01-29-2010 09:25 AM
Hi,we developed a daughter board for the DE3 board's top connector and forgot to shorten TDI and TDO together. The daughter board itself does not use JTAG. As a result the FPGA cannot be programmed while the daughter board is plugged in. My question is how the DE3 decides if a daughter board is plugged in and when to bypass the connector? Is there a solution without unplugging the daughter board? Jan
04-08-2010 11:30 AM
I can't really unplug, since i need to use signaltap with the daughterboard in use. I used to do that but its simply not an option any longer.Wierd thing is that im using alteras own daughterboard "Dual Highspeed AD DA" board, and I simply can't find any way to connect it! The only option i've found so far is getting hold of the SFF connector to disable JTAG (see attatched pic).