IMC(4) Device Drivers Manual (sgimips) IMC(4)

imc
Indy Memory Controller and system controller

imc0 at mainbus0 addr 0x1fa00000

The Indy Memory Controller is responsible for acting as an interface from the sgimips/gio(4) bus to the main memory and CPU. The imc is found in the Indigo R4k, Indy, Challenge S, Challenge M, and Indigo2 machines.

sgimips/gio(4)

The imc driver first appeared in NetBSD 1.6.
February 17, 2017 NetBSD 9.4