DE4 User Manual
109
www.terasic.com
June 20, 2018
command set. UFI is defined based on the SCSI-2 and SFF-8070i command set.
FAT File System
– The FAT file system block implements reading functions for FAT16 and FAT32
file system. Long filename is supported in this function block.
Main
– the main block contains the tasks for the application including reading the commands and
write functions to the computer.
The workflow of the main block is shown in
Figure 5–3
. The standard output of this program is
JTAG-UART. In the demo batch file, the output message will be display in nios2-terminal. When
the program detects an USB mass-storage device, it will list the files in root directory. If a file
named “test.txt” is found, the program will dump the file contents. When an HID USB-Mouse is
detected, the program will poll the mouse status continuously and display the relative information in
standard output.
In this demonstration, NIOS II uses PIO mode to access the internal memory of ISP1761. For high
throughput application, DMA implementation and interrupt can enhance data transfer rate
significantly.
Summary of Contents for ALTERA DE4
Page 1: ...DE4 User Manual 1 www terasic com June 20 2018 ...
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Page 83: ...DE4 User Manual 83 www terasic com June 20 2018 Figure 3 8 Access DDR2 SO DIMM memory ...
Page 92: ...DE4 User Manual 92 www terasic com June 20 2018 Figure 3 17 Fan Control of the DE4 ...
Page 150: ...DE4 User Manual 150 www terasic com June 20 2018 Figure 5 35 SOPC builder ...