MAX10/DE10-Lite board : SDRAM(64MB) problem downloading elf-file

Hi All,

I am using the DE10-Lite board with Quartus version 16.1. My application is running without any

problems on a DE1 board (8MB SDRAM), on a DE0-Nano board(16MB SDRAM) and on a BeMicro CV board

which is no longer available, so I decided to use the DE10-Lite board.

I have created a minimal configuration to narrow the problem. Enclosed, please find the

Qsys file. If necessary, I can provide the whole project as zip-file.

The program is running without any problems if only the onchip_memory is used, see 1).

The problem occurs if using the SDRAM only.

******************************************************************

1) ok, using onchip_memory

Downloading 01000000 ( 0%)

Downloading 01010628 (95%)

Downloaded 66KB in 1.1s (60.0KB/s)

Verifying 01000000 ( 0%)

Verifying 01010628 (95%)

Verified OK

Starting processor at address 0x01000230

*****************************************************************

2) ERROR , using SDRAM

Downloading 04000000 ( 0%)

Downloading 040105B4 (95%)

Downloaded 66KB in 1.1s (60.0KB/s)

Verifying 04000000 ( 0%)

Verify failed between address 0x4000000 and 0x400FA63

Leaving target processor paused

******************************************************************

I already tried different possibilities to solve the problem and followed also the hints

and examples in the DE10-Lite_v.2.0.0_SystemCD but without success. I also tried to use

the Nios II (Classic) -E Processor with external PLL : same problem. I am using the

Single Uncompressed Image (3584Kbits UFM) Device option. At the moment, I am only able to

start the program from the onchip_memory, so I tried to get access to my data which is

based on a 48 MB union by changing via NiosII-BSP Editor the mapping from the .rwdata to

the SDRAM. Unfortunately I have no experience how to do that correctly and I did run in

a lot of other problems, probably my fault. It would be nice if someone can help me.

In general, however, it only makes sense if the SDRAM is working correctly and I

suspect that the problem is based in the RESET timing ?

Every reference is welcome. Many thanks in advance, Reinhard