Re: [myhdl-list] Weird error

[Merkourios K. <mer...@gm...>]

Hallo Nicolas,

Thanks for the reply.You are right it should be "q.next=signal_list[n]". 
I have corrected it after I have sent the email.


Best regards,
Merk

On 18/01/2016 01:07 μμ, Nicolas Pinault wrote:
> Le 16/01/2016 12:55, Merkourios Katsimpris a écrit :
>> Hallo guys,
>>
>> I tried to run this code:
>>
>> def dff(q,d,clk,rst):
>>
>>         @always(clk.posedge,rst.posedge)
>>         def logic():
>>               if rst==1:
>>                     q.next=0
>>               else:
>>                     q.next=d
>>
>>         return logic
>>
>>
>> def param_reg(q,d,clk,rst,width=4,n=2):
>>
>>        signal_list=[Signal(intbv(0)[width+1:]) for i in range(n+1)]
>>        instance_list=[dff(signal_list[i+1],signal_list[i],clk,rst) for i
>> in range(n)]
>>
>>        @always_comb
>>        def logic():
>>             signal_list[0].next=d
>>             q.next=signal_list[n+1]
>>
>>        return logic,instance_list
>>
>>
>> but I get the following error:AlwaysCombError: signal (signal_list) used
>> as inout in always_comb function argument
>>
>> when i change the code of param_reg to :
>>
>> def param_reg(q,d,clk,rst,width=4,n=2):
>>
>>        signal_list=[Signal(intbv(0)[width+1:]) for i in range(n+1)]
>>        instance_list=[dff(signal_list[i+1],signal_list[i],clk,rst) for i
>> in range(n)]
>>
>>        @always_comb
>>        def logic():
>>             signal_list[0].next=d
>>        @always_comb
>>        def logic2():
>>             q.next=signal_list[n+1]
>>
>>        return logic,instance_list,logic2
>>
>> It works fine. Do you know whats the problem?
> Looks like a bug. I reproduced it with latest version from github.
> However, be careful that  "q.next=signal_list[n+1]" is not correct. It 
> should be "q.next=signal_list[n]".
>
> regards,
> Nicolas
>> Thanks
>>
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>
>
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