Re: Intermediate step for new arch for lc040 compatibility
Romain Dolbeau <[email protected]> Sun, 4 May 2025 12:10:07 +0200
| Newsgroups | gmane.os.netbsd.ports.m68k |
|---|---|
| Message-ID | <CADuzgbq-u3Q2qnPicaiD_J3B8tG2Pnu-GaYkNCY+RX2TyZh1ug@mail.gmail.com> |
Le sam. 3 mai 2025 à 18:13, Michael van Elst <[email protected]> a écrit : > It's '881/'882 and we provide the FPSP for running on 040/060. OK, thank you! I wonder how many of the "removed" instructions actually appear in the NetBSD distribution (the full base system, excluding pkgsrc). I don't remember ever seeing a numerical code actually using things like hyperbolic trigonometry, and even regular trigonometry is not that common compared to square roots, divisions and exponentials/logarithms. (I am curious as I've actually started drafting a FPGA-based FPU for the '020/'030 <https://github.com/MelkhiorVintageComputing/IIsiFPGA/blob/master/IIsi-to-ztex-gateware/rd68883.py> using FloPoCo <https://www.flopoco.org/> for the operators, but i'm only targeting the '040 subset as that's already pretty complex... computing is easy [for standard operators], exceptions/flags/... are hard!). Cordially, -- Romain Dolbeau