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As far as the single FPU that you mention, the T1 is an open-source CPU. https://www.oracle.com/servers/technologies/opensparc-t1-page.html https://www.oracle.

by chasil 1y ago

As far as the single FPU that you mention, the T1 is an open-source CPU. https://www.oracle.com/servers/technologies/opensparc-t1-page.html https://www.oracle.com/servers/technologies/opensparc-t1-pag... The T2 is also open, and places an FPU in each core. https://www.oracle.com/servers/technologies/opensparc-t2-page.html https://www.oracle.com/servers/technologies/opensparc-t2-pag... When there is such complaint about closed firmware in the Raspberry Pi, and the risk of the Intel ME and other closed CPU features, I wonder why these open designs are ignored. Yes, the performance and power consumption would be poor by modern standards.

panick21_ 1y ago
These designed are not ignored. They were used for a few things here and there. But the usefulness of 'over the wall' open code without backing is always a bit limited and for processors that cost 100k to tap out, even more so. By now there are much better more modern design out-there and for RISC-V.