My mips code is designed for dynamix memory allocation. The parameters for the code are listed below

The memory pool is limited to $4096$ bytes

The memory pool divided into equal chunks of $32$ bytes $($chosen due to MIPS architecture$).$ Thus, the $4096$ bytes memory will be divided into $128$ chunks.

Despite allocation requests coming in any size, the actual allocations should be performed in integer multiples of chunks. Therefore, the byte size request will be rounded up to the closest multiple of $32.$

To succeed in this task, the code must allocate and deallocate memory upon request. If some of the requests cannot be handled, exception handling must be activated to resolve the issue.

I want to add a loop program that has the user choose between allocation or dellocation of the inpute number. They would have to choose $1$ to allocate and $2$ to dealocate. If they chose another number $($like $3)$ then an error message would pop up$.$ How do I add a mips program that makes the user choose between allocation and dealocation?