Re: CPLD synthesis problem

Bryan Armstrong <bryan.armstrong-6tN4nzCoH/[email protected]>
Newsgroups gmane.comp.hardware.microcontrollers.tini
Message-ID <[email protected]>
Simon Wong wrote:
> Hi,
> 
> I'm synthesizing the CPLD code from Dallas for the 80c400. I'm getting 2
> warnings about tristated outputs from the modules "Reg8OD" and "TSBuffer8".
> I'm using webpack 6.1.03i. Anyone experiencing similar warnings?

 From AHG:

The following warnings are normal:

WARNING:Xst:1348 - Unit Reg8OD is merged (output interface has
tristates)
WARNING:Xst:1348 - Unit TSBuffer8 is merged (output interface has
tristates)

Tristate I/O often (or always) gives warnings using the Xilinx tools. If
those are the only items he noticed then he might either need pull up
resistors on any lines that need to be outputs or software help using
the DataPort class.

-- 
--
Bryan Armstrong
bryan.armstrong-6tN4nzCoH/[email protected]


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