Appendix G: Writing Utilities - HP 9835A Programming Manual

236 Appendix G: Writing Utilities
It is not required that a utility actually be a subroutine. It may also be in-line code by replacing
the RET with JMP *+2. By making a section of in-line code a utility, you can make your
@ill
actions in debugging simpler. If you already know what a section does and don't want to have
to step through each instruction in that section each time
it
is encountered, you can make it into
a utility as above. Then, whenever it is encountered, the section is stepped through as if it were
a single statement.
Utilities, and calls to utilities, are not allowed in interrupt service routines (lSRs).