+ when S_NEW_INPUT =>
+ null;
+
+ when S_NEW_BS =>
+ -- underflow check schon im history modul
+ d_spalte_next <= std_logic_vector(unsigned(d_spalte_int) - 1);
+ when S_BACK =>
+ -- einen schritt zurueck
+ command_next <= COMMAND_SET_CURSOR_COLUMN;
+ command_data_next <= x"ffffff" & '0' & std_logic_vector(unsigned(d_spalte_int));
+ when S_BLANK =>
+ command_next <= COMMAND_SET_CHAR;
+ command_data_next <= x"ffffff" & x"20"; -- white space
+