You are given following subroutine and contract

$```$

mystery$\_$subroutine

input: $16-$bit unsigned number in R$11$

output: $16-$bit unsigned number in R$12$

; modifies both R$11$ and R$12$

$```$

$```$

mystery$\_$subroutine:

$```$

$```$

clr$.$w R$12$

loop:

add.w R$11,$ R$12$

dec.w R$11$

jnz loop

ret

$```$

$($a$)$ What does this subroutine do$?$ What will be the value of the output in R$12$ when the value in R$11$ is$,$ say $\backslash (\backslash$mathbf$\{$n$\}=10\backslash ).$

$($b$)$ What is the largest value of $\backslash (\backslash$mathbf$\{$n$\}\backslash )$ that this subroutine can handle correctly $($i$.$e$.,$ return a correct output$)?$

Both parts are set up as a numerical answer

Question $2-$ Find the larger number

You see following values in the core registers R$4$ and R$5.$

Which statement is correct: is it R$4>$ R$5$ or is it R$5>$ R$4?$ multiple choice

Question $3-$ Status Flags

You are given following two lines of code. Note that these are byte instructions.

$\backslash [$

$\backslash$begin$\{$array$\}\{$ll$\}$

$\backslash$text $\{$ mov.b $\}$ & $\backslash$# $83,\backslash$text $\{$ R$5\}\backslash \backslash$

$\backslash$text $\{$ add.b $\}$ & $\backslash$# $53,$

$\backslash$end$\{$array$\}$

$\backslash ]$

What will be the value of the status bits after executing these two lines of code?

$($a$)\backslash (\backslash$mathrm$\{$C$\}=\backslash )?$

$($b$)\backslash (\backslash$mathrm$\{$N$\}=\backslash )?$

$($c$)\backslash (\backslash$mathrm$\{$V$\}=\backslash )?$

$($d$)\backslash (\backslash$mathrm$\{$Z$\}=\backslash )?$