Cyclone III + SRAM

[Altera_Forum]

Dear all 

I have designed a custom board using EP3C16 and 2 IS61WV25616BLL srams. Now I want to test if they are working correctly, are they soldered properly...how I can perform the test?   Thanks in advance for your advice.

[Altera_Forum]

Hi,  

 if you have access to such tools, I think it's possible to use a boundary scan.  Otherwise, I suggest that you implement a small design that performs a read/write test to the SRAMs.

[Altera_Forum]

a correct and fast test for short circuits or non existing connections to external memory devices is the walking 1's & 0's test performed with adr and data bus. 

 this test is easily coded in C and Nios-II s could do that

[Altera_Forum]

You can directly compile the memory test example in the IDE. It will do the walking 1's & 0's and other simple tests on the way.

[Altera_Forum]

Dear all 

I'm new in fpga designs. can you direct me to a tutorial on performing the test.   thanks in advance.

[Altera_Forum]

Guys did you mean the memory test from nios II IDE? 

I have only these srams on board and no other memory except M25P16 is available. But when I compile the memory tester it said program size is about 53KB and I cannot instantiate more than 32K internal ram. So is there any way around?  

[Altera_Forum]

Try to compile with -O2 (or use the 'Release' build instead of the 'Debug' build) and use the reduced C drivers. It should fit after that.