NiosII opcodes
| op | instruction |
| op | instruction |
| op | instruction |
| op | instruction |
|---|
| 0x00 | call | 0x10 | cmplti | 0x20 | cmpeqi | 0x30 | cmpltui
|
| 0x01 |
| 0x11 |
| 0x21 |
| 0x31 |
|
| 0x02 |
| 0x12 |
| 0x22 |
| 0x32 | custom
|
| 0x03 | ldbu | 0x13 |
| 0x23 | ldbuio | 0x33 | initd
|
| 0x04 | addi | 0x14 | ori | 0x24 | muli | 0x34 | orhi
|
| 0x05 | stb | 0x15 | stw | 0x25 | stbio | 0x35 | stwio
|
| 0x06 | br | 0x16 | blt | 0x26 | beq | 0x36 | bltu
|
| 0x07 | ldb | 0x17 | ldw | 0x27 | ldbio | 0x37 | ldwio
|
| 0x08 | cmpgei | 0x18 | cmpnei | 0x28 | cmpgeui | 0x38 |
|
| 0x09 |
| 0x19 |
| 0x29 |
| 0x39 |
|
| 0x0A |
| 0x1A |
| 0x2A |
| 0x3A | R-Type
|
| 0x0B | ldhu | 0x1B | flushda | 0x2B | ldhuio | 0x3B | flushd
|
| 0x0C | andi | 0x1C | xori | 0x2C | andhi | 0x3C | xorhi
|
| 0x0D | sth | 0x1D |
| 0x2D | sthio | 0x3D |
|
| 0x0E | bge | 0x1E | bne | 0x2E | bgeu | 0x3E |
|
| 0x0F | ldh | 0x1F |
| 0x2F | ldhio | 0x3F |
|
| opx | instruction |
| opx | instruction |
| opx | instruction |
| opx | instruction |
|---|
| 0x00 |
| 0x10 | cmplt | 0x20 | cmpeq | 0x30 | cmpltu
|
| 0x01 | eret | 0x11 |
| 0x21 |
| 0x31 | add
|
| 0x02 | roli | 0x12 | slli | 0x22 |
| 0x32 |
|
| 0x03 | rol | 0x13 | sll | 0x23 |
| 0x33 |
|
| 0x04 | flushp | 0x14 |
| 0x24 | divu | 0x34 | break
|
| 0x05 | ret | 0x15 |
| 0x25 | div | 0x35 |
|
| 0x06 | nor | 0x16 | or | 0x26 | rdctl | 0x36 | sync
|
| 0x07 | mulxuu | 0x17 | mulxsu | 0x27 | mul | 0x37 |
|
| 0x08 | cmpge | 0x18 | cmpne | 0x28 | cmpgeu | 0x38 |
|
| 0x09 | bret | 0x19 |
| 0x29 | initi | 0x39 | sub
|
| 0x0A |
| 0x1A | srli | 0x2A |
| 0x3A | srai
|
| 0x0B | ror | 0x1B | srl | 0x2B |
| 0x3B | sra
|
| 0x0C | flushi | 0x1C | nextpc | 0x2C |
| 0x3C |
|
| 0x0D | jmp | 0x1D | callr | 0x2D | trap | 0x3D |
|
| 0x0E | and | 0x1E | xor | 0x2E | wrctl | 0x3E |
|
| 0x0F |
| 0x1F | mulxss | 0x2F |
| 0x3F |
|
Maintained by John Loomis,
last updated 28 July 2008