constant EXT_IMP_ADDR: ext_addrid_t := x"0000203";
constant EXT_TIMER_ADDR: ext_addrid_t := x"0000204";
constant EXT_LCD_ADDR: ext_addrid_t := x"0000205";
+constant EXT_LCD_8_ADDR: ext_addrid_t := x"0000206";
-- dummy addressen
constant EXT_EXTMEM_ADDR: ext_addrid_t := x"FFFFFFB";
constant EXT_AC97_ADDR: ext_addrid_t := x"FFFFFFD";