On 28.04.2016 14:31, Philipp Klaus Krause wrote: > I had a look at bug reports https://sourceforge.net/p/sdcc/bugs/2131/ > and https://sourceforge.net/p/sdcc/bugs/2339/ and section "3.8.4 Z80 > Interrupt Service Routines" in the manual. > > According to the manual, we have: > 1) non-interruptible isr (can be interrupted by nmi only): > void i1(void) __interrupt > 2) interruptible isr (can be interrupted by any interupt) > void i2(void) __critical __interrupt(0) > 3) nmi handler (can be interrupted by nmi only) > void i3(void) __critical __interrupt
Also, I think that the syntax for 1) and 2) should be swapped. It seems vcounter-intuitive that the one with __critical can be interrupted, but not the one without. Philipp
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