Hi all, I'm experimenting with some black boxed state machines to simplify some of the control logic in my designs. I thought I had it sussed, until I tried a black box with a 64 bit wide input bus. The HDL seems unable to see the top 32 bits of the input, and simulink refuses to recognise any of the black box outputs which use them.
After a bit of experimentation with a simple verilog multiplexer, it would seem that any input buses over 32 bits don't simulate properly. (Outputs over 32 bits don't seem to have this problem). I'm currently simulating within Simulink with the ISE simulator (I don't yet have a ModelSim licence), but wondered if anyone had ever come across this problem before...? Thanks folk, Jack
