I wasn’t allowed anything more complex than a Casio FX-300ES. Even my 991ES wasn’t allowed, let alone something like a TI83/4. This (from what I’ve heard) is pretty standard in Canadian universities for calc 1-3, linear algebra, discrete, etc.
Supposed to be the same thing in the UK but no one cares. In fact most of our students (undergrad mathematics) appear to have HP Prime now which has a full CAS built in. The questions are designed to break the CAS sometimes. Try expanding (a-2b)^1000 on a calculator to get a coefficient out. It gets stuck and hoses the whole calculator.