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i386
i386 is the 32-bit Intel x86 architecture, an older CPU target the OS still supports.
Named after the Intel 80386, i386 denotes the classic 32-bit x86 instruction set, predecessor to today's 64-bit x86_64. Supporting it means the OS runs on older or constrained 32-bit hardware, with the tighter address space and different conventions that entails. It is one of the four architectures fixes are verified against.
See also
- four-arch / x86_64 / aarch64 / arm64 / i386These are the four processor architectures the system targets, so fixes are checked to work on all of them.
- FP/SIMDFP/SIMD refers to a CPU's floating-point and vector registers, which hold decimal math and batched parallel data.
- firmwareFirmware is the low-level software that runs first at power-on and prepares the machine before the operating system takes over.