Program a code in Assembly Language to realize the following consecutive actions

a$)$ write number $0$x$00$ to data memory location $0$x$0025$ and wait for $1$ second

b$)$ write number $0$xFF to data memory location $0$x$0025$ and wait for $2$ seconds

c$)$ repeat the cycle $(1-2)$ for $5$ times

You will need to program at least one subroutine to realize the time delay $($wait$)$ function.