igs_seq_write
igs_seq_write(iot, ioh, IGS_SEQ_RESET, 0);
igs_seq_write(iot, ioh, 1, 0x01); /* 8 dot clock */
igs_seq_write(iot, ioh, 2, 0x0f); /* enable all maps */
igs_seq_write(iot, ioh, 3, 0x00); /* character generator */
igs_seq_write(iot, ioh, 4, 0x0e); /* memory mode */
igs_seq_write(iot, ioh, IGS_SEQ_RESET,