Call and ret instructions in 8086

 

 

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when 8086 executes a instruction it stores the return address of the calling routine on the memorycall and ret instructions in 8085
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Two instructions control the use of assembly-language procedures: CALL pushes the return address onto the stack and transfers control to a procedure. RET pops Operation for Near Call : When 8086 executes a near CALL instruction, it decrements the At the end of every procedure RET instruction must be executed.Transfers program control to a return address located on the top of the stack. The address is usually placed on the stack by a CALL instruction, and the return 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 A far CALL is a call to a procedure which is in a different segment from that which contains the CALL instruction. When the 8086 executes a far CALL it The RET instruction stands for return. This instruction is used at the end of the procedures or the subprograms. This instruction transfers the execution to the The CALL instruction interrupts the flow of a program by passing control to an internal or external subroutine. An internal subroutine is part of the The same instruction is used to return from procedure (actually operating system sees your program as a special procedure). PROC and ENDP are compiler

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