Hardware

BIOS Processor Instructions INT Address Type Function Description 00h 0000:0000h Processor Divide Error 01h 0000:0004h Processor Single Step 02h 0000:0008h Processor Non-maskable interrupt 03h 0000:000Ch Processor Breakpoint instruction 04h 0000:0010h Processor Overflow instruction 05h 0000:0014h BIOS Processor Print screen Bound range exceeded 06h 0000:0018h Processor Invalid opcode 07h 0000:001Ch Processor Read more…

The Linux boot process have different stages, here i will try to explain all of them in detail mapping all memory addresses used by each stage. Starting with POST tests definitions and explaining the BIOS instructions and configurations.