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	/*
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	 * much of this is inspired by the freebsd driver,
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	 * but is hard to understand due to lack of documentation.
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	 *
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	 * only pci irqs 0-2 are valid.
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	 * 0 seems to yield INTR6.
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	 * pci irqs 1-2 yield spurious ether intrs.
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	 */
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	i = 0;
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	*Pciintrsts = 0;
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	*Pciintrmask = 1 << i;
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	junk = *Pciintrmask;		/* flush the write */