Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The Stack
A procedure call is supported by a stack. So let's discuss stack in assembly. Stacks are 'Last In First Out' data structures and are used for storing return addresses of procedures and for parameter passing and saving the return value.
In 8086 microprocessor a stack is made in the stack segment. SS register stores the offset of stack segment whereas SP register stores the top of stack. A value is pushed in top of the stack or taken out (poped) from top of the stack. The stack segment may be initialized as below:
STACK_ SEG SEGMENT STACK
DW 100 DUP (0)
TOS LABEL WORD
STACK_SEG ENDS
CODE SEGMENT
ASSUME CS: CODE, SS: STACK_SEG
MOV AX, STACK_SEG
MOV SS, AX ; initialise stack segment
LEA SP, TOP ; initialise stack pointer
CODE ENDS
END
The directive STACK_SEG SEGMENT STACK declares logical segment for stack segment. DW 100 DUP (0) assigns actual size of stack to 100 words. All locations of this stack are initialized to zero. Stacks are recognized by the stack top and so the Label Top of Stack (TOS) has been selected. Please consider that stack in 8086 is a WORD stack. Stack facilities include the use of indirect addressing by a special register, the stack pointer (SP). SP is decremented by itself as items are put on the stack and incremented as they are retrieved. Putting something on to stack is known as a PUSH and taking it off is known as a POP. The address of last element pushed on to stack is termed as the top of stack (TOS).
application problems on electrochemical series
One of the resources we used was Ajeet Khurana's article that talks about the advantages of e-commerce. It was helpful to gain some background on the variety of benefits the electr
I am confuse how i start my coding in this topic please help me to start my coding.
Q. Returns and Procedures definitions in 8086? 8086 microprocessor supports RET and CALL instructions for procedure call. CALL instruction not only branches to indicate address
If we have multiple filters impleted, what is the order in which these filters get implemented? Ans) 1. Authorization filters 2. Response filters 3. Action filters
Write a 'C' functions to arrange the elements of an integer array in such a way that all the negative elements are before the positive elements. The array is passed to it as an arg
What is delegation? Delegation gives a proper mechanism to achieve the desired code reuse. The method is caught in the desired class and forwarded to another class for actual i
For the 8-bit bidirectional register in Figure 3, verify the status of the register after every clock pulse for the LEFT RIGHT /control waveform given. A HIGH on this input permits
reate a directory "Unix" under your home directory. Command(s): ………………………………………….
Analysis describes about the logical and statistical analysis needed for an efficient output. This involves writing of code and performing calculations, but most part of these lang
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd