Hello Henry,
Thanks! This in fact fixed it. Simulink stopped shooting me the
errors. Can't believe this got past me! When I tried to re-run the
simulation after fixing this I got error saying that the mux (Xilinx Bus
Multiplexer) block needs to driven by an iBOB generator...not a ROACH one...
are there any alternative blocks that I could use in its place that would
also work with Roach? Or is it more likely the case that I won't be able to
complete this tutorial without the actual iBOB board?
On Mon, Aug 8, 2011 at 8:36 PM, Henry Chen <hche...@ssl.berkeley.edu> wrote:
> Hi Louis,
>
> This error means that you're trying to assign a bit position beyond
> that supported by the particular IO group. In this case, it's because
> the ROACH only has 4 user-accessible LEDs, while the IBOB has 8. So
> if you just take out the slices that are giving you trouble, it should
> be okay.
>
> Cheers,
> Henry
>
>
> On 8/8/2011 6:20 PM, Louis Dartez wrote:
>
>> Hello,
>>
>> I'm trying to get through the IBOB tutorial...just
>> to get a bunch of led's lit up. Near the end of designing the model,
>> when trying to link up 8 slices and gpio blocks i get an error. The
>> first three sets of slices and gpio's don't give me any trouble..however
>> when I get to the fourth set I get a dialogue box with the following:
>>
>> "Gateway bit index contain values that exceeds the bitwidth."
>>
>> What exactly is it that I'm doing wrong?
>> ps. This tutorial is originally meant for the iBOB ..but I'm using a
>> Roach board....I read that simply switching out iBOB:led to ROACH:led on
>> the registers should suffice...but that may incorrect.
>>
>> Thanks a bunch for the help!
>>
>> --
>> -- Louis Dartez
>> (956) 372-5812
>> Arecibo Remote Command Center Scholar
>> Center for Gravitational Wave Astronomy
>> University of Texas at Brownsville
>>
>>
--
-- Louis Dartez
(956) 372-5812
Arecibo Remote Command Center Scholar
Center for Gravitational Wave Astronomy
University of Texas at Brownsville
