> Actually, you could have NV11DIZC. Because IMO, the "Break" flag doesn't > exist. Well, I'd say that it is a matter of taste. If a BRK instruction is interrupted by an NMI or IRQ interrupt, the processor will jump to the interrupt routine and set the B flag in the status register value it pushes on the stack. Actually you should check the B flag also in the NMI routine if you want to do it in the right way. Marko
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