Program control instructions cmp

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The program control instructions direct the flow of a program and allow the flow to change. A change in flow often occurs after a decision made with the CMP or TEST instruction is fol- lowed by a conditional jump instruction. CS222 Lecture: Program Control Instructions; 8/13/91 revised 9/1/00 Need: Thus, the CMP and TST instructions are NOT needed to branch based on theprogram control. Program control instructions change or modify the flow of a program. The most basic kind of program control is the unconditional branch or unconditional jump. The pentultimate kind of program control is the conditional branch or conditional jump. 17 Aug 2017 program control instructions in assembly language, program control A change in flow often occurs after a decision made with the CMP or A change in flow often occurs when decisions, made with the CMP or The main type of programme control instruction, the jump (JMP), allows the g Program control instructions (review) g Unconditional branch g Simple branch instructions g TST and CMP instructions g Signed comparison branches. Assembly Language Lecture 5 & 6 (Flow Control Instructions) branching structures enable a program to take different paths, depending on conditions. 7 The CMP Instruction The jump condition is often provided by the CMP (compare) to control the flow of a program. ? Use both conditional and unconditional loop instructions. to control the flow of a program. ? Use the call and return instructions to include procedures. in the program structure. ? Use machine control instructions (Flag Control) to modify. the flag bits. program. FLOW CONTROL INSTRUCTIONS. 1. ASSEMBLY LANGUAGE PROGRAMMING. 82 The most frequent WAY IS TO use the CMP or TEST instructions. These instructions can change the flow of control in a program. Conditional Let us discuss the CMP instruction before discussing the conditional instructions.