1152x864 with a Cirrus 5426

1152x864 with a Cirrus 5426

Post by Des Herrio » Thu, 28 Apr 1994 18:51:18



Quite a few people asked me about getting 1152x900 resolutions from
a Cirrus 5426 in XFree 2.0, so I'll post an Xconfig snippet here.

                    WARNING WARNING WARNING

Use at your own risk.  If this fries your monitor, it's not my fault.

                    WARNING WARNING WARNING

This setup works with a CTX 14" NI monitor - useful figures are:
  horizontal sync:  30-38/47-50KHz (Automatic)
    vertical sync:  50-90Hz (Automatic)
  video bandwidth:  60MHz

As you may have guessed, this isn't good enough to run the X server
at 1152x900, and only just works at 1152x864.  Even then, the picture
has a very noticeable flicker.  I only worked this out to see if I
understood how the Xconfig figures work - I hardly ever actually *use*
this resolution :-)

The relevant Xconfig line is:
  "1152x864"  72     1152 1176 1424 1440    864  867  875  907

Hope this helps someone,

--
         Des Herriott,       \_   "47,000,000 dollars ?!?  
       Systems Programmer,     \_      I'M the cat!
      Micro Focus, Newbury .     \_      -- Ren Hoek

 
 
 

1152x864 with a Cirrus 5426

Post by Matthew Dill » Fri, 29 Apr 1994 02:23:15


:Quite a few people asked me about getting 1152x900 resolutions from
:a Cirrus 5426 in XFree 2.0, so I'll post an Xconfig snippet here.
:
:                    WARNING WARNING WARNING
:
:Use at your own risk.  If this fries your monitor, it's not my fault.
:
:                    WARNING WARNING WARNING
:..
:The relevant Xconfig line is:
:  "1152x864"  72     1152 1176 1424 1440    864  867  875  907
:
:         Des Herriott,       \_   "47,000,000 dollars ?!?  
:       Systems Programmer,     \_      I'M the cat!
:      Micro Focus, Newbury .     \_      -- Ren Hoek

    Here is what i use with my BOCA SVGA card and a Nanao FlexScan F550i-W
    monitor.  I tend to like 1024 across because XFree can optimize it.
    Refresh is around 61 Hz, I think.

****** WARNING WARNING WARNING ******
    Use at your own risk, horziontal frequency is over 50 KHz.  If you
    have a cheap monitor, don't even consider trying these!
****** WARNING WARNING WARNING ******

        (Cirrus)
"1024x900"    80.01  1024 1048 1296 1424      900  900  903  926

    I have another machine with an S3 card and can get around 1024x910
    out of it.  SAME WARNINGS APPLY!  I get about 53333 xstones out of the
    S3 card with a DX2/66.  Haven't run Xstones on the boca card yet.

        (S3)
"1024x900c"   74.9   1024 1050 1168 1296      910  910  917  947

--


    1005 Apollo Way
    Incline Village, NV. 89451  ham: KC6LVW (no mail drop)
    USA                         Sandel-Avery Engineering (702)831-8000
    [always include a portion of the original email in any response!]

 
 
 

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