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![Maciej W. Rozycki](/assets/img/avatar_default.png)
On R4k DECstations the Halt button is wired to the NMI processor input rather than an ordinary interrupt input such as on R3k DECstations. This is possible with a different design of the CPU daughtercard that routes the Halt button line from the baseboard connector. Additionally the interrupt input has been reused for a different purpose on the KN04 and KN05 R4k CPU daughtercards so it is better kept masked. Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/6705/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>