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PCONS(4) Device Drivers Manual (sparc64) PCONS(4)

pconsSPARC64 PROM console interface

pcons0 at mainbus0
wsdisplay* at pcons?

The pcons device provides a simple text console, using the PROM services for input and/or output if no other driver handles this task. It will use the PROM console devices set via the “input-device” and “output-device” variables.

This driver is provided as a fallback console mechanism if the real console hardware cannot be driven in OpenBSD.

/dev/console
 

intro(4), tty(4)

OpenBSD support for the PROM console first appeared in OpenBSD 3.0.

If pcons handles console input, the PROM will handle break (or Stop-A) sequences before pcons. The preferred way to enter ddb(4) on a ddb-enabled pcons console is then to enter the following sequence : ‘+++++’

November 1, 2015 OpenBSD-7.0