hamster Posted April 2, 2013 Report Share Posted April 2, 2013 I'm feel that I'm really close to having a frame buffer in the SDRAM using the MCB,* The MCB calibrates correctly* All writes to the 1280x720 bytes of memory complete without issue. However, all read commands seem to get stuck in the read port, and lock the memory controller up. Here's all the feedback I get from the MCB. * p3_cmd_full is asserted* p3_cmd_empty is not asserted* p3_data_empty is asserted* p3_data_count is not asserted* p3_data_overflow is not asserted I've changed my logic to only issue reads when read_cmd_empty is asserted - only one command is ever issued, and read_cmd_full is not asserted. I have also tested with fixing the read address at zeros to ensure that it isn't some addressing boundary crossing error. Does anybody have any hints? Link to comment Share on other sites More sharing options...
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