constant EXT_EXTMEM_ADDR: ext_addrid_t := x"FFFFFFB";
constant EXT_TIMER_ADDR: ext_addrid_t := x"FFFFFFC";
constant EXT_AC97_ADDR: ext_addrid_t := x"FFFFFFD";
---constant EXT_UART_ADDR: ext_addrid_t := x"FFFFFFE";
-constant EXT_UART_ADDR: ext_addrid_t := x"0000000";
+-- constant EXT_UART_ADDR: ext_addrid_t := x"FFFFFFE";
+constant EXT_UART_ADDR: ext_addrid_t := x"0000100";
constant EXT_GPMP_ADDR: ext_addrid_t := x"FFFFFFF";
component extension_gpm is