write_mda_b
write_mda_b(MDA_CURSOR_OFF, 0x0a); /* disable cursor */
write_mda_b(from, 0x0a); /* cursor start */
write_mda_b(to, 0x0b); /* cursor end */
write_mda_b(97, 0x00); /* horizontal total */
write_mda_b(80, 0x01); /* horizontal displayed */
write_mda_b(82, 0x02); /* horizontal sync pos */
write_mda_b(15, 0x03); /* horizontal sync width */
write_mda_b(25, 0x04); /* vertical total */
write_mda_b(6, 0x05); /* vertical total adjust */
write_mda_b(25, 0x06); /* vertical displayed */
write_mda_b(25, 0x07); /* vertical sync pos */
write_mda_b(2, 0x08); /* interlace mode */
write_mda_b(13, 0x09); /* maximum scanline */
write_mda_b(12, 0x0a); /* cursor start */
write_mda_b(13, 0x0b); /* cursor end */