Assume s$1$ has been initialized to a signed integer and hence it might have a negative value.

a$)$ The following RISC$-$V code increments s$1$ by $1$ only if the current value in s$1$ is within a specific

range. What is this range?

$....$

slt t$1,$ s$1,$ zero

bne t$1,$ zero, Done

slti t$2,$ s$1,8$

beq t$2,$ zero, Done

addi s$1,$ s$1,1$

Done: $....$

b$)$ Explain why the following RISC$-$V code does the same task as the code in part $($a$)$ above.

Support your explanation with examples.

$....$

sltiu t$1,$ s$1,8$

beq t$1,$ zero, Done

addi s$1,$ s$1,1$

Done: $....$