MAINBUS(4) Device Drivers Manual (evbppc) MAINBUS(4)

mainbus
Processor bus support

cpc0 at mainbus0
cs0 at mainbus0 addr 0x7fe00000
rtc0 at mainbus0 addr 0x7ff00000

The mainbus provides support for the processor bus on the Artesyn PM/PPC.

cs(4), evbppc/cpc(4), evbppc/rtc(4)

The mainbus driver appeared in NetBSD 2.0.
February 17, 2017 NetBSD 9.4