26.May.2022
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Accelerator board project: 'Buffee' supports Big Endian
In her latest blog entry Renee Cousins, one of the two developers of the accelerator board 'Buffee' (amiga-news.de reported) takes up the topic of Endianness and refutes the thesis that the AM335x processor installed on the Buffee did not support Big Endian.
As Renee wrote, "big endian is working. It works for DRAM. It works with the GPMC. The only exception is that the registers need byte swapping if you’re reading/writing in 16- or 32-bit because those remain in little-endian mode. And of course, there’s the matter of making a GCC big-endian C standard library and IO programming, but knowing that this actually works means proceeding."
For testers with an Alpha or Beta board, this means that there will be a 'Buffee Swapper' that will swap the external data bus bytes. This board will be a small shim that sits between Buffee and the motherboard, allowing Buffee to run in proper big-endian mode. The swapper will be shipped free of charge to any alpha and beta tester. Future Buffee boards will not need this shim. (dr)
[News message: 26. May. 2022, 08:00] [Comments: 0]
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