Edwin Blink wrote: > Do you also have excact (pulse length) timings of interupt durations ?
Frame, Line and MIDI Out interrupts all last 128 tstates (MIDI In is likely to be the same, but untested). Both frame and line interrupts begin at the start of the right border area. I don't have anything in any more detail, but the tstate resolution covers how it affects the running system. Si

