Re: Disk errors on PowerBook 180

On Thu, 11 Jun 2026 23:33:45 luRaichu wrote:
> On Thursday, June 11th, 2026 at 1:28 AM, Nat Sloss 
<[email protected]> wrote:
> > Just wanted to say that graphics can get much faster with support for 16
> > shades of grey or 16/256 colors on external display.
> > 
> > If you enable options GENFB_SHADOWFB graphics get a lot faster on
> > PowerBooks at the expense of a little memory.
> 
> Does this apply for other machines as well? The next computer I want to
> install NetBSD/mac68k on is a Macintosh IIcx with 64 MB RAM and an
> accelerated 24-bit color video card, the Radius PrecisionColor 8-24X.
> However it seems that card may not work, according to this snippet from
> INSTALL
> 
> > Most basic NuBus video cards (there have been some problems with some
> > 24-bit color cards and with most QuickDraw accelerators)


A lot has changed since those docuemnts were written and they sorely need to 
be updated to refect the current status of the port.

I don't know how the Mac IIcx will perform with the accelerated video card 
I've only worked on the Powerbooks (160 and 520/540c).

TinyX does support color depths from 1/4/8-32 bpp.  Improved graphics 
performance with "options GENFB_SHADOWFB" is a bit of a hit and miss some 
systems will perform better with it enabled others may not.

If for any reason you have video issues you should at least be able to 
complete the install with the built in video card or just take your external 
blue scsi witht the PowerBook install on it and try it provided you boot an 
appropriate kernel with the nubus and video drivers in it.

I am looking forward to see how well the IIcx works.

Best regards,


Nat