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From: lalonde@torolab2.vnet.ibm.com (Glen Lalonde)
Newsgroups: comp.os.minix
Subject: MacMinix..
Message-ID: <52160@nigel.ee.udel.edu>
Date: 29 Apr 91 17:01:06 GMT
Sender: mmdf@ee.udel.edu
Lines: 26

Here is a re-post of my MacMinix serial port fix:

The problem is that speed gets trashed by the first ioctl call after
you set the speed. Change the last line of rs_ioctl from return(speed)
to return(speeds). I recall this being in the file rs232, but I might
be wrong about the file. With this fix you can dial in ok but still
will have trouble dialing out, that bug is still in there someplace. I
recall that was one of the fixes coming in the update. To be released
soon I hope :-)

Other fixes are to: rmaker, console(to enable linewrap at 80 cols),
keyboard(to fix up/down arrow keys), etc... I will try to post a list of
patches to MacMinix kernel files.

Regarding the question about what can one do with it, well you have the
source so have fun. I have tried a number of interesting changes, most of
which did not help much but you can learn at lot just trying.
I am looking into memory protection. Using the pmmu in the 68030 to do
memory protection so a runaway process can't trash the system. Anyone
with a 68030 mac who might be interested in helping let me know. Project
to start in 2.5 months or so. It is best to get gcc up and working
first though, as I have. This way you have a ANSI C compiler.

BTW, I know those performance hacks I talked about did not 'fit' into
the design of minix. I just wanted to try and see how they would affect
the performance. So stop telling me it is not legal.