hello everyone, the pcb which i designed meet to a problem.that is : you know ,the bf533's address has 19 which from A1 to A19, the flash's type which i used is Am29LV160D .it has 20 address which from A0 to A19. I just use single flash ,i connect bf533's A1 to flash's A1 .the rest can be done in the same manner. A2 connect A2.....A19 connect A19. then you will can see that flash's A0 address is not connet, in fact , i connet this A0 pin to the bf533's ABE0/SDQM0 pin which i leraned from the bf533 ez kit. but i met diffcult when down load program to flash , i can't down loat program to flash. the detail is described in accessory. i want to know the problem that i met if has relation to th flash's address connection.