SP_UPPER_BASE_COUNT
ce4231_write(sc, SP_UPPER_BASE_COUNT, 0xff);
ce4231_write(sc, SP_UPPER_BASE_COUNT, 0xff);
ad_write(sc, SP_UPPER_BASE_COUNT, (u_char)0);
ad_write(sc, SP_UPPER_BASE_COUNT, (blksize >> 8) & 0xff);
ad_write(sc, SP_UPPER_BASE_COUNT, (blksize >> 8) & 0xff);
cs4231_write(sc, SP_UPPER_BASE_COUNT, 0xff);
cs4231_write(sc, SP_UPPER_BASE_COUNT, 0xff);