Subject: Re: 3100 boot images..
To: None <bertram@gummo.bbb.sub.org, psapp@terra.cnct.com>
From: Mike Young <young@ecn.purdue.edu>
List: port-vax
Date: 01/07/1997 08:42:14
->From port-vax-owner-young=ecn.purdue.edu@NetBSD.ORG  Tue Jan  7 08:29:14 1997
->Date: Tue, 7 Jan 1997 08:30:57 -0500 (EST)
->From: Paul Apprich <psapp@terra.cnct.com>
->To: Bertram Barth <bertram@gummo.bbb.sub.org>
->cc: Karl Maftoum <karlm@blitzen.canberra.edu.au>, port-vax@NetBSD.ORG
->Subject: Re: 3100 boot images..
->MIME-Version: 1.0
->Delivered-To: port-vax@NetBSD.ORG
->
->	
->	Several months ago, someone here had written boot blocks with
->graphic console routines for the VS 2000. I tried it on the VS3100-m76spx
->and it worked. The boot blocks appeared to be working; there was no kernel
->file on the image that I received. I did receive output on the screen as
->opposed to the serial port.  I don't remember if it were Bertram, Anders,
->or Marc Malagelada, though.  Why not include that in the future kernel for
->the VS3100? 

	About a year ago, Bertram made available code to make boot blocks
that talked to the graphics console on a VS2000. They worked fine; the hangup
was when the kernel enabled memory mapping - this screwed up (as I recall)
access to the graphics I/O routines in ROM. This necessitated the redirection
of console I/O to one of the serial ports, in the kernel. (Bertram, if I
remember incorrectly, feel free to jump in and correct me :-) Neither he nor
I saw any easy way around this, so we haven't fixed it :-( 

	Also, if I remember correctly, the above-mentioned code found its
way into the 1.2 source tree, in "vax/boot".

_________________________________________________________________________
|   Mike Young     young@purdue.edu     Purdue University ECE Dept.     |
|   W. Lafayette, IN 47907-1285    http://dynamo.ecn.purdue.edu/~young/ |
_________________________________________________________________________