SF_PERFECT_BASE
sf_genreg_write(sc, SF_PERFECT_BASE + (slot * 0x10) + 0, reg0);
sf_genreg_write(sc, SF_PERFECT_BASE + (slot * 0x10) + 4, reg1);
sf_genreg_write(sc, SF_PERFECT_BASE + (slot * 0x10) + 8, reg2);
sf_genreg_write(sc, SF_PERFECT_BASE + i, 0);