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APLMBOX(4) Device Drivers Manual (arm64) APLMBOX(4)

aplmboxApple IOP mailboxes

aplmbox* at fdt?

The aplmbox driver handles communication with various coprocessors integrated on Apple SoCs.


The aplmbox driver first appeared in OpenBSD 7.1.

The aplmbox driver was written by Mark Kettenis <>.

December 19, 2021 OpenBSD-current