Sel_BCS
bch = Sel_BCS(fc, 1);
bch = Sel_BCS(fc, 2);
bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1);
bch = Sel_BCS(hc, 2);
bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1);
bch = Sel_BCS(hc, 2);
bch = Sel_BCS(hc, hc->hw.bswapped ? 2 : 1);
bch = Sel_BCS(hc, hc->hw.bswapped ? 1 : 2);