HD_ROW1_ADDR
CSR_WRITE(lcd_base, IREG, cmd_ddramset(HD_ROW1_ADDR + i));
hi = HD_ROW1_ADDR + sc->sc_vcols;
addr = HD_ROW1_ADDR + io->dat;
hd44780_ir_write(sc, en, cmd_ddramset(HD_ROW1_ADDR));