8086 processor instruction set

second operand (as set by CMP instruction) Unsigned Algorithm: if CF = 0 then jump Example: include 'emu8086 inc' ORG 100h MOV AL, 5 CMP AL, 5

The 8086 microprocessor supports 8 types of instructions − Data Transfer Instructions Arithmetic Instructions Bit Manipulation Instructions String 

8086 INSTRUCTION SET The MOV instruction copies a word or byte of data from a specified source to a The LOCK prefix prevents another processor from

The 8086 can read a 16-bit word at an even address in one operation and at an odd address in two operations The least significant byte of a word on an 8086 family microprocessor is at the lower address The ALU performs all basic computational operations: arithmetic, logical, and comparisons

The processor executes the current instruction and the control is transferred to the Trap interrupt service routine IF- Interrupt Flag: If this flag is set, the mask able 

8088 has the same ALU, same registers and same instruction set as the 8086 But the only difference is 8088 has only 8-bit data bus and 20-bit address bus

For a small system in which only one 8086 microprocessor is employed as a CPU, the system BIU has segment registers, instruction pointer, address generation and bus Signal step flag: Once set, a single-step interrupt occurs after the

The Intel 8086 high performance 16-bit CPU is available in three clock rates: 5, 8 and restarts execution, as described in the Instruction Set description, when

Processor is characterized by its : – Register Set Intel 8086: start of the 80x86 family tree Flags set/cleared as “side-effects” of an instruction • Part of 

on the 8086, 8088 and 8089 microprocessors It is written for 8086 microprocessor family coprocessor, in effect, extends the instruction set of its host