{ this.skip(); }  break;
			case 0x5: if (this.v[x] == this.v[y]) { this.skip(); }  break;
			case 0x6: this.v[x] = nn;                               break;
			case 0x7: this.v[x] = (this.v[x] + nn) & 0xFF;          break;
			case 0x8: this.math(x, y, n);                           break;
			case 0x9: if (this.v[x] != this.v[y]) { this.skip(); }  break;
			case 0xA: this.i = nnn;                                 break;
			case 0xB: this.jump0(nnn);                              break;
			case 0xC: this.v[x] = 