nuttx/Documentation/platforms/x86/index.rst

===========
Intel 80x86
===========

All x86 source reside in lower-level common, chip-specific, and architecture-specific
directories.

arch/x86/src/common/ Directory
==============================

This directory holds source files common to all x86 architectures.

Architecture-Specific Directories
=================================

Architecture-specific directories hold common source files shared for by
implementations of specific x86 architectures.

``i486``
  This directory holds logic appropriate for any instantiation of the 32-bit
  i486 architecture.

Chip-Specific directories
=========================

The same x86 architecture may be realized in different chip implementations.
For SoC chips, in particular, on-chip devices and differing interrupt
structures may require special, chip-specific definitions in these chip-
specific directories.

``qemu``
  This is the implementation of NuttX on the QEMU x86 simulation.

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   :maxdepth: 1
   :glob:

   */*