Re: Apple Network Server 700/200 screen

Hello,

On Tue, 5 Sep 2023 17:28:32 -0400
Bradley Pearce <[email protected]> wrote:

> Hello.
> I have an Apple Network Server 700/200 which now has two versions of
> NetBSD running on it.
...
> Here's my problem:
> In O/F, I can set my input-device and output-device as kdb and screen.
> No issues with O/F, nor the bootloaders for both NetBSD 5.1 and 9.3.
> The 5.1 system will boot fully with no issue and have a normal startup
> output and eventual prompt on the computer screen, just like it
> should.
> 
> However, the 9.3 system makes the screen go "all crazy" once the
> system starts outputting on to the screen (post bootloader).  The
> system text (post bootloader) turns to a purple background and columns
> of purple lines appear on the whole screen.  It then stops outputting
> anything further on the screen.  If I change my input-device and
> output-device in O/F to ttya, it outputs a normal startup (via serial
> console on a second Macintosh).

Please post the machine's dmesg and ofctl -p output ( this will dump
the OF device tree ). I suspect we grew a driver for whatever video
chip this machine uses and get something wrong, quite possibly because
of some weirdness in OF. Early Apple OF can be ... strange.

have fun
Michael