Can somebody provide a working testbench for gfmpw 1c The di open-source-silicon.dev #efabless

Can somebody provide a working testbench for gfmpw...

Gon Solo

11/13/2023, 3:49 PM

Can somebody provide a working testbench for gfmpw-1c? The directory verilog/dv is empty and using io_ports, la_test1, la_test2 or wb_port from main doesn't work.

Tim Edwards

11/14/2023, 4:26 PM

@Marwan Abbas: Where are the cocotb files for caravel-gf180mcu?

Marwan Abbas

11/14/2023, 4:28 PM

@Tim Edwards cocotb is not supported for gf180mcu

Tim Edwards

11/14/2023, 4:30 PM

@Marwan Abbas: Can you address @Gon Solo’s problem, then? Which repository should he be running verification from?

Marwan Abbas

11/14/2023, 4:30 PM

I'm working on it

👍 2

Gon Solo

11/24/2023, 2:27 PM

Is there any update on this? It's only 27 days left until the deadline on Dec 11th.

Gon Solo

12/05/2023, 8:23 AM

Nothing? The project submission requirements say "Projects should implement and pass a simulation testbench...". The testbenches from the main branch don't work, the demo project at https://repositories.efabless.com/jdicorpo/gfmpw-1_demo contains no testbenches. @Matt Venn @Tim Edwards @Marwan Abbas io_out in the user_project_wrapper is set correctly but mprj_io in the testbench is always xxxxxxxx.

Mitch Bailey

12/05/2023, 11:03 AM

@Gon Solo are you also driving

io_oeb

and have the

user_defines.v

set correctly?

Gon Solo

12/05/2023, 2:14 PM

io_oeb

is driven and

user_defines.v

looks like this: ``define USER_CONFIG_GPIO_5_INIT

GPIO_MODE_USER_STD_OUTPUT

...

Gon Solo

12/05/2023, 2:26 PM

The point is, I usually follow an existing testbench and apply changes very carefully. I just can't find a working testbench for gfmpw-1; in the template there is none, in the demo is none, I also tried some other submissions, and either there is no testbench or it's not working.

Mitch Bailey

12/05/2023, 2:40 PM

io_oeb

is low, right? You might be able to look at the working sky130 test bench and modify it for gfmpw-1.

Gon Solo

12/05/2023, 2:46 PM

I tried both combinations:

Copy code

assign io_oeb = 16'hFFFF;
//assign io_oeb = 16'h0000;
assign io_out = 16'hFFFF;

Gon Solo

12/05/2023, 2:48 PM

I tried several working sky130 test benches. Nothing worked.

Mitch Bailey

12/05/2023, 2:48 PM

io_oeb

low enables

io_out

io_oeb

disables

io_out

Gon Solo

12/05/2023, 2:49 PM

Like I said; I tried both combinations. By also commenting the first line above and uncommenting the second.

Mitch Bailey

12/05/2023, 2:51 PM

I think we might have to wait for @Marwan Abbas to solve this. I believe he’s working on it.

Gon Solo

12/05/2023, 2:57 PM

Ok, but my hope is dwindling; I asked 22 days ago, and it's only 6 days left. 😞

Gon Solo

12/05/2023, 3:16 PM

But thanks, @Mitch Bailey!

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