I Format Coding
	Coding Examples

R-Format Coding

Load Coding Example

addi $t5, $15, 40

1. Look up the values of the registers: $t5 is 13 = 01101₂, but $15 is just plain 15, or 01111.

2. Convert the immediate value to binary: 40 = 101000₂.

3. Look up the instruction to find its type and format. (You'll find it on p. A-55.) Plug the numbers into the format, being careful to get the registers in the right places, and pad the immediate to 16 bits:
   

   001000

   01111

   01101

   0000000000101000

   
   

4. Regroup the bits.
   

   0010

   0001

   1110

   1101

   0000

   0000

   0010

   1000

   
   

5. Represent as a hex number: 21ED0028

R-Format Coding

Load Coding Example