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Altera_Forum's avatar
Altera_Forum
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10 years ago

Custom IP problem

Hai, I am using Qsys to integrate all the custom IPs developed.I am using NiosII SBT to access the IPs. When i add a new IP to Qsys and try to access from Nios,its not working.Does anyone have t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

Hai all,

Thanks for your replies.I have removed the custom IPs and started building the Qsys with only PIO's.

Now I have added upto 45 no: of PIO's in the Qsys and generated the system.After that i have build the quartus project with the generated Qsys.

Then i used Nios SBT for debugging.During the debug for the helloworld.c program itself it get resetted.What can be the reason for the reset?

I have ensured in the hardware that the pin which is assigned as the reset pin of the nios is active high .Is there any limitation in the no: of PIO's which can be used in a Qsys? I am using Cyclone IV EP4CE22E22I7 FPGA based digital controller card for the development.If i reduce the no: of PIO's it is working fine.

Please see the attached Qsys image also.

Need help in sorting this issue....