35.3.1.4. INTEGER ARITHMETICAL ON MIPS

	
+------------------------------+
|	Len	Value
|	6	0
|	5	rs
|	5	rt
|	5	rd
|	5	0
|	5	xx
+------------------------------+


Command				xx
ADD	rd,rs,rt		10 0000		Add
ADDU	rd,rs,rt		10 0001		Add Unsigned
DADD	rd,rs,rt		10 1100		Doubleword Add
DADDU	rd,rs,rt		10 1101		Doubleword Add Unsigned

	rd <- rs + rt



DDIV	rs,rt			01 1110		Doubleword Divide Signed
DDIVU	rs,rt			01 1111		Doubleword Divide Unsigned
DIV	rs,rt			01 1010		Divide Signed Word
DIVU	rs,rt			01 1011		Divide Unsigned Word
	{in opcode rd = 0}

	(LO,HI) <- rs / rt		(LO - div, HI - mod)



DMULT	rs,rt			01 1100		Doubleword Signed Multiply
DMULTU	rs,rt			01 1101		Doubleword Unsigned Multiply
MULT	rs,rt			01 1000		Multiply Word Signed
MULTU	rs,rt			01 1001		Multiply Word Unsigned
	{in opcode rd = 0}

	(LO,HI) <- rs * rt



SUB	rd,rs,rt		10 0010		Subtract word
SUBU	rd,rs,rt		10 0011		Subtract unsigned word	
DSUB	rd,rs,rt		10 1110		Doubleword subtract
DSUBU	rd,rs,rt		10 1111		Doubleword subtract unsigned

	rd <- rs - rt



+------------------------+	
|	Len	Value    |
|	6	00 1000  |
| 	5	rs       |
|	5	rt       |
|	16	immm     |
+------------------------+


ADDI	rt,rs,imm	00 1000		Add Immediate Signed
ADDIU	rt,rs,imm	00 1001		Add Immediate Unsigned
DADDI	rt,rs,imm	01 1000		Add Doubleword immediate signed
DADDIU	rt,rs,imm	01 1001		Addd Doubleword immediate unsigned

	rt <- rs + imm

NOTE

	Use MFHI and MFLO operations for Load Data from LO,HI registers



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