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Message
From: "Igor Mohor\(opencores\)" <igorm@o...>
Date: Thu, 19 Jun 2003 15:28:05 +0200
Subject: RE: [oc] verilog CAN core implementation issues
> -----Original Message-----
> From: owner-cores@o... [mailto:owner-cores@o...] On
> Behalf Of Uwe Bonnes
> Sent: Friday, June 13, 2003 5:55 PM
> To: cores@o...
> Subject: Re: [oc] verilog CAN core implementation issues
>
> >>>>> "anthonymarino" == anthonymarino <anthonymarino@i...>
writes:
>
> ...
> anthonymarino> WARNING:NgdBuild:526 - On the RAMB4_S8_S8 symbol
> anthonymarino> "i_can_bsp/i_can_fifo/fifo", the following
properties
> are
> anthonymarino> undefined: INIT_00, INIT_01, INIT_02, INIT_03,
INIT_04,
> anthonymarino> INIT_05, INIT_06, INIT_07, INIT_08, INIT_09,
INIT_0A,
> anthonymarino> INIT_0B, INIT_0C, INIT_0D, INIT_0E, INIT_0F. A
default
> anthonymarino> value of all zeroes will be used.
>
> Harmless: A warning that you didn't specified default values for the
> blockram
Function that initializes all RAMs was added to the latest version of
the CAN. All RAMs are initialized to zero.
>
> anthonymarino> ERROR:NgdBuild:604 -
> anthonymarino> logical block 'i_can_registers' with type
> anthonymarino> 'can_registers'is unexpanded. Symbol
'can_registers' is
> anthonymarino> not supported in target 'spartan2'.
>
> This looks fishy. Try to understand what the author wanted to do.
Probably
> the syntax is problematic.
Say what? Everything fully works in hardware. What problematic syntax?
Come directly to me and we'll work it out. I assume you forgot to
compile
Something?
>
> anthonymarino> WARNING:NgdBuild:454
> anthonymarino> - logical net 'set_bus_error_irq' has no load
> anthonymarino> WARNING:NgdBuild:452 - logical net 'tx_request' has
no
> anthonymarino> driver WARNING:NgdBuild:452 - logical net
> 'tx_data_4<0>'
> anthonymarino> has no driver
>
> "no driver" means that you use a signal where there is no gate that
> provides
> the output. Probably some typing error.
>
> "no load" means that some signal is generated, but never consumed.
>
> Try to understand all those issues.
You got all this warnings/errors because of the "can_registers
unexpanded" warning.
Again, come back to me with more details and we'll work it out.
Regards,
Igor
>
> Bye
> --
> Uwe Bonnes bon@e...
>
> Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
> --------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
>
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