eric015 Posted February 2, 2015 Report Share Posted February 2, 2015 Hi, I am new to the papilio enviro and to FPGA's ... (still expecting the 1st delivery) In good preparation of my plans with this device I studied alot opn the subject for a few weeks now and and read around in the existing forums. I started messing with VHDL in xilinx ISE .. The concept of FPGA's has attracted me much, but off course there is a lot to learn still .. I was wondering if it would be possible to used these wonderful 8 megs of SDRAM as video memory for VGA output .. ?If yes ... is it then possible to spilt it up and use the leftover as system RAM for some processor soft core (i was thinking of the 65816 because i have a past in that family) ?Or even better like putting it all in one flat address map where the soft core processor can manipulate the video memory direct random adressable ? I understand that access is limited by time slots .. but in burst modes you can do bulk transfers at high speeds .. but there must be alignment with read and write actions between the constant data refresh cycles ... I have seen the modules for testing the sdram .. but diving into that project in ISE is not a good start for beginners maybe since i did not really find a clear interface how to talk to the SDRAM controller module and translating it somehow into a flat always accesible way like the way you use SRAM.... Are there any experts who can elaborate a little more on this ? Grx.. Eric Quote Link to comment Share on other sites More sharing options...
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