Re: Advice wanted on porting

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 3 Jul 1997 22:19:17 +0100 (BST)


> fry kernel hacker.. I should be buying some NeXT black hardware in the
> next few weeks so I'd be happy to be a tester.. Though I dont have enough
> time to develope.. You should conctact the maintainers of Linux m68k and
> check out the mac port on www.uk.linux.org.. (I suppose the next port wont
> be very differnt then those two)..

The 68K stuff is about the best designed portability setup anywhere in the
Linux kernel (or for that matter most other places). Of the about 9 weeks
it took me to get the first kernel booting on the MacII 7 were fighting
bugs in the binutils when building some weirder a.out format files,
and another week was bugs in the console driver.

If you have a typical 68K machine with memory mapped devices, and a frame
buffer console it really is a case of plugging things together and turning
it on. On the mac for example the architecture specific code for the console
does nothing but set up some structures and a couple of trivial callbacks
all the console drawing, scrolling, X interface is done for you.

If the bozo's at apple released hardware info it would be finished by now,
as it is Im playing hardware detective with the floppy controller and
keyboard still.

Alan
http://macintrash.cymru.net (when its up)