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I am assuming that the major reason that you wanted to do this is that SPARC is big-endian. It works in the native order of TCP/IP, and the hton/ntoh macros are null at the socket level in C.

NetBSD can run Raspberry Pis big-endian. This is a much easier platform to obtain and configure than SPARC.

The targets appear to be earmv7hfeb and aarch64eb.

https://wiki.netbsd.org/ports/evbarm/

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yeah, machines of different endianness, and, ideally, different alignment requirements. Always wanted to get an alpha, as well. Had hpux / hp300 ?, sparc, sparc64, 386, x86_64, maybe another arch. This was in 2005'ish, mind you. Idea was to write code that would portably work on linux and netbsd on at least said architectures, ideally more.

I has having lunch with some hardware designers from SGI and Sun, and the SGI people mentioned jokingly that the MIPS could be both big-endian and little-endian, which they called SPIM. Then they pointed out much to the embarrassment of the Sun people (including me at the time) that the little-endian version of the SPARC would be called CRAPS.

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