VGA controller nios

Nios® V/II Embedded Design Suite (EDS)

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VGA controller nios

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I want to add a VGA controller in the avalon bus interfacing with NIOS cpu. I am using DSP builder vrs10. My project is to capture image from CMOS. Then, do image processing on the data captured. I have tried to add the component 'Binary_VGA_Component' in the SOPC. However , I get this error.--->

<html>Error: .avalon_slave_0: Has readdatavalid but no read signal

<html>Error: .avalon_slave_0: Slave with readdatavalid signal must support at least 1 pending read

SOPC is so new to me. Can anyone help me on these? I need advice and suggestion..thanks you.

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