Intel and AMD x86 processors in 32-bit mode.
The baseline is the 80486, also known as i486.
(Debian's baseline is now the Pentium 1.)
Floating-point architecture: x87. (SSE2 not available in Debian's baseline.)
Operating systems: Linux, BSD, MacOS X, MS Windows.
Debian architecture name: i386
- Instruction set architecture: any Intel or AMD manual of the last 20 years.
- ELF application binary interface: System V Application Binary Interface, Intel386 Architecture Processor Supplement
- MacOS X application binary interface: OS X ABI Function Call Guide: IA-32 Function Calling Conventions