IGS_EXT_SPRITE_CTL
curctl = igs_ext_read(iot, ioh, IGS_EXT_SPRITE_CTL);
igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL,
igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL, curctl);
igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL,
igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL,
curctl = igs_ext_read(dc->dc_iot, dc->dc_ioh, IGS_EXT_SPRITE_CTL);
igs_ext_write(dc->dc_iot, dc->dc_ioh, IGS_EXT_SPRITE_CTL, curctl);
reg = igs_ext_read(iot, ioh, IGS_EXT_SPRITE_CTL);
igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL,
igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL, reg);
reg = igs_ext_read(iot, ioh, IGS_EXT_SPRITE_CTL);
igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL,
igs_ext_write(iot, ioh, IGS_EXT_SPRITE_CTL, reg);