Pentium Microprocessor Module M20.1
Intel Microprocessors 8086 -- 40-pin DIP (dual in-line package) 80286 -- 68-pin PGA (pin grid array) 80386DX -- 132-pin PGA 80486DX -- 168-pin PGA The Pentium -- 237-pin PGA The Pentium Pro -- 387-pin PGA
80486DX -- 168-pin PGA
Some Intel Microprocessors
Some Motorola Microprocessors
The Intel iCOMP Index
The PC Memory Map
The memory map of the TPA (Transient Program Area)
System area of a typical PC
The 8086 - Pentium Pro Registers
The EFLAG and FLAG Registers
The Segment Register in the Protected Mode
The Descriptor Formats Base address = starting location of memory segment Limit = last offset address in segment G = granularity bit G = 0: Limit is length of 1 to 1M bytes G = 1: Limit is any multiple of 4K bytes Note: 220 x 4K = 220 x 212 = 232 = 4G bytes
register
The Access Rights Byte
DS register accesses memory locations 100000H-1000FFH