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I have a chain with 3 bs devices : 1 EP3SE200
2 EP3SE260 3 VSC82244 If i am in Quartus II programmer debug mode this chain is correct seen, all device id's are seen. Also with our boundary scan test (jtagtooling there's no problem with this chain. But if I am in the Quartus II programmer and try "auto detect" nothing is seen, this message appears : "Can't scan JTAG chain" Also adding the devices manualy does not work, a "fail" appears. Any idea ??? Thanks HansLink Copied
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The problem was(is) the VSC8244, to bypass the device according 1149.1 must be 1111 . The VSC8244 is ONLY: 0111.
Quartus wants to put the device in Bypass during programming and uses 1111. This was causing the programming problem. Hans![](/skins/images/54BF544B471F3F61DFD338F1D58F9426/responsive_peak/images/icon_anonymous_message.png)
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