> The Mac ROM Glue stuff is disabled if you boot with serial console.  The
> feeling was that you only needed MRG for the adb access.  You'll also note
> that you get a strange time when you boot serial console, since we also
> use mrg code to access the PRAM.

Not quite.  The feeling was that if you have broken ADB support, you
should still be able to boot with a serial console.  It at least used to
be true that if your machine was unsupported, the ADB probe would wedge
the boot.  Since ADB was the only thing that used MRG once-upon-a-time,
it was sufficient to disable MRG.

Since most systems seem to be working these days, it might make sense to
remove that--or at least make it a kernel compilation-option.

-allen

-- 
              Allen Briggs - end killing - briggs@macbsd.com