Is it likely that several sections of a software system need to refer to each other?

### A good answer might be:

Yes.

# Loading Register Eight

Yes. All software consists of interconnected modules. A connection is made when one module refers to an address in another.

The next line: `ori $8,$0,0x2` translates into a 32-bit machine instruction. The machine instruction, upon execution, puts a 32-bit two's complement positive two into register eight (details later).

    ## Program to add two plus three
            .text
            .globl  main

    main:
            ori     $8,$0,0x2       # put two's comp. two into register 8
            ori     $9,$0,0x3       # put two's comp. three into register 9
            addu    $10,$8,$9       # add register 8 and 9, put result in 10

    ## End of file

The instruction after that translates into a machine instruction that (upon execution) puts a three into register nine. The final instruction translates into a machine instruction that (upon execution) adds register eight to register nine and puts the 32-bit result into register ten.

### QUESTION 14:

What algorithm do you suppose is used for the 32-bit addition?