Hi folks, for more than a year now im fighting with GHDL and simulating a Xilinx DCM (digital clock manager). For a while I thought that this has to do with the simulator resolution (ps, ns, ...), but now I've seen, that other guys are simulating the DCM successfully. I've been doing some investigations/trials since ~two years, please see here:
http://www.mikrocontroller.net/topic/139345#1917475 It looks strange to me, that a 'complicated' DCM, where you have a multiplication of 1.5 to the input clock, is working successfully, but the 'more simple' approach to just double the clock isn't working. And this not only with my design but also with the DCM generated by the Xilinx wizard. And even that the DCM isn't working in GHDL, it works great in real hardware (since ~1.5 years). Is this a known problem? Is there any advice to circumvent this? Kind regards, - Bernd _______________________________________________ Ghdl-discuss mailing list [email protected] https://mail.gna.org/listinfo/ghdl-discuss
