| 0nnn |
SYS addr |
Jump to a machine code routine at nnn. |
| 00E0 |
CLS |
Clear the display. |
| 00EE |
RET |
Return from a subroutine. |
| 1nnn |
JP addr |
Jump to location nnn. |
| 2nnn |
CALL addr |
Call subroutine at nnn. |
| 3xkk |
SE Vx, byte |
Skip next instruction if Vx = kk. |
| 4xkk |
SNE Vx, byte |
Skip next instruction if Vx != kk. |
| 5xy0 |
SE Vx, Vy |
Skip next instruction if Vx = Vy. |
| 6xkk |
LD Vx, byte |
Set Vx = kk. |
| 7xkk |
ADD Vx, byte |
Set Vx = Vx + kk. |
| 8xy0 |
LD Vx, Vy |
Set Vx = Vy. |
| 8xy1 |
OR Vx, Vy |
Set Vx = Vx OR Vy. |
| 8xy2 |
AND Vx, Vy |
Set Vx = Vx AND Vy. |
| 8xy3 |
XOR Vx, Vy |
Set Vx = Vx XOR Vy. |
| 8xy4 |
ADD Vx, Vy |
Set Vx = Vx + Vy, set VF = carry. |
| 8xy5 |
SUB Vx, Vy |
Set Vx = Vx - Vy, set VF = NOT borrow. |
| 8xy6 |
SHR Vx Vy |
Set Vx = Vx SHR 1. |
| 8xy7 |
SUBN Vx, Vy |
Set Vx = Vy - Vx, set VF = NOT borrow. |
| 8xyE |
SHL Vx Vy |
Set Vx = Vx SHL 1. |
| 9xy0 |
SNE Vx, Vy |
Skip next instruction if Vx != Vy. |
| Annn |
LD I, addr |
Set I = nnn. |
| Bnnn |
JP V0, addr |
Jump to location nnn + V0. |
| Cxkk |
RND Vx, byte |
Set Vx = random byte AND kk. |
| Dxyn |
DRW Vx, Vy, nibble |
Display n-byte sprite starting at memory location I at (Vx, Vy), set VF = collision. |
| Ex9E |
SKP Vx |
Skip next instruction if key with the value of Vx is pressed. |
| ExA1 |
SKNP Vx |
Skip next instruction if key with the value of Vx is not pressed. |
| Fx07 |
LD Vx, DT |
Set Vx = delay timer value. |
| Fx0A |
LD Vx, K |
Wait for a key press, store the value of the key in Vx. |
| Fx15 |
LD DT, Vx |
Set delay timer = Vx. |
| Fx18 |
LD ST, Vx |
Set sound timer = Vx. |
| Fx1E |
ADD I, Vx |
Set I = I + Vx. |
| Fx29 |
LD F, Vx |
Set I = location of sprite for digit Vx. |
| Fx33 |
LD B, Vx |
Store BCD representation of Vx in memory locations I, I+1, and I+2. |
| Fx55 |
LD I, Vx |
Store registers V0 through Vx in memory starting at location I. |
| Fx65 |
LD Vx, I |
Read registers V0 through Vx from memory starting at location I. |