LOOP decrements ecx and checks if ecx is not zero, if that condition is met it jumps at specified label, otherwise falls through. LOOPE decrements ecx and checks that ecx is not zero and ZF is set - if these conditions are met, it jumps at label, otherwise falls through.
What happens upon the execution of a call instruction?
When an x86 CALL instruction is executed, the contents of program counter i.e. address of instruction following CALL, are stored in the stack and the program control is transferred to subroutine.
What is a call instruction explain its execution?
Description. The call instruction calls near procedures using a full pointer. call causes the procedure named in the operand to be executed. When the called procedure completes, execution flow resumes at the instruction following the call instruction (see the return instruction).
What are the loop instructions of 8086?
Loop Instructions 8086 MicroprocessornameMnemonic and formatTest ConditionLOOPLOOP OprCX not equal to 0Loop while zero, or equalLOOPZ OprZF=1 and CX not zeroLoop while non zero or not equalLOOPNZ OPRZF=0 and CX not 0Branch on CXJCXZ OPRCX = 0
How do you explain a for loop?
A For Loop is used to repeat a specific block of code a known number of times. For example, if we want to check the grade of every student in the class, we loop from 1 to that number. When the number of times is not known before hand, we use a While loop.
When a do while loop is run the loop is guaranteed to execute at least one time?
The do-while loop is similar to the while loop, except that the test condition occurs at the end of the loop. Having the test condition at the end, guarantees that the body of the loop always executes at least one time.