Introduction to MIPS R2000

3.2.2 DATA ALIGNMENT

Data alignment means putting the data at a memory offset equal to some multiple of the word size, which increases the system's performance due to the way the CPU handles memory.

List data sizes Apply to MIPS chips :

3.2.2.1 MIPS Data Size

Show Data Alignment in MIPS :

3.2.2.2 Data Alignment

3.2.3 REGISTERS

Register set as well as the instruction set.

3.2.3.1 MIPS register conventions

- SPIM does not implement all of co processor 0’s register, since they are not much useful in a simulator or part of the the memory system, which is not implemented.

3.2.3.2 trap register

- SPIM provide trap registes

3.2.3.3 exception code register

- The exception code bits contain a code from the table 3.1.5 describing the cause of an exception.

3.2.4 SYSTEM CALL 

Assembly programs request a service by loading the system call (syscall) instruction.

3.2.4.1 system call function

3.3.5 MIPS ASSEMBLY LANGUAGE PROGRAM FORMAT 

MIPS Program have a format that comprises of four columns 

3.2.5.1 MIPS Program Format

Column 1 : LABEL (OPTIONAL)

          A label is usd to mark a specific point in the program.

Column 2 : OPCODE (OPERATION CODE)

          Opcode is the field that denoted the basic operation and format of an instruction.

                Example opcode : add, j, mul, div, etc

Column 3 : OPERAND

          Operand may contain registers, shift amount, label to jump into and constant or address.

Column 4 : COMMENT

              Comment is anything that follow "#" on the line.

           Example : # Invoke the operating system

Published by :

Syaqira Liyana Binti Ahmad Ghazali 

( B031310568 )