asm-how-computer-startup
x86 架构计算机是如何启动的? 16-bit Processors and Segmentation (1978) The IA-32 architecture family was preceded by 16-bit processors, the 8086 and 8088. The 8086 has 16-bit registers and a 16-bit external data bus, with 20-bit addressing giving a 1-MByte address space. The 8088 is similar to the 8086 except it has an 8-bit external data bus. The 8086/8088 introduced segmentation to