A (very incomplete) Chip-8 Emulator written in C# (+ SFML.NET).
| Status | Opcode | Description |
|---|---|---|
| 0NNN | Calls RCA 1802 program at address NNN. Not necessary for most ROMs. | |
| ✔️ | 00E0 | Clears the screen. |
| ✔️ | 00EE | Returns from a subroutine. |
| ✔️ | 1NNN | Jumps to address NNN. |
| ✔️ | 2NNN | Calls subroutine at NNN. |
| ✔️ | 3XNN | Skips the next instruction if VX equals NN. |
| ✔️ | 4XNN | Skips the next instruction if VX doesn't equal NN. |
| ✔️ | 5XY0 | Skips the next instruction if VX equals VY. |
| ✔️ | 6XNN | Sets VX to NN. |
| ✔️ | 7XNN | Adds NN to VX. |
| ✔️ | 8XY0 | Sets VX to the value of VY. |
| ✔️ | 8XY1 | Sets VX to VX or VY. |
| ✔️ | 8XY2 | Sets VX to VX and VY. |
| ✔️ | 8XY3 | Sets VX to VX xor VY. |
| ✔️ | 8XY4 | Adds VY to VX. VF is set to 1 when there's a carry |
| ✔️ | 8XY5 | VY is subtracted from VX. VF is set to 0 when there's a borrow |
| ✔️ | 8XY6 | Shifts VX right by one. VF is set to the value of the least significant bit of VX before the shift. |
| ✔️ | 8XY7 | Sets VX to VY minus VX. VF is set to 0 when there's a borrow |
| ✔️ | 8XYE | Shifts VX left by one. VF is set to the value of the most significant bit of VX before the shift. |
| ✔️ | 9XY0 | Skips the next instruction if VX doesn't equal VY. |
| ✔️ | ANNN | Sets I to the address NNN. |
| ✔️ | BNNN | Jumps to the address NNN plus V0. |
| ✔️ | CXNN | Sets VX to the result of a bitwise and operation on a random number and NN. |
| ✔️ | DXYN | Draws a sprite at coordinate (VX |
| ✔️ | EX9E | Skips the next instruction if the key stored in VX is pressed. |
| ✔️ | EXA1 | Skips the next instruction if the key stored in VX isn't pressed. |
| ✔️ | FX07 | Sets VX to the value of the delay timer. |
| ✔️ | FX0A | A key press is awaited |
| ✔️ | FX15 | Sets the delay timer to VX. |
| ✔️ | FX18 | Sets the sound timer to VX. |
| ✔️ | FX1E | Adds VX to I. |
| ✔️ | FX29 | Sets I to the location of the sprite for the character in VX. Characters 0-F (in hexadecimal) are represented by a 4x5 font. |
| ✔️ | FX33 | Stores the binary-coded decimal representation of VX |
| ✔️ | FX55 | Stores V0 to VX (including VX) in memory starting at address I. |
| ✔️ | FX65 | Fills V0 to VX (including VX) with values from memory starting at address I. |