subroutine call and return instructions
explain call and ret instructions in 8085subroutine in computer architecture
subroutine in assembly language
subroutine vs function
subroutine example
types of subroutine

Calling a subroutine requires a deviation from the default sequential execution of instructions. When a program branches to a subroutine, the processor begins The Call Subroutine (CALL) instruction is used to execute a user-defined Subroutine code-block. When a Call Subroutine instruction is executed, Definition. The Call instruction is required to call a SubroutineProgram from the Main Program. The Call instruction resides in the Coil Area of the MainCALL instruction is used to call the subroutine. RET instruction must be included at the end of the subroutine to initiate the return sequence to the main Another control transfer instruction is the CALL instruction, which is used to call a subroutine. Subroutines are often used to perform tasks that need to Return PC to instruction after call sequence. Handle nested subroutine calls. Save and restore caller's registers. Pass an arbitrary number of arguments. 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