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Article #4335

Re: X11R5 server and suport for PMAGB-B

#4335
From: Peter Beyer
Date: Thu, 07 Jan 1993 14:49
28 lines
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In article <1993Jan6.095344.10635@dcs.warwick.ac.uk>, rince@dcs.warwick.ac.uk (James Bonfield) writes...
>Hello,
> 
>	I've recently compiled up X11R5 for a Decstation 5000/240. The
>original Decwindows I used was only release 4 based. However I've noticed a
>substantial performance decrease.
> 
>	Hunting around has tracked this down to the fact that X11R5 does not
>support the DEC graphics cards. The Imakefile in mit/server/ddx/dec/ws has a
>comment saying 'Only color frame buffers are currently supported'. Is this
>likely to change? There are two (currently unused) files with support for the
>PMAG boards - but they only cover PMAG_[CFD]A. Any help here?

The PMAGB-Bx also known as the HX smart framebuffer, needs special ddx code to 
get the smart part running. This code is not in the X11R5 release. In your case
it's just running as a dumb framebuffer ala CX, hence slow...

>	The only solutions I can think of are to either ignore the slowness to
>get a release 5 compatible decwindows server.

You'll have to wait until DECwindows becomes R5...

Peter Beyer 
Windows, Graphics & Multimedia
Digital Equipment b.v.
beyer@utrtsc.enet.dec.com
beyer@athena.uto.dec.com
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From: beyer@utrtsc.dec.com (Peter Beyer)
Subject: Re: X11R5 server and suport for PMAGB-B
Message-ID: <1993Jan7.092851.28710@nntpd.lkg.dec.com>
Sender: usenet@nntpd.lkg.dec.com (USENET News System)
Organization: Digital Equipment Corporation
References:   <1993Jan6.095344.10635@dcs.warwick.ac.uk>
Date: Thu, 7 Jan 1993 14:49:04 GMT
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