RE: [partial-reconfig] illegal connection

[yilu@xxxxxxxxxxxxxx]

Hi, Zijia,

I am not very sure about that.
Are you sure buffers are instantiated and used correctly in your design?

Could you show me your top level design see if I could find something?

Regards
yi lu

Quoting Ye Zijia <yezijia@xxxxxxxxxx>:

> Hi yilu,
>            i managed to remove the errors due to IOports but can you tell me
> why is there an error for output port and how to solve it?
>
> I have these declaration at the top level :
>
> FLASH_CEn : OUT STD_LOGIC;
> FLASH_OEn : OUT STD_LOGIC;
> FLASH_WEn : OUT STD_LOGIC;
> SYS_CLK_OUT : OUT STD_LOGIC;
> RAM_CLK : IN STD_LOGIC;
>
> ERROR:NgdBuild:467 - output pad net 'FLASH_OEn_OBUF' has an illegal buffer
>
> ERROR:NgdBuild:467 - output pad net 'FLASH_WEn_OBUF' has an illegal buffer
>
> ERROR:NgdBuild:467 - output pad net 'FLASH_CEn_OBUF' has an illegal buffer
>
> ERROR:NgdBuild:467 - output pad net 'SYS_CLK_OUT_OBUF' has an illegal buffer
>
> ERROR:NgdBuild:455 - logical net 'RAM_CLK_IBUF' has multiple drivers. The
>
> possible drivers causing this are:
>
> pin O on block RAM_CLK_IBUF with type IBUF,
>
> pin PAD on block fix/RAM_CLK_IBUF with type PAD
>
> Regards,
>
> Zijia
>
>
>
> 	-----Original Message-----
> 	From: owner-partial-reconfig@xxxxxxxxxxxxxx on behalf of yilu@xxxxxxxxxxxxxx
> 	Sent: Tue 1/10/2006 11:42 AM
> 	To: partial-reconfig@xxxxxxxxxxxxxx
> 	Cc:
> 	Subject: RE: [partial-reconfig] illegal connection
>
>
>
> 	Hi, Zijia,
>
> 	See this file, might be helpful.
>
> 	http://www.itee.uq.edu.au/~yilu/test_biiobuf.vhd
>
> 	Cheers,
> 	yilu
>
>
> 	Quoting Ye Zijia <yezijia@xxxxxxxxxx>:
>
> 	> Dear yilu,
> 	>               I have disabled IO insertion for the modules and have
> enabled
> 	> it at the top level too. Can u give me an example on how to instantiated
> the
> 	> iobufs and how to do the control logic ?
> 	>
> 	> Regards,
> 	>
> 	> Zijia
> 	>
> 	>
> 	>       -----Original Message-----
> 	>       From: owner-partial-reconfig@xxxxxxxxxxxxxx on behalf of
> yilu@xxxxxxxxxxxxxx
> 	>       Sent: Mon 1/9/2006 4:21 PM
> 	>       To: partial-reconfig@xxxxxxxxxxxxxx
> 	>       Cc:
> 	>       Subject: Re: [partial-reconfig] illegal connection
> 	>
> 	>
> 	>
> 	>       Hi,
> 	>
> 	>       Hope these links help.
> 	>
> 	>
>
>
http://www.itee.uq.edu.au/~listarch/partial-reconfig/archive/2005/06/msg00034.html
> 	>
> 	>
>
>
http://www.itee.uq.edu.au/~listarch/partial-reconfig/archive/2005/06/msg00035.html
> 	>
> 	>       Regards,
> 	>       yilu
> 	>
> 	>       Quoting Ye Zijia <yezijia@xxxxxxxxxx>:
> 	>
> 	>       > Hi,
> 	>       >     can anyone tell me what could be causing these errors and some
> advice
> 	> on
> 	>       > how to overcome this ? I am using ISE 6.3.
> 	>       >
> 	>       > ERROR:NgdBuild:466 - bidirect pad net 'LD_8_OBUF' has illegal
> connection.
> 	>       >
> 	>       > Possible pins causing this are:
> 	>       >
> 	>       > pin I on block LD_8_OBUF with type OBUF
> 	>       >
> 	>       > ERROR:NgdBuild:466 - bidirect pad net 'LD_9_OBUF' has illegal
> connection.
> 	>       >
> 	>       > Possible pins causing this are:
> 	>       >
> 	>       > pin I on block LD_9_OBUF with type OBUF
> 	>       >
> 	>       > ERROR:NgdBuild:466 - bidirect pad net 'LD_10_OBUF' has illegal
> connection.
> 	>       >
> 	>       > Possible pins causing this are:
> 	>       >
> 	>       > pin I on block LD_10_OBUF with type OBUF
> 	>       >
> 	>       > ERROR:NgdBuild:466 - bidirect pad net 'LD_11_OBUF' has illegal
> connection.
> 	>       >
> 	>       > Possible pins causing this are:
> 	>       >
> 	>       > pin I on block LD_11_OBUF with type OBUF
> 	>       >
> 	>       > ERROR:NgdBuild:466 - bidirect pad net 'FPGA_RESET_EN_OBUF' has
> illegal
> 	>       >
> 	>       > connection. Possible pins causing this are:
> 	>       >
> 	>       > pin I on block FPGA_RESET_EN_OBUF with type OBUF
> 	>       >
> 	>       > ERROR:NgdBuild:466 - bidirect pad net 'LD_12_OBUF' has illegal
> connection.
> 	>       >
> 	>       > Possible pins causing this are:
> 	>       >
> 	>       > pin I on block LD_12_OBUF with type OBUF
> 	>       >
> 	>       > ERROR:NgdBuild:466 - bidirect pad net 'LD_13_OBUF' has illegal
> connection.
> 	>       >
> 	>       > Possible pins causing this are:
> 	>       >
> 	>       > pin I on block LD_13_OBUF with type OBUF
> 	>       >
> 	>       >
> 	>       >
> 	>       > Thanks for all ur time !
> 	>       >
> 	>       > Regards,
> 	>       >
> 	>       > Zijia
> 	>       >
> 	>       > ___________________________
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> 	>       >
> 	>
> 	>
> 	>       Lu, Yi
> 	>       School of Info. Tech. and Elec. Eng.
> 	>       The University of Queensland
> 	>       Brisbane 4072 Australia.
> 	>
> 	>       Phone:  +61 7 33658303
> 	>       E-mail:  yilu@xxxxxxxxxxxxxx
> 	>
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