INT_STATE_MOVSS
intstate & ~(INT_STATE_STI|INT_STATE_MOVSS));
(intstate & (INT_STATE_STI|INT_STATE_MOVSS)) != 0;
intstate &= ~(INT_STATE_STI|INT_STATE_MOVSS);
intstate |= INT_STATE_MOVSS;
(intstate & (INT_STATE_STI|INT_STATE_MOVSS)) != 0;