pleaae explain well, there's a current solution on this but i do not understand how he got his top and bottom stack. I trust you'll do better

thanks

it's just question D btw

d. Letters A, B, C and F are written onto an empty stack. thereafter the stack is read once: then X,Y and Z are written onto the stack and the stack is read twice. What is the stack length and the content of the stack pointer and stack base after the execution? (3marks) e. What is the address range of a memory with n cells? If an 8Mbit is organized as 1M by 8 . what is the address range and how many data lines are needed? (3marks)