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Thank you for your replies. The link ak6dn provided helped me a lot with finding the PIN assignments. However, there are more problems which I encountered now.
1. When I tried to test some scheme, I connected the board with USB blaster on the port JTAG (not AS), installed driver from C:/altera folder and tried to transfer my scheme but got "Failed".
https://preview.ibb.co/jC7i1d/problem.png 2. I am not sure how to use 4 SevenSegment displays which are available on the board since there are PIN assignments for only one of them.
https://image.ibb.co/iCZ5gd/7seg.png https://preview.ibb.co/df0NSJ/segled.png I see this option to select which display to use but how to use all of them at the same time?
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WRT (1), I suspect the settings of switches 1-4 in the little red dip switch pack may apply here, to set the boot/config mode you want to use. The schematic, along with the FPGA user manual, will tell you how to set the switches to use JTAG mode for configuration.
WRT (2), the four seven segment displays have been implemented in multiplexed mode, so they use only 4+7=11 total I/O lines, instead of 4*7=28 total I/O. So to use all four displays, your FPGA will have to implement the 4:1 segment multiplexing logic within your code. It is not really that hard to do. Here is a simple example using a microprocessor and C code:
http://embedded-lab.com/blog/lab-11-multiplexing-seven-segment-led-displays/ You just need to do it in verilog and/or vhdl.
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