$(4$ Points$)$ Answer the following:

a$)(2$ Points$)$ Assume that the address in SP is $0$x$0000\_2030$ initially, what is its value after executing the instruction POP $\{r0-r3,PC\}?$ Show how you determined the address value clearly. An answer with only an address number will be considered incorrect.

b$)(2$ Points$)$ You want to store the word $0$x$3055$ffa$1$ in byte$-$addressable memory starting at address $0{0000}_{4000}.$ How will the word appear in a little$-$endian memory system and a big$-$endian memory system? Demonstrate using a table and indicate the addresses clearly.