> >Oh, I suppose there's the strange posedge...iff... thing. > > I think maybe it was intended to express clock gating. Urrrm, no, not at all; it's clearly defined to be a synchronous enable. I think I should retract my skepticism over its usefulness, though; it can be used in event expressions in other contexts, such as clocking blocks or the clocks for assertions, where it would otherwise be troublesome to describe a synchronous clock enable. Its availability in always_ff is merely a side-effect, and not a very useful one. -- Jonathan Bromley, Consultant DOULOS - Developing Design Know-how VHDL * Verilog * SystemC * e * Perl * Tcl/Tk * Project Services Doulos Ltd. Church Hatch, 22 Market Place, Ringwood, Hampshire, BH24 1AW, UK Tel: +44 (0)1425 471223 Email: jonathan.bromley@doulos.com Fax: +44 (0)1425 471573 Web: http://www.doulos.com The contents of this message may contain personal views which are not the views of Doulos Ltd., unless specifically stated. -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.Received on Thu Feb 14 12:52:01 2008
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