MIPS Standard Instructions

The following MIPS standard instructions MUST be supported in the DCoreWars game engine (both uniprocessor and distributed versions). For details of the binary encoding of these instructions, refer to the attached ``MIPS Assembly Language'' handout and/or the online reference documentation.

Standard MIPS instructions that MUST be supported by the RVM of the DCoreWars game.

Instruction	Short description
Branch/Jump instructions
beq	Branch on equal
bne	Branch on not equal
bgtz	Branch on greater than zero
bgez	Branch on greater than equal zero
bltz	Branch on less than zero
blez	Branch on less than equal zero
j	Unconditionally jump
jr	Unconditionally jump to register
Arithmetic instructions
add	Add signed quantities
addi	Add signed immediate
addu	Add unsigned quantities
addiu	Add unsigned immediate
sub	Subtract
subu	Subtract unsigned quantities
mult	Multiply
divu	Divide
and	Logical AND
andi	Logical AND, immediate
or	Logical OR
ori	Logical or, immediate
nor	Logical NOR
xor	Logical XOR
xori	Logical XOR, immediate
sll	Shift left logical
sllv	Shift left logical variable
srl	Shift right logical
srlv	Shift right logical variable
sra	Shift right arithmetic
srav	Shift right arithmetic variable
Conditional instructions
slt	Set less than
slti	Set less than immediate
sltu	Set less than, unsigned quantities
sltiu	Set less than immediate, unsigned
Data movement instructions
lw	Load word
sw	Store word
mfhi	Move from HI
mflo	Move from LO
Miscellaneous instructions
syscall	System call (see below)

Technically, many of these instructions detect overflow. For the purposes of this project, however, design groups MAY ignore that and treat all operations as ignoring overflow.