$1\mathrm{.}1$ You are to write an IAS program to compute the results of the following equation.

$Y={\displaystyle \underset{x=1}{\overset{N}{}}}x$

Assume that the computation does not result in an arithmetic overflow and that $x,Y,$

and $N$ are positive integers with $N1.$ Note: The IAS did not have assembly language,

only machine language.

a$.$ Use the equation $\frac{?}{\text{S}\text{u}\text{m}}(Y)=\frac{N(N+1)}{2}$ when writing the IAS program.

b$.$ Do it the "hard way," without using the equation from part $($a$).$

$1\mathrm{.}2$ a$.$ On the IAS, what would the machine code instruction look like to load the contents of memory address $2$ to the accumulator?

b$.$ How many trips to memory does the CPU need to make to complete this instruction during the instruction cycle?