Re: [9fans] oneko for rio

["rob pike" <rob@plan9.bell-labs.com>]

	Or, anyone want to change line 31 of
	/sys/src/cmd/rio/fsys.c to
		{ "screen",	Qscreen,	0600 ),
	and try the experiment?

It takes more than a chmod of a file to implement a driver.  /dev/screen
is provided by rio; the write interface to the underlying /dev/draw is
provided through an RPC protocol, not direct data writes, which don't
match well to the 2-d quality of the data.  /dev/screen could in principle
be writable but it will take changes to a lot more than line 31.

	The absolute mouse position would be
	determinable by adding the local position to the difference
	in LLCs of /dev/screen and /dev/window;

False.  The mouse position is always in absolute coordinates unless
the user program does extra work.

And as for the return value of main: enough already!  The subject
isn't worth all this clutter in our mailboxes.

-rob