# 8086 Register Command Debugger > 8086 Register Command Debugger is an MS-DOS machine-code inspection tool written in 8086 assembly. It loads a program into a 64 KB segment, decodes 8086 instructions and lets users inspect or edit memory and registers while stepping through real CPU instructions using the Trap Flag. - Type: Tool - Targets: Binary - Category: Debugging and dynamic analysis - Relationship: Foundation tool - Sources reviewed: 2026-11-06 - Added to the catalog: 2026-11-06 - Original resource: - Primary source: - Catalog page: - Record JSON: - Chinese version: [简体中文](https://awesomerea.org/zh/resources/8086-register-command-debugger/index.md) ## Requirements & limits - **Prerequisites:** MS-DOS or a compatible environment such as DOSBox is needed to run the executable. - **Scope:** The program uses a 64 KB memory segment and original 8086 instructions. - **License:** MIT license. ## Primary sources 1. ## More in Native binaries - [advantage](https://awesomerea.org/resources/advantage/index.md) · Tool - [Valkyrie](https://awesomerea.org/resources/valkyrie-malware-analyzer/index.md) · Tool - [PE Disassembler](https://awesomerea.org/resources/pe-disassembler-ddeeduck/index.md) · Tool - [SIC/XE Disassembler and Linking Loader](https://awesomerea.org/resources/sicxe-disassembler/index.md) · Tool - [Malware Deobfuscator](https://awesomerea.org/resources/malware-deobfuscator/index.md) · Tool - [flashkit](https://awesomerea.org/resources/flashkit/index.md) · Tool ## About this entry The description was reviewed against primary sources. Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.