1. The mode a machine is sometimes said to be in when it is performing a
crash and burn operation.
2. There is (or was) a more specific meaning of this term in the Amiga
community. The word fireworks described the effects of a particularly
serious crash which prevented the video pointer(s) from getting reset at
the start of the vertical blank. This caused the DAC to scroll through the
entire contents of CHIP (video or video+CPU) memory. Since each bit plane
would scroll separately this was quite a spectacular effect.
The Free On-line Dictionary of Computing (30 December 2018):