Hi,
You can use Darrels routines with interrupt service routines written in assembly and/or BASIC. If the interrupt service routines you write are written in BASIC (PBP) you should declare them as type PBP in the INT_LIST AND you must INCLUDE ReEnterPBP.bas. If you write your interrupt service routines in assembly you declare them as Type ASM in in the INT_LIST and then ReEnterPBP file is NOT needed because you're not using ISR's written in BASIC. Anytime one or more of you ISR's are written in BASIC the ReEnterPBP file must be included, only when all handlers are in ASM can it be left out.

ON INTERRUPT is the compilers own way of handling interrupts and has nothing to do with DT_Ints. You use either ON INTERRUPT or Darrels routines.

/Henrik.