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SSIO(4) Device Drivers Manual (hppa) SSIO(4)

ssio
National Semiconductor PC87560 Legacy IO

ssio* at pci?

The ssio driver provides support for the National Semiconductor PC87560 Legacy IO chip on systems with PA-8500 and later 64-bit CPUs. It configures the Programmable Interrupt Controllers integrated on the chip to route interrupts for the integrated ohci(4) USB controller (which appears as a separate PCI device).
OpenBSD provides support for the following devices:
com(4)
serial communications interface
lpt(4)
parallel port driver

intro(4), pci(4)

The ssio driver first appeared in OpenBSD 4.2.
July 15, 2007 OpenBSD-current