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Article #3302

Re: video settings - SunOS 4.1.3 on SparcStation 330

#3302
From: Craig Dewick
Date: Thu, 17 Oct 1996 00:00
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In <3265FF9C.2781@compumod.com.au> Ron Cresswell <Ron.Cresswell@compumod.com.au> writes:

>Can anyone tell me how to change the video settings (i.e. refresh rate)
>on a SparcStation 330 running SunOS 4.1.3? The people that sold us a
>monitor which is being driven slightly out of spec seem to think there
>is some kind of boot option but I can't find one. And is there some kind
>of probe command that will tell me what kind of video card I have (if
>there is the possibility of a number of different cards)?

The kernel probes both the VME and the P4 buses when it starts up to 
determine what devices are present. It should report what type of frame 
buffer you have.

As far as I can tell, there's no way to change the refresh rate directly. 
The EEPROM settings don't provide a way to do it, so the only other method
could be changing a header file that's used when rebuilding the kernel,
but this is only speculation since I've never heard of this being done on
a Sun-4 kernel architecture machine. It's probably possible with certain
Sbus framebuffers, but the 4/3xx doesn't have Sbus hardware support. 

Regards,

Craig.
-- 
        Craig Dewick - craig@zeta.org.au - http://www.zeta.org.au/~craig  
            Professional Train Driver. Located in Sydney, Australia.
          Sun Ripened Kernels - http://www.zeta.org.au/~craig/srk.html
                Surplus and pre-loved Sun Microsystems equipment.
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From: craig@zeta.org.au (Craig Dewick)
Subject: Re: video settings - SunOS 4.1.3 on SparcStation 330
Date: 1996/10/17
Message-ID: <544rn3$k9t@godzilla.zeta.org.au>
X-Deja-AN: 190018486
references: <3265FF9C.2781@compumod.com.au>
organization: Kralizec Dialup Unix Sydney, +61-2-837-1183 V.32bis
newsgroups: comp.sys.sun.hardware,comp.sys.sun.admin,comp.sys.sun.misc,aus.computers.sun