Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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Quartus 2 Chain debugger

Altera_Forum
Honored Contributor II
‎12-05-2013 02:51 PM
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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 Hans
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Altera_Forum
Honored Contributor II
‎12-13-2013 01:37 PM
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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
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