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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.
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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
The memory map of the TPA (Transient Program Area)
System area of a typical PC
The 8086 - Pentium Pro Registers
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
DS register accesses memory locations 100000H-1000FFH