Support Instructions

kanade32 supports some MIPS I instructions.

Kanade32 Instructions

Arithmetic

addi rt, rs, imm
- rt = rs + imm
addiu rt, rs, imm
- rt = rs + imm
add rd, rs, rt
- rd = rs + rt
addu rd, rs, rt
- rd = rs + rt
sub rd, rs, rt
- rd = rs - rt
or rd, rs, rt
- rd = rs | rt
and rd, rs, rt
- rd = rs & rt
andi rt, rs, imm
- rt = rs & imm
nor rd, rs, rt
- rd = ~(rs | rt)
slt rd, rs, rt
- rd = rs < rt
slti rt, rs, imm
- rt = rs < imm
xor rd, rs, rt
- rd = rs ^ rt
xor rt, rs, imm
- rt = rs ^ imm

Jump

j target
- pc = (pc[uppert:4bit] | (target immediate[26bit] * 4))
jal target
- ra = pc + 4
- pc = target immediate[26bit] * 4
jr rs
- pc = rs

branch

beq rs, rt, offset
- if(rs == rt) pc += (offset * 4)
bne rs, rt, offset
- if(rs != rt) pc += (offset * 4)
ble rs, rt, offset
- if(rs <= rt) pc += (offset * 4)
blez rs, offset
- if(rs <= 0) pc += (offset * 4)
blt rs, rt, offset
- if(rs < rt) pc += (offset * 4)
bltz rs, offset
- if(rs < 0) pc += (offset * 4)

Memory Access

lw rt, offset(rs)
sw rt, offset(rs)

Reference of MIPS instructions

MIPS Reference Sheet

WIP

lui
- need to implement immediate shifter
(Multiply)
- need to implement multiply and divide unit
- need to implement HI/LO registers
bltzal
- need to implement full instructions input for DECODER module to identify bltz and bltzal
bge, bgez, bgezal, bgtz
- need to enhance comparator in ALU