Question

Assume the label "x:" exists in your data segment. Write the MIPS statement(s) to write the 32-bit value from $t0 to memory at address x

Answer 1

Memory addresses are 32-bit numbers, ranging from 0x00000000 to 0xFFFFFFFF. This is a large amount of memory, most computers do not have actual memory for all of this "address space."
Memory can hold both program instructions and data. One function of the operating system is to assign blocks of
memory for the instructions and data of each process (running program). Another thing a good operating system does is to allow many processes to run concurrently on the computer.

The SPIM simulator always assigns your program to these fixed, even numbered locations, for your convenience:

    0x00400000 - Text segment - program instructions
    0x10000000 - Data segment
    0x7FFFFFFF, and decreasing addresses - Stack segment