On 04/24/2012 10:21 PM, Greg Ungerer wrote: > On 04/25/2012 05:22 AM, Rob Landley wrote: >> On 04/18/2012 10:25 AM, Gross, Mark wrote: >>> I'd like to see Linux fit in stuff that this too : >>> http://olimex.wordpress.com/2012/04/04/unix-on-pic32-meet-retrobsd-for-duinomite/ >>> >> >> Linux in under 2 megabytes of RAM, even when running from ROM, is not a >> realistic goal. For context: linux 0.0.1 was developed on a 4 megabyte >> system in 1991. Swap support was added in december of that year so it >> could run on a 2 megabyte system. > > For further context. The first versions of Linux on ColdFire (so > uClinux, non-MMU) I ported and put together ran in 1MB of RAM on the > Arnewsh 5206 ColdFire boards. I still have the binary images I ram > online at http://www.uclinux.org/ports/coldfire/binary.html. (So that > was around year 2000). > > That was a 2.0.38 kernel, with a serial driver and network driver > configured - and not much else. That 1MB also contained a RAM root > filesystem (ie it network loaded, didn't run from FLASH). Looking > at the image file the kernel load binary was about 305k and there > was a 75k ramdisk attached to it. > > You couldn't really do a lot in userspace - but it ran, you had a > basic shell to operate. (And all this without shared libraries :-) > > So it was once possible to have a Linux system in 1MB of RAM.
I'm impressed. Rob -- GNU/Linux isn't: Linux=GPLv2, GNU=GPLv3+, they can't share code. Either it's "mere aggregation", or a license violation. Pick one. _______________________________________________ Celinux-dev mailing list Celinux-dev@lists.celinuxforum.org https://lists.celinuxforum.org/mailman/listinfo/celinux-dev
