2 Mbyte L1-4 cache

Modifies the 16-channel unmanaged Neural Engine modem to work in managed mode with 2 MB subprocessor caches per core. Adds an L4 cache to work as a router. Allows you to make your iMac21,1 as the boundary router of the autonomous system for communication with other autonomous systems. Packs the final set of 10k MAC-address MIB in 2 MB resulting.