針對 macOS 驗證。

Opcodes – The Retro CPU Reference The definitive opcode reference for the legendary processors that launched the personal computer revolution. Whether you're a retrocomputing enthusiast, a student of computer history, writing code for classic hardware, or just a big old nerd - the Opcodes app gives you everything you need. Eighteen iconic processors covered: Intel 4004 · Intel 8008 · Intel 8080 · Intel 8085 · Intel 8088 · Zilog Z80 · Motorola 6800 · Intel 8085 · Motorola 6809 · MOS 6502 · Signetics 2650 · RCA 1802 - SC/MP · Motorola 68000 · Intel 8086 · WDC 65816 · Texas Instruments TMS9900 · INMOS Transputer · ARM2 For every opcode:  • Full description of what the instruction does. • Hex, octal, and decimal values. • Flags affected. • Addressing modes and cycle counts. • Assembly code examples - including loops, conditionals, and common patterns. More than just opcodes:  • CPU history and historical context. • IC pinout diagrams. • Notable systems that used each CPU, with memory maps and other background information. • Chip variants and successors. • A silly card game(!) • Simple assembler / disassembler for many CPUs. Built for exploration:  • Search for opcodes by name or category. • Sort by mnemonic, opcode byte, or category. • Filter by category, Quick Find with a colorful map. • Undocumented instructions clearly marked and optionally displayed. More than microprocessors:  • Information on key support chips: video, sound, memory and more. Cool design:  • Clean, readable layout optimised for quick reference. • Multiple colour themes. • Full "dark mode" support. Everything is included with absolutely no in-app purchase required. Recent additions: • Quiz game - test your CPU knowledge! • Share CPU cards - beautiful shareable images showing specs and history for any processor • External references - curated links to community resources for all 18 CPUs • "Opcodes display first" setting - choose whether selecting a CPU shows opcodes or info first • Chip-maker colour themes - Zilog, MOS Tech, and Motorola replace the old themes • Enhanced 6502 docs - JMP page boundary bug, BRK behaviour, and Read-Modify-Write quirks • Fixed Scratchpad hang when switching tabs

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Improved display of flags, and source/destination order Improved Motorola 680x0 instruction display Added SP0256 to support chips, complete with working allophone system. Try making say rude words!

版本1.12

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    John Kennedy
    大小
    61.1 MB
    類別
    教育
    相容性
    須使用 iOS 18.0 或以上版本。
    • iPhone
      須使用 iOS 18.0 或以上版本。
    • iPad
      須使用 iPadOS 18.0 或以上版本。
    • Mac
      須使用 macOS 15.0 或以上版本及配備 Apple M1 或以上版本晶片的 Mac。
    • Apple Vision
      須使用 visionOS 2.0 或以上版本。
    語言
    英文
    年齡分級
    4+
    App 內購買
    是
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    © John Kennedy 2026
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