I don't have a sense of what you mean. HP f90 is reasonably strict in not permitting gross deviations from Fortran, so you shouldn't have much difficulty with odd extensions. Many of the functions of the U77 library are present in Intel -Vaxlib. If you have non-standard code peculiar to some HP compiler from more than 15 years ago, you may have a little editing to do. If you use KAP directives, you should get warnings, but many will be ignored.
