Applications of Microprocessor 8086 on Outer Peripherals

May 15th, 2015
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1. INTRODUCTION The 8086 microprocessor is the 16 bit microprocessor which means that the arithmetic logic unit, its internal registers and also the data bus these entire have to work with 16 bit at a time. The microprocessor has 20 bit address bus and therefore 220 memory locations. The pin diagram of 8086 is as shown: The 8086 microprocessor is just like 8085 microprocessor but the difference between

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Applications of Microprocessor 8086 on Outer PeripheralsAPPLICATIONS OF MICROPROCESSOR 8086 ON OUTER PERIPHERALSVishal Dahuja B.Tech. - CSE RC1701A29 Reg. No # 1050070024 vishaldahuja@gmail.com1. INTRODUCTION The 8086 microprocessor is the 16 bit microprocessor which means that the arithmetic logic unit, its internal registers and also the data bus these entire have to work with 16 bit at a time. The microprocessor has 20 bit address bus and therefore 220 memory locations. The pin diagram of 8086 is as shown: The 8086 microprocessor is just like 8085 microprocessor but the difference between them is that the 8085 microprocessor is of 8 bits but that of the 8086 is the 16 bit microprocessor. Also the flags are more in case of the 8086 microprocessor as shown:Figure 1.2The flags are as described below:Figure 1.1Overflow Flag (OF) - Set if the result is too large positive number, or is toosmall negative number to fit into destination operand. Direction Flag (DF) - if set then string manipulation instructions will auto-decrement index registers. If cleared then the index registers will be auto-incremented. Interrupt-enable Flag (IF) - setting this bit enables mask-able interrupts. Single-step Flag (TF) - if set then single-step interrupt will occur after the next instruction. Sign Flag (SF) - set if the most significant bit of the result is set. Zero Flag (ZF) - set if the result is zero. Auxiliary carry Flag (AF) - set if there was a carr

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