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Vampire 600 V1: Again failure
Posted on Monday, April 30 2012 @ 18:13:28 CEST by majsta

Again I destroyed another Accelerator board. In the process of using 7.09Mhz clock from Amiga board I was making some simple changes on the board and after that Cyclone was dead. Why? I just don't have explanation to this because I haven't done anything wrong here. Maybe static electricity or maybe that i didn't used Schottky diodes for protection but they are not used in most of the designs I have seen regarding to dev boards based on Cyclone devices. But in some devices they are used for Combining JTAG and AS Configuration Schemes but as I use only JTAG for testing without any Serial Configuration Device this also doesn't make any sense. So in this case there was no problems with overheating, short circuits and anything that i could done to destroy this device but again this stupid message:
!Error: JTAG chain problem detected
!Error: No device detected

Tomorrow I ll try to repair this board or use another Cyclone FPGA. Last one that I have!


 
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