The program prompts the user for an input string, reverses and displays it. Instructions used to manipulate strings are called string manipulation instructions. We have already used variable length strings in our previous examples. Following is the table showing the list of logical instructions: Next Page . Shift Instructions in 8086: The Shift Instructions in 8086 are follows. Products Customers; Use cases ; Stack ... Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Logical instructions are the instructions which perform basic logical operations such as AND, OR, etc. But I was wondering about how to take a string input and . SAL/SHL; SHR; SAR ; SAL/SHL Instruction : SAL/SHL destination, count. String Instructions. REPE/REPZ − Used to repeat the given instruction until CX = 0 or zero flag ZF = 1. Place a pointer to the beginning of the string in the DX register. The 8086 provides some instructions which handle string operations such as string movement, comparison, scan, load and store. String is s series of data byte or word available in memory at consecutive locations. Previous Page. In this case we use the dl register, i.e. It is either referred as byte string or word string. SAL and SHL are two mnemonics for the same instruction. and values instead of their 16-bit (ax, bx, etc.) None of them take an explicit operand; instead, they all work implicitly on the source and/or destination strings. String is a group of bytes/words and their memory is always allocated in a sequential order. Note – The Solaris mnemonics for certain instructions differ slightly from the Intel/AMD mnemonics. The string instructions operate on strings of bytes. This is the full 8086/8088 instruction set of Intel. The current element (byte or word) of the source string is at DS:SI, and the current element of the destination string is at ES:DI. So we will map our matrix in a linear memory. Ask Question Asked 1 year, 10 months ago. Algorithm: To find the reverse,we just copy the string from one memory location to another in reverse order and display it. REPE/REPZ causes the succeeding string instruction to be repeated as long as the comapred bytes or words are equal (ZF = 1) and CX is not yet counted down to zero. Question 1: A string is a collection of characters. This Rotate Instruction in 8086 with example all bits in a specified byte or word to the left some number of bit positions. Most if not all of these instructions are available in 32-bit mode; they just operate on 32-bit registers (eax, ebx, etc.) ROR Instruction : ROR destination, count. String Instructions. String manipulation instructions in 8086 microprocessor String is s series of data byte or word available in memory at consecutive locations. LSB is placed as a … String Instructions. The string instructions facilitate operations on sequences of bytes or words. Instruction set of 8086 microprocessor can be divided into data copy/transfer instructions, arithmetic and logical instructions, branch/loop instructions, machine control instructions, flag manipulation instructions, string manipulation instructions. In 8086 processor, there are seven groups of instructions. String manipulation instructions in 8086 microprocessor.