Honored Contributor
Honored ContributorHello Frank,
My posts may be too long, but I belive I stated that the first part programed around 3 dozen times, then it failed, just around the time that I included the UFM portion into the design (parralell flash via the Quartus Megafunction). Then I replaced the part, and it programed only 3 times, then it failed on the forth time. Yes, it may be the specific board, or may not. I will know soon because the second prototype is almost completed. We have the most competent and highly experienced techs, as well as all the proper gear, soldering tools, microscope, name it. We checked and rechecked... It should not be so difficult, only 144 pins and 4 traces, clean power, pull up and down resistors as recomanded by Altera for MAX II... I just do not get it. A SECOND device also can be recognized and fullty erased (no errors). Then I found out that the second device device can be programed into the CFM (no errors) but the UFM does not verify (I assume the first device would have done the same). I can include UFM circuitry or not, it does not matter. If I check the UFM verify, the error is there. If I do not check UFM verify and/or program, there is no error. So my UFM is "broken", and if I can not fix it, I will go for an external EPROM. That is a new layout, but I may have no choice. Too bad. I like Altera a lot, it is my first problem with it, and I am trying to use the user flash memory feature, but at that rate I am considering giving up the feature. Thanks again for staying with me so long. I do appreciate it. Regards Dan
