pixel buffer vga in de2-115

Hi, I can see that you have been filing a lot of similar enquiry in this Intel forum asking for help on your design VGA display issue. Pls don't spam the Intel forum with similar support request if possible. VGA video data transfer is typically handled by certain IP core or NIOS 2 software API function. The thing is forum user can't really help you much unless you can provide more info about your Quartus design and the NIOS function that you are trying to use and debug here. Pls don't assume people will understand your design and the functional or IP that you are using. For a start, 1) Can you tell us more about your Quartus project design ? What's insides your design and what function that your design is trying to execute here ? 2) Are you writing your own design or use some example design from Intel FPGA website ? Can you point us to the example design download path if you are using example design ? 3) What's the alt_up_video_dma_draw function in the first place ? Where do you learn about this function ? Is there any doc or design file that you can point us to ? After that, we can help you to look further. Thanks. Regards, dlim