re: buggy vs horrible tools A matter of degrees, I guess. They're certainly improving, but we run into bugs and missing core language features in all three ma

re: buggy vs horrible tools A matter of degrees, I guess. They're certainly improving, but we run into bugs and missing core language features in all three major vendors. I work for a consulting company, and we switch simulators and coding styles from one gig to another, so that may amplify my perception of bugginess. But just as examples, in the last couple of years, my coworkers and I have discovered: - a case where one simulator gets the xor of a two-state and a four-state logic vector wrong. - a case where another simulator converts from 4-state to 2-state value with the wrong result. - one of the simulators doesn't implement a single-precision floating point type Those are pretty fundamental bugs - not the class of bug I expect to find in a tool that has been in the wild for 5 or 6 years and costs more than my car for a single one-year license. And we've found many, many more less-blatant ones.