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.