> Just for the record, the atari uses edge-triggered interrupts, the amiga
> edge...

To be precise, both the Atari and Amiga use 68K processors, which have 7
level-sensitive autovectored interrupts and 64 edge-triggered vectored
interrupts. For the vectored interrupts, the external hardware signals the
interrupt, the 68K acknowledges it and the external hardware puts the
vector number on the data bus.

The Amiga uses an intermediary interrupt controller, to map its 15
interrupts on the 7 autovectored levels. Essentially, we consider the
Amiga's interrupts to be level-sensitive.

Valentin