Altera DE1-SoC - Page 68

DE1-SoC User Manual
67
www.terasic.com
March 14, 2014
Figure 5-6 Block diagram of the SDRAM test in Nios II
The system flow is controlled by a program running in Nios II. The Nios II program writes test
patterns into the entire 64MB of SDRAM first before calling the Nios II system function,
alt_dcache_flush_all, to make sure all the data are written to the SDRAM. It then reads data from
the SDRAM for data verification. The program will show the progress in nios-terminal when
writing/reading data to/from the SDRAM. When the verification process reaches 100%, the result
will be displayed in nios-terminal.
 Design Tools
 Quartus II v13.1
 Nios II Eclipse v13.1
 Demonstration Source Code
 Quartus project directory: DE1_SoC_SDRAM_Nios_Test
 Nios II Eclipse directory: DE1_SoC_SDRAM_Nios_Test \Software
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