El 19/08/2011, a las 09:55, François Revol escribió: > Le 19/08/2011 04:14, Natalia Portillo a écrit : >> Hi, >> > > [...] > (no need to quote the full thread!) > >>>> >>>> He worked on emulating an abandoned, strange, difficult to get, and >>>> undocumented hardware, using your 111 patches, and finished it before the >>>> wholy more experienced MESS team. >>> >>> The next-cube emulation is really working ? >> >> Yes, it is, absolutely. > > Cool I need to add this target to my Haiku port... where are the docs for the > boot process ?
NetBSD sources :D > >>>>>> Why are you planning to port a hack instead of making a full machine >>>>>> emulation? >>>>> >>>>> Because I'm lazy and dumb: the work is already done, I like cut'n'paste. >>>> >>>> Yeah, you said it! >>>> The work is already done, we have all the hardware emulation that Basilisk >>>> substitutes for hacks. >>> >>> I'm not sure of that... no MMU emulation, no Nubus, no ethernet card, no >>> video card, no SWIM, no SCSI, ... useless with a patched ROM. >> >> Macs do not have videocards :p, only the Mac II and we're not forced to >> emulate that one. >> SWIM is a piece of cake that can be even implemented without ICs, just some >> logical arrays. >> NuBus is not required for almost anything, only the video card uses it, and >> it's present only on the Mac II, a stub will suffice to make Toolbox be >> happy. >> Most m68k didn't include a network card, third party ones are stock chips >> (probably almost all are NE2000, 3COM and PCNET), and Apple integrated ones >> are also stock, easy to do :p > > NIC isn't really necessary at first, those things don't netboot anyway, do > they ? AFAIK, none of them did until PowerPC, and that was OpenFirmware. >> The MMU is your part I won't discuss on it. > > There is 040 mmu support in ARAnyM (Atari Running on Any Machine), enough to > run Linux, that has been backported to UAE (ARAnyM is based on the UAE core), > that should give some hints: > http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=201442 > http://www.amigaemulator.org/patches > http://www.amigaemulator.org/bin/patches/mmu/uae-0.8.20.2-mmu.diff.gz > (though I fixed a bug in handling TTR1 in ARAnyM) > > It's why I chose to go Falcon first and use ARAnyM for the 68k Haiku port. > > The 030 or 68551 ones are much more complex though (the 040 one has a fixed > table layout, others have fully configurable table size for all the 4 > levels). The 060 one is just the 040 with some cache restrictions. > >> I know it's not perfect, but right now, it's better than nothing. >> There is no 68k cpu emulation complete afaik, I discussed with Ray >> Arachelian a lot on that when he was working on LisaEm. >> However emulators are live, Aranym, UAE, LisaEm, BasiliskII. >> >> qemu-m68k is quite complete to go live (when it does not break mcoldfire) >> right now. >> Bugs are easy to be corrected by more people when they are in main than in a >> developer's own clone. >> >> Leave your little kid go wild, it's old and big enough :p > > Release early, release often :p +1 > François.
