DEC Opcodes

DEC Opcodes

By John Kennedy

DEC Opcodes is a technical reference tool providing comprehensive instruction sets and architectural specifications for five iconic Digital Equipment Corporation minicomputers. It serves as a digital archive for computer history enthusiasts and engineers, offering detailed technical data alongside historical context and archival imagery.

Overview · Full Intel report in progress

The App DNA

What makes this app unique?

For Computer history enthusiasts, retro-computing hobbyists, and systems engineers interested in classic DEC architectures.

Key features

Instruction Set Referencestandard

Provides detailed opcode data including octal/hex encoding, flag impacts, addressing modes, and cycle counts for PDP-1, PDP-8, PDP-10, PDP-11, and VAX architectures.

System Specificationsstandard

Includes comprehensive documentation on register architectures and system-level hardware configurations for each supported machine.

Historical Archivestandard

Features historical context, cultural impact summaries, and archival photographs of original system front panels and hardware.

Implementation Examplesstandard

Offers assembly code examples and technical implementation notes to assist in understanding the practical application of each instruction.

How much does it cost?

free

Velocity

Intense developmentShow more...

5 versions in history. Development pace: intense.

See all version history

Who built it?

John Kennedy

13+ apps tracked · Education

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User Sentiment

What do users think recently?

How are ratings & reviews evolving?

App Store
5.00 · 2

Not enough recent reviews to extract reliable themes yet.

Read the full review analysis

Competition

Competitive landscape for DEC Opcodes

How's the Education market?

The rivals identified

The Analyst's Read

Key takeaways for DEC Opcodes

Where is it heading?

Bottom line

This app functions as a specialized, high-fidelity technical encyclopedia for the legacy hardware architectures of Digital Equipment Corporation.

Report last updated

Disclosure: Independent intel to help mobile builders succeed.

AI-powered analysis with automated quality gates, built from publicly available sources. Marlvel.ai is not affiliated with, endorsed by, or sponsored by DEC Opcodes, its developer, the app publisher, Apple, or Google Play. All trademarks, logos, and screenshots referenced remain the property of their respective owners.

Cite this report

Marlvel.ai. “DEC Opcodes Intelligence Report.” Updated May 4, 2026. https://marlvel.ai/apps/dec-opcodes

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