Honored Contributor
Honored ContributorIf anyone wants to replicate my system to check the error, then these are the details:
Development board - DE1 In SOPC builder: External Clock 50 MHz NIOS II/s processor with Hardware multiply and divide On-chip memory (RAM or ROM) - 16384 bytes JTAG UART SDRAM Controller - Presets: Custom, Datawidth 16 bits, Chip select 1, Banks 4, Address width 12x8 System ID Peripheral SD Card interface Character LCD Audio and Video Config, On-board peripherals, DE1 board, auto-initialize, Audio-in path: microphone, Audio-out: Enable DAC, Bit length 16, Sampling rate 32 kHz PIO (input) - SW[7..0] PIO (output) - LEDR[7..0] In Quartus, all pin assignments are according to the DE1 board LCD connections: LCD_data[7..0] = GPIO_0[7..0] LCD_E = GPIO_0[8] LCD_RW = GPIO_0[9] LCD_RS = GPIO_0[10] SDRAM PLL is also generated using MegaWizard Plug-in manager. All settings for this PLL are taken from the SDRAM tutorial included in the DE1 CD that came with the board. Found that same tutorial here: http://users.ece.gatech.edu/~hamblen/de1/de1_cdrom/de1_tutorials/tut_de2_sdram_verilog.pdf I hope that is all what is required. There are some minor additions/corrections as well, like assigning the SD Card pins, and selecting 'Use as regular I/O' for nCEO pins from Device and pin options. Please let me know if any of you succeeds in running this system.
