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Conference wrksys::alphastation

Title:Alpha Workstation Conference
Notice:See note 1.* for conference notices
Moderator:WRKSYS::HOUSE
Created:Wed Sep 07 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1996
Total number of notes:9122

1862.0. "Higher resolution with SRM console ?" by NETRIX::"[email protected]" (Hans Donauer) Fri Feb 21 1997 07:53

Hi!

Problem with a high resolution BARCO Monitor, not displaying
in consolemode (when VMS is up and running, display is o.k):

Customer is using  Alphastations 500, PBXGB-CA Powerstorm graphic
and BARCO 651 "rugged colour display". This special Monitor is needed
because is sustains 30g shock, 90% humidity ... (you can play football with
this thing), and it is capable of displaying 1200x1600 resolution.

The specs from the monitor say the horizontal frequency is between
47 and 94 KHz

As I know, all Alphastions display in consolemode with 640 x 480 at 60Hz
-> therefore we have a horizontal refreshrate of 32 KHz
This is below the range of the monitor, the display is out of sync until
VMS is up.

Is there any way to switch to a higher resolution in consolmode ?
I have no other way (like console on serial port), because the system
is built into a shelter with no more space for a consolterminal.

I hope there is any chance, because the customer spent many, many $s
for having the best solution ....

Hans Donauer
Salzburg/Austria

[Posted by WWW Notes gateway]
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1862.1STAR::KLEINSORGEFrederick KleinsorgeFri Feb 21 1997 08:497
    Is it possible?  Sure, but it would take special console logic, and
    special driver logic.  Taking the next step, how do you convince the
    firmware group, and the driver maintainer (what is the PBXGB-CA?  A
    TGA2?) to make the changes needed, for a monitor they don't have, or
    support.  Maybe this is a CSS job?  (Do we still have a CSS?)
    
    
1862.2Considered A Serial Console?XDELTA::HOFFMANSteve, OpenVMS EngineeringFri Feb 21 1997 09:125
   Has the customer considered `aiming' the console out the serial port?
   One could use an LCD panel or ruggedized terminal -- years back, there
   was a hand-held terminal used by field service -- as the console.

1862.3yepWRKSYS::DISCHLERI don't wanna wait in vainFri Feb 21 1997 09:542
    	I agree with Steve.   set console serial  and drive 
    	some other screen device.
1862.4sold from DEC ...NETRIX::"[email protected]"Hans DonauerFri Feb 21 1997 10:0722
to .1:
The PBXGB-CA ist the Digital Powerstorm 4D20, TGA2. 
I would agree, its not our job, but the problem is :
The very good and very expensive (48 K$) Monitors were sold
from Digital sales, without checking the low resolutions.

So the customer spent some extra $s to buy also the Monitors from Digital,
for not to run in such problems.
Now the customer insists on what he payed for.

I don�t know the amount of work this means, but i thought of a console-
parameter like " set console VGA / set console SVGA"

The monitor is Multisync, it would work with every resolution greater then
640x480.

to .2:
the customer is not very cooperativ ....


  Hans
[Posted by WWW Notes gateway]
1862.5STAR::KLEINSORGEFrederick KleinsorgeFri Feb 21 1997 10:1814
    The console calls the BIOS emulator to set the text mode when in
    console mode.  It's not clear to me how much work it is, or if the
    Cirrus graphics chip on the controller supports a higher-res text
    mode at 80x25.  Now, it's always possible to run the card in graphics
    mode (no VGA), like the TGA.  However, that is 180� from the direction
    that graphics and console is headed (that is, explicit console logic
    for specific hardware).
    
    At the device driver level, the WS group would also need to modify
    their code to make the runtime console run at another resolution.  I've
    done this on the Alphabook (which had to run in 800x600 pixel mode), so
    it's possible, but again - it's extra work that I'm sure isn't
    budgeted by the WS group.
    
1862.6consoles are ALWAYS VGAWRKSYS::SCHUMANNFri Feb 21 1997 10:599
>> I don�t know the amount of work this means, but i thought of a console-
>> parameter like " set console VGA / set console SVGA"

How do you set it when you can't see the picture???

This dilemma is the reason why there is one and only one and exactly one
console display standard in the PC industry.

--RS
1862.7I've got a similar problemBBPBV1::WALLACEjohn wallace @ bbp. +44 860 675093Sat Feb 22 1997 07:5615
    The ZLXp-E1 (TGA 1) had some switches which console code acted upon in
    every case I can remember seeing.
    
    There's no equivalent switches on the TGA2, presumably, given that it
    has a builtin VGA chip? 
    
    I have a horrible feeling a customer of mine is about to discover this
    problem too (BARCO monitor, won't sync in console mode, OK once OS is
    up).
    
    What would be the implications of using good ole ZLXp-E* instead of
    trendy new stuff ?
    
    regards
    john
1862.8STAR::KLEINSORGEFrederick KleinsorgeMon Feb 24 1997 09:4536
    I would ammend your proclamation to say "All new, Digital supported
    graphics cards now come with a VGA for console use".
    
    It's only a recent development here at DEC that there is a "standard"
    console.  The history of the console is that custom firmware and O/S
    software was needed for each graphics device.  The ZLXp-E* was the last
    of this breed (or until we change our minds again).
    
    The ZLXp-E* used system embedded firmware to drive the dumb frame
    buffer logic that was used for the device (there is no VGA).  And the
    switches were read by FW to set the default resolution for the card.
    
    If I were to try and design a solution to the problem (and mind you, I
    don't think you are going to convince anybody to solve the problem),
    I would have the console do something like:
    
    	 Console == Graphics?
    	 - Yes:
    	   Any VGA found?
    	   - No:
    	     Any "known" non-VGA devices found (TGA, TGA2, etc)?
    	     - Yes:
    	       Use embedded high-res dumb frame buffer console logic.
    	     - No:
    	       Fail over to serial console.
    	   - Yes:
    	       Use VGA as console.
    	 - No:
           Use serial console.
    
    The TGA2 can be supported using 95% of the same logic as the TGA in
    dumb frame buffer mode, with maybe a little change in the init logic.
    To use the TGA2 in dumb frame buffer mode, at a higher res, you would
    disable the VGA (jumper).
    
    
1862.9not so easy..NETRIX::"[email protected]"Hans DonauerTue Feb 25 1997 03:2818
Thank You for all the replies.

Frederick: When i see this right, its not only the consolcode, but also the
OS driver and much work on both ends.

So can You give me the names for the right persons to contact for
both sides, to check for practicability offline.

Thank You 

Hans 

VAXmail   VNABRW::DONAUER_H
Exchange  [email protected] 


 
[Posted by WWW Notes gateway]
1862.10STAR::KLEINSORGEFrederick KleinsorgeTue Feb 25 1997 08:4510
    
    As there is no "console" group in the workstation organization, I can
    only suggest contacting the product manager (Keith Bellamy?), or
    someone in engineering management like Fred Roemer.
    
    The O/S driver and the console code are both owned by the workstation
    organization for the TGA2.  The engineering manager for the driver is
    Dick Coulter.