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ADV7179 can not output color bar


A design with adv7179 on new zynq board. adv7179 be configed color bar,color with enable . It can not display normally, without any color information(figure1 ). But color with disable,it can display normally(figure2 ).  The same config with ADV7179 on the other spartan 6 board  ,it display normally ,no matter color with enable or disable.(figure3 ).