Re: anyone know what's going on in dw780_errchk

[Brad Parker <brad%heeltoe.com@localhost>]

I seem to have my foot stuck in a gopher hole.  I'm confused about a few things.

- the hp.c driver in boot/ ignores the partition argument (making it impossible
to boot a miniroot I think).  fortunately the other drivers in boot/ (ra & mfm)
do honor the partition arg.

- if one does get a miniroot kernel to boot, the partition info is not
communicated to the new kernel.  so it thinks you booted from partition 0
('a') and uses that as root.  rather confusing.

am I correct about that?

4.3bsd sends the boot partition in r10.  It seems like using one of the
"rpb" registers (like r4) might be a better plan.  Is there any reason
not to send the boot partition info in r4?  (i.e. rpb_bootr4)

other platforms (1-2 anyway) seem to use MAKEBOOTDEV()

-brad