Disk errors on PowerBook 180

[Nat Sloss <nathanialsloss%yahoo.com.au@localhost>]

Hi,

The problem is that the standard SBC kernels for mac68k will use PDMA for 
reading/writing to hdd and Powerbooks need either SBC_INTR flag 0x2 added to 
sbc* in there kernel config or to use the slower polled mode.

Many improvents were made in NetBSD-11 for Powerbook 1xx machines.  (Audio 
recording/playback/ Battery montoring via envsys/ Screen brightness control 
support and DaynaPORT network suppot which works great with the bluescsi v2 
and similar or PiSCSI/rascsi).

There were also changes to sbc in particular setting the right and faster 
default for scsi transfers on the PB 1xx and better handing of aborting 
transfers which is need for the dse(4) daynaPORT driver as it only works with 
polled scsi transfers.


Not sure if all of these changes made it into -11 but are definately in -
current if you use a kernel from one of the daily builds it will work great.

Also if you have 10mb or more ram it is possible to run a smaller X11 server 
(x11/tinyx-wscons) which will start a full Xsession on the Powerbook (mine is 
a PB160 25Mhz 14mb system) in 5minutes or so provided you reduce the number of 
fonts in /usr/X11/lib/fonts - I moved /usr/X11/lib/fonts/75dpi out of the 
fonts directory and rerun fc cache).


Please try a current kernel and report back.  I will attempt to fix any issues.


Best regards,

Nat