Opcodes
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 chip, with memory maps.
• 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.
Beautifully designed:
• Clean, readable layout optimised for quick reference.
• Multiple colour themes.
• Full "dark mode" support.
Everything is included with absolutely no in-app purchase required.
評分與評論
- 此 App 尚未收到足夠的評分或評論，無法顯示概覽。
What's New:
• 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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資訊
- 供應商
- John Kennedy
- 大小
- 51 MB
- 類別
- 教育
- 相容性
需要 iOS 18.0 或以上版本。
- iPhone
需要 iOS 18.0 或以上版本。 - iPad
需要 iPadOS 18.0 或以上版本。 - Mac
需要 macOS 15.0（或以上版本）以及配備 Apple M1（或以上版本）晶片的 Mac。 - Apple Vision
需要 visionOS 2.0 或以上版本。
- iPhone
- 語言
- 英文
- 年齡分級
4+
- 4+
- App內購買
是
- Buy Me a Coffee $30.00
- 版權
- © John Kennedy 2026