MCBUS(4) Device Drivers Manual (alpha) MCBUS(4)

mcbus
MCBUS system bus

mcbus* at mainbus0
mcmem* at mcbus? mid ?

The mcbus driver provides support for MCBUS system bus found on AlphaServer 4100 systems.

The following devices are supported by the mcbus driver:

mcmem
memory modules attached to the MCBUS main system bus.
mcpcia
MCPCIA MCBUS-to-PCI bus adapter

The following devices are NOT supported by the mcbus driver:

i2c
i2c bus

alpha/intro(4), alpha/mcpcia(4), mainbus(4)

Only one MCBUS bus can exist within the system.
February 17, 2017 NetBSD 9.4