ID (dopc_to_id (dopc)); ASX (sreg, as, srxt_bits); ADX (dreg, a, dsxt_bits); ABW (al_bit, b);
if (a == 0 && as == 0)
REPZC (srxt_bits, dsxt_bits);
ID (dopc_to_id (dopc)); ASX (sreg, as, srxt_bits); ADX (dreg, a, dsxt_bits); ABW (al_bit, b);
if (a == 0 && as == 0)
REPZC (srxt_bits, dsxt_bits);