Plan 9 on Sun IPC + cgthree?

[David Hogan dhog@lore.plan9.cs.su.oz.au]

Speaking of hacks to the ss confinit(), here is a patch to enable
the use of a serial console on a sparcstation which has a monitor.
The comment explains what you have to do to take advantage of it.
You probably also need to say ``setenv input-device ttya'' and
``setenv output-device ttya'' to make the boot monitor use the
serial console...

diff /sys/src/9/ss/main.c ...
321a322
> 	int montype;
332a334
> 	montype = ((uchar*)va)[0x1f];
340,343c342,345
< 	 * If we find a frame buffer, we always use it as a console
< 	 * rather than the attached terminal, if any.  This means
< 	 * if you have a frame buffer you'd better have a builtin
< 	 * keyboard, too.
---
> 	 * If we find a frame buffer, we use it as a console
> 	 * rather than the attached terminal (if any), except if
> 	 * the console is set to ttya in the nv-ram.  Type ``10 1f eeprom!''
> 	 * in new command mode to set this...
344a347
> 	if (montype != 0x10)		/* ttya */