Advanced constructs in VHDL for synthesis

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Elephantus

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vhdl fileio

Hi all.

I was looking through multiple IP cores recently and I noticed that most of the cores use a very limited subset of VHDL. However, looking at synthesis tools available today, I noticed that they support quite a lot of language features including structured datatypes (records) and file I/O.

I've currently seen only one IP (LEON2 SPARC processor from Gaisler, open source) which uses records in RTL coding.

I was wondering what's the common opinion on using these features? Do you use it or not and why?
 


Are you sure File IO is supported? Which tool? AFAIK File IO is a sim-only concept. Records are great features, but under utilized due to historic "fears of synthesis tools". As you said, i see no reason to hold back on using them now.

Ajeetha, CVC
www.noveldv.com
 

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