Manual Page Search Parameters
skgpio(4/amd64) Soekris net6501 GPIO and LEDs
skgpio(4/i386) Soekris net6501 GPIO and LEDs

SKGPIO(4) Device Drivers Manual (amd64) SKGPIO(4)

Soekris net6501 GPIO and LEDs

skgpio0 at isa? port 0x680
gpio* at skgpio?

The skgpio driver provides support for the GPIO and LEDs as implemented by the Xilinx Spartan FGPA integrated into the Soekris net6501 programmed with the default bitstream found in the BIOS.
Two standard gpio(4) interfaces are provided, one for the 16 real pins which can be configured as either inputs or outputs and another with 2 output-only pins that map to the error and ready LEDs respectively. Both may be used with gpioctl(8).

gpio(4), intro(4), isa(4), gpioctl(8)

The skgpio driver first appeared in OpenBSD 5.7.

The skgpio driver was written by Matt Dainty ⟨matt@bodgit-n-scarper.com⟩.

If the Xilinx FPGA is programmed with a different bitstream, the driver will likely not function.
October 22, 2015 OpenBSD-current