| ??? 09/28/07 00:03 Read: times |
#145044 - which tools? Responding to: ???'s previous message |
Jan Waclawek said:
As far as FPGAs are concerned, we were discussing the very same topic with my "personal FPGA guru" yesterday - and he told me, that the cheap tools he is using sometimes s***w up the clock (split it to multiple branches) and this sort of circuits if fed from two different clock branches then sometimes cease to work properly. What tools? I haven't seen Brand A or Brand X's tools do bad things to clocks like that, unless I've either run out of global clock buffers or I've explicitly told the tools not to route something on a clock line. Bad descriptions can also result in weird branches, but the tools will tell you when it tries to route a clock line on non-global resources. -a |
