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Rev 4651 Rev 4652
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    /*
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    /*
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     * Current implementation of interrupt handling is non-nested mode.
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     * Current implementation of interrupt handling is non-nested mode.
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     * So we don't enable interrupt if servicing IRQ.
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     * So we don't enable interrupt if servicing IRQ.
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     * ToDo: Re-implement interrupt handling to handle nested interrupts.
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     * ToDo: Re-implement interrupt handling to handle nested interrupts.
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     */
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     */
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    if (!((ipl & 0x1b) == 0x1b))
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    if ((ipl & 0x1f) != UNDEFINED_MODE)
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        current_status_reg_control_write(ipl & ~STATUS_REG_IRQ_DISABLED_BIT);
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        current_status_reg_control_write(ipl & ~STATUS_REG_IRQ_DISABLED_BIT);
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    return ipl;
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    return ipl;
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}
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}
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