add method
Implementation
void add(int opcode) {
var rx = _rxIndex(opcode);
registers.v[rx] += registers.v[_ryIndex(opcode)];
registers.v[0xF] = registers.v[rx] > 0xFF ? 1 : 0;
registers.v[rx] &= 0xFF;
}
void add(int opcode) {
var rx = _rxIndex(opcode);
registers.v[rx] += registers.v[_ryIndex(opcode)];
registers.v[0xF] = registers.v[rx] > 0xFF ? 1 : 0;
registers.v[rx] &= 0xFF;
}