Subject: Re: KB/Mouse/Framebuffer on 3000/600
To: Ross Harvey <ross@ghs.com>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: port-alpha
Date: 07/21/1999 11:00:01
On Wed, 21 Jul 1999 10:50:33 -0700 (PDT) 
 Ross Harvey <ross@ghs.com> wrote:

 > > 	No matter... onward we go! I've gotten conflicting information regarding
 > > the compatibility of the keyboard, mouse, and PMAG frame buffer in the
 > > 3000/600. Can someone please give me a definitive answer as to...:
 > >
 > > 	1). Are the aforementioned devices supported or not for 1.4 and up?
 > >
 > > 	2). If they are not now supported, will they be in times to come?
 > >
 > > 	3). What is the obstacle to supporting those three for X11 and/or NetBSD?
 > 
 > I'll send a later email on the status of the console. There is no X server,
 > although a NetBSD developer has reverse engineered some part of the interface.
 > Without access to the accelerations, though, I doubt if we could do a good
 > X server.

Actually, with regards to a PMAG X server, "it depends" :-)

	(1) What sort of PMAG display card do you have?  There is:

		PMAG-AA		monochrome frame buffer (simple)
		PMAG-BA		color frame buffer (simple)
		PMAG-CA		PixelStamp Graphics Accellerator (hard)
		PMAG-DA		PixelStamp 3D Graphics Accellerator (harder)

We have MI drivers for the PMAG-AA (mfb) and PMAG-BA (cfb).  These
frame buffers are very simple... no accellerators.  Frame buffer and
RAMDAC.  X servers are easy, and there is already X server code available
for them for the DECstation port.

PMAG-CA and PMAG-DA ... the DECstation port has a driver for them (px),
which is REALLY FAST in text mode :-)  There is an X server available
for them, I think, but it's not great.

        -- Jason R. Thorpe <thorpej@nas.nasa.gov>