Thanks for the suggestion :) Well i did use system builder for pin generation but for De2-115 it generates pin assignments for ADA HSMC ( which i am using in my project, but i needed pin assignments for ADA GPIO) . Eventually i had to do it the hard way by doing it manually in the assignment editor.
But now I am facing problems with the S.O.P.C builder !! I want to read/write values from the GPIO port to the SD RAM through SGDMA( Scatter Gather DMA) and display it on the touch interface. However the SOPC builder wouldn't let me read/write or connect the GPIO to the SD RAM ( read PIO interface). But the demonstration has SOPC builder built in such a way that SD RAM is accessed through the pixel FIFO( which i wont be using in my project)
So my question is how do you instantiate ADA GPIO in the SOPC builder ??? In such a way that i can read the data out from the GPIO to the SD RAM and finally display on tPad and vice-versa from SD RAM to ADA GPIO to display on an oscilloscope!! I am really confused how to do it ... I tried all possible ways but i failed :( I hope you can help me out with this since you guys have experience doing these :(