hey i was given an assignment to write 3 test for a single port memory and was wondering if anyone has some good example on how to write tests and could help the memory will be copied and pasted below so if anyone with a similar code can help.

module single_port_ram (data, addr, we, clk, q);
parameter WIDTH = 16;
parameter ADDR_BITS = 4;
parameter DEPTH = 2ˆADDR_BITS;

input [WIDTH-1:0] data;
input [ADDR_BITS-1:0] addr;
input we, clk;
output [WIDTH-1:0] q;

// Declare the RAM variable
reg [WIDTH-1:0] ram [DEPTH-1:0];

// Variable to hold the registered read address
reg [ADDR_BITS-1:0] addr_reg;

always @ (posedge clk)
begin
// Write
if (we)
ram[addr] <= data;
addr_reg <= addr;
end

// Read
assign q = ram[addr_reg];

endmodule

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Think about how the device might fail and what kind of errors might be present.

Bonus question: how do you make the test fast.

 

You could start by imagining the kind of write faults that can occur -- things like "stuck ats" and shorted adjacent data lines or memory cells.

Then, think of ways you can test for those situations.

 

Think about how the device might fail and what kind of errors might be present.

Bonus question: how do you make the test fast.

Beat me to it by 5 seconds.

 

i have never written a test. Would anyone be able to give an example of a test that they have written to test memory?

 

i have never written a test. Would anyone be able to give an example of a test that they have written to test memory?

You haven't done the first part yet -- identifying potential faults.

We don't do homework here -- unless we're paid for it and we get to email directly to your professor with an explanation.

 

Ditto what Joey said. My rates start at $500/hr. Think about how the device works (look at the data sheet). Try to imagine what errors might occur. Be one with the memory. Ooom.