On Thu, 3 Apr 2014, Scott Holder wrote: > On 4/1/2014 8:23 AM, Finn Thain wrote: > > > It may be possible to boot Linux with MacOS running in 24-bit mode, > > and ISTR that this leads to a large number of memory chunks. The > > Penguin documentation says use 32-bit mode (which means installing > > Mode32 if you have old MacOS and old ROMs). The only Mac I have here > > is running MacOS 7.6 so I can't test 24-bit mode. You can see the > > debug output from Penguin below. > > I happen to have my crazy PearPC/Mac OS X-booting LC475 still up and > running with a 7.5.5 system folder on it. I rebooted it into 24-bit mode > and loading Penguin does give a warning that 32-bit mode works better. > Attempting to boot generates: > > *** Too many memory ranges!!! > Error: > *** setup_ram_mappings() failure - too many mappings
>From the Penguin source, MMU/MMU_V2.c, that means more than 32 chunks. > > I have a 64mb simm in this LC475; I tried popping it out (leaving me > with 4mb) and it actually did attempt to unpack the kernel, but there's > too little memory to do it. I have a bagful of smaller 72-pin simms > kicking around somewhere; I'll have to dig it out of the closet and try > it again. You should be able to get Penguin to list the mappings even when it doesn't have room to unpack a kernel. But there's probably no need: it seems highly likely that you'd see no 16 MB chunk on a 16 MB machine in 24-bit mode. Finn -- To unsubscribe from this list: send the line "unsubscribe linux-m68k" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
