Instruction Set of 80386 Microprocessor: The 80386 processor can support all the instructions of 80286. Usually, the instruction sets of 80286 are designed to operate with 8-bit or 16-bit data, but the same mnemonics may…
Operating Modes of 80386 Microprocessor: The Operating Modes of 80386 Microprocessor are given below: Real addressing mode, Protected mode, and Virtual 386 mode. In this section, the above three modes are explained elaborately. Real addressing…
Data Types of 80386 Microprocessor: The 80386 processor is able to support the following data types: Bit Bit Field: A group of 4 bytes ( 32 bits) Bit String: A string of contiguous bits of…
Addressing Modes of 80386 Microprocessor: The 80386 can operate in all the addressing modes which were available with the 80286 processor. The 80386 processor can also operate in all addressing modes of 80286 with 32-bit…
Intel 80386 Pin Diagram Description: The 80286 family has a sinking current of 2.0 mA but each output pin of the 80386 is capable of sinking 4.0 mA current for address and data buses or…
Registers of 80386 Microprocessor: The 80386 processor has significantly extended the 8086 register set. All the registers of 80286 are existing in the 80386 processor and some new registers have been added in 80386. Generally,…
Internal Architecture of 80386 Microprocessor: The simplified block diagram of the 80386 processor is depicted in Fig. 11.31 and Fig. 11.32 shows the detailed architecture of 80386. The internal architecture of the 80386 processor consists…
Protected Virtual Address Mode (PVAM) in 80286: Protected Virtual Address Mode (PVAM) in 80286 - The 80286 executes a fully upward-compatible superset of the 8086 instruction set in protected virtual address mode. The PVAM operation…
Real Addressing Mode of 80286: In the Real Addressing Mode of 80286 operation, 80286 executes a fully upward-compatible instruction of the 8086 instruction set. It works as a fast 8086. In Real Addressing Mode of…
80286 Instruction Set: The 80286 Instruction Set are upwardly compatible with that of the 8086 processor. Most of the 80286 Instruction Set are the same as the instructions of 8086. The additional instructions of 80286…