Sigma manual Overall Structure of the DE2-70 Video Utility, Video Capturing Tool

DE2-70 User Manual

Figure 4.3. Video Capturing Tool.

4.4 Overall Structure of the DE2-70 Video Utility

The DE2-70 Video Utility is based on a NIOS II system running in the Cyclone II FPGA with the SDRAM-U2 or SSRAM. The software part is implemented in C code; the hardware part is implemented in Verilog code with SOPC builder, which makes it possible for a knowledgeable user to change the functionality of the Video Utility. The code is located inside the DE2_70_demonstrations directory on the DE2-70 System CD-ROM.

Figure 4.4 depicts the block diagram of the Video Utility. Each input/output device is controlled by the NIOS II Processor instantiated. The communication between the DE2-70 board and the host PC is via the USB Blaster link. The NIOS II processor interprets the commands sent from the PC and performs the appropriate actions.

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