Addendum:

> Their PPC4xx core license(s) will be good for several years to come during which
> they'll have manufactured and sell their recent PPC chips and maybe future
> dual-ISA (PPC+ARM) chips.

Summary of the current status of Power Architecture at Applied Micro:

"We continue to market our processor products based on Power Architecture. Developed by IBM, Power Architecture is the leading standard computing platform within the communications market for high-performance embedded systems. Many of our customers' products require embedded computing solutions for managing control plane and data plane functionality. Our products combine the embedded central processing unit ("CPU") with peripheral functionality to create optimum solutions for applications such as wireless access points, residential gateways, wireless base-stations, storage controllers, network attached storage, network switches and routing products, and multi-function printers. Products based on Power Architecture are broadly deployed and continue to be designed into major telecommunications, consumer, and networking equipment. Our PACKETpro family leverages the general purpose embedded computing capabilities of Power Architecture in combination with technologies derived from our portfolio of traffic management and packet computing products to create solutions that are ideally suited for converged Internet Protocol-based networks. As part of our SLIMpro PowerPC ISA product offering, we developed an asymmetric multiprocessing architecture that combines the ARM 32-bit and PowerPC 32-bit cores. This combination has enabled enhanced features for security, power management and offload capabilities. [...] We are one of the leading suppliers of embedded processors and SoCs. Our embedded processors are widely deployed in a variety of critical applications in target markets such as wireless LAN, residential, data centers and enterprise. In networking equipment such as edge, core and enterprise routers, our embedded processors handle overall system maintenance and management functions. Versions of our processors are also targeted at large opportunities in RAID storage processing, multi-function printers and a variety of other embedded applications. In wireless LAN applications, our embedded processors are installed in a significant share of all enterprise class access points shipped worldwide. Our existing products utilize IBM's Power Architecture processor cores in various speed grades. These cores are integrated with various peripheral functionality to create specialized SoC product solutions. In fiscal 2012, we introduced the APM8669x “Black Mamba”, the highest performance member of our second generation of PACKETpro embedded processors. While PACKETpro is our second-generation of embedded processors, it is the first to feature offload acceleration of critical features at performance levels up to 1.3 GHz. The innovative subsystem design features the Scalable Lightweight Intelligent Management processor, or SLIMpro, to enable breakthrough flexibility in power management, protected asymmetrical multi-processing, failover protection, resiliency and end-to-end security for a wide range of mission-critical applications in wireless and wired networking, multi-function printer, industrial, network-attached storage, consumer and enterprise access point markets. Additional members of the PACKETpro family include “Green Mamba,” “Diamond Back”, “Keelback”, and “Catalina.” Our current embedded processor customers include Brocade, Cisco, Ericsson, Fujitsu, Hewlett-Packard, Kyocera, Netgear, Q-Logic, Toshiba TEC and Western Digital."
http://www.sec.gov/Archives/edgar/data/711065/000144530513001456/amcc0331201310-k.htm