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BIOS code is not built from standard assembly code, so it requires different debugging techniques.
On an x86-based processor, the BIOS uses 16-bit code. To disassemble this code, use the ux (Unassemble x86 BIOS) command. To display information about the Intel Multiprocessor Specification (MPS), use the !mps extension.
If you are debugging ACPI BIOS code, the preceding commands do not work, because ACPI BIOS is written in ACPI Machine Language (AML). To disassemble this code, you should use !amli u. For more information about this kind of debugging, see ACPI Debugging.
Documentation
!amli set (WinDbg) - Windows drivers
The !amli set extension sets or displays the AMLI Debugger options.
!amli ? (WinDbg) - Windows drivers
The !amli ? extension displays help text in the Debugger Command window for the !amli extension commands.
!idt (WinDbg) - Windows drivers
The !idt extension displays the interrupt service routines (ISRs) for a specified interrupt dispatch table (IDT).
Training
Module
Interactively Debug .NET Apps with the Visual Studio Code Debugger - Training
Learn how to efficiently debug your .NET app by using Visual Studio Code to fix your bugs quickly. Use the interactive debugger within Visual Studio Code to analyze and fix your C# applications.
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