On Wed, 30 Oct 2024 06:59:45 Taylor R Campbell wrote: > > Date: Wed, 30 Oct 2024 04:30:44 +0900 > > From: Izumi Tsutsui <tsut...@ceres.dti.ne.jp> > > > > riastradh@ wrote: > > > Is this configuration > > > relevant for real-world hardware or is it more of a `for fun' option? > > > > The only use case is to run NetBSD/mac68k on XC68LC040 machines. > > > > It looks he "options FPU_EMULATE" for m68k doesn't handle > > XC68LC040 errata properly so most FP programs randomly dumps core > > on it (though FPU_EMULATE works on rare MC68LC040). > > n> In the real world only several Machintosh machines (LC630 etc.) > > > were shipped with XC68LC040 and users of such machines want > > softfloat, but most such geek users just replaced LC040 with 68040. > > > > I have LC630 with MC68LC040 and HP9000/382 with (replaced) XC68LC040 > > to debug FPU_EMULATE on LC040, but it has been in my deep todo list.. > > Cool, thanks for the background! > > > > Maybe we should have an m68k MKSOFTFLOAT=yes autobuild? > > > > We can do it, but IIRC there were several discussions if we provide > > softfloat m68k binaries maybe we should define a differnt MACHINE_ARCH. > > Yes, I think we need a new MACHINE_ARCH for that, maybe m68ksf. But > maybe effort is better spent on making FPU_EMULATE work than on > dealing with a new ABI.
My new computer a PowerBook 520 may have an affected cpu. The initial instability I am looking into and have a temporary fix for: https://mail-index.netbsd.org/tech-kern/2024/10/26/msg029805.html So far it's stable no crashing on "ls -lh" anymore and I can play audio. I believe that apple had a service programme back in the day that replaced affected cpus for those that requested it (but im not sure). Is there a test that I can run that would determine if my cpu is affected? Best regards, Nat
