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IP35 is the CPU board in Silicon Graphics Origin 300, Origin 3000, Onyx 3000 and Tezro systems. It is the successor of the IP27 architecture of Onyx 2, Origin 200 and Origin 2000 and the last MIPS-based server architecture of Silicon Graphics. It's successor is the IA-64-based Altix series.
IP35 is not supported by Linux mostly due to lack of hardware access by the developers. Due to the close technical relation to IP27 family of machines the job would be doable.