Re: mgfour question

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#3163

From: Craig Dewick
Date: Tue, 27 May 1997 00:00

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In <5mbjth$qgn$1@news.ececs.uc.edu> david@pohl.ececs.uc.edu (David Bliss) writes:

>I've got a 4/330 with a mgfour video board, and am trying to use it with
>the 365-1401-01 19" b&w sun monitor I've got on my 4/260.  According to
>the hardware FAQ, the bwtwo and the mono port of the mgfour both are
>ecl/ttl at 1152x900, 66hz vertical and 61.8khz horizontal, but when I
>hook the monitor to the mgfour it fails to sync on bootup.  Is there
>a PROM or jumper setting I need to change to get this to work?

The problem you're having is a result of the 4/2xx mono framebuffer being
a hi-res (1600 x 1280) one instead of a lo-res (1152 x 900) one. Your mono
monitor is a hi-res monitor, so it won't work with lo-res mono video
signals. 

The only P4-bus ECL mono framebuffers I have experience with are the
501-1402 and the 501-1247. AFAIK, the -1402 doesn't support hi-res mode,
and while the -1247 does (jumper selectable), I've never got it to work in
anything other than a 4/110. 8-) 

Regards,

Craig.

-- 
          Sun Ripened Kernels - http://www.zeta.org.au/~craig/srk.html
                Surplus and pre-loved Sun Microsystems equipment.
                     Based in Sydney, Australia. Operated by
        Craig Dewick - craig@zeta.org.au - http://www.zeta.org.au/~craig

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From: craig@zeta.org.au (Craig Dewick)
Subject: Re: mgfour question
Date: 1997/05/27
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