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Annotation of 43BSDTahoe/new/X/man/man8/Xqvss.0, revision 1.1

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        !             4: XQVSS(8)           UNIX Programmer's Manual             XQVSS(8)
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        !             8: NAME
        !             9:      Xqvss - X window system QVSS implementation notes
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        !            11: DESCRIPTION
        !            12:      The QVSS hardware in the DEC VS1 and VS2 is monochrome.  The
        !            13:      usable size is 864 lines by 960 pixels/line.  (Future driver
        !            14:      mods will default to 1024 pixels/line on the VR260 monitor
        !            15:      of the VS2, in Ultrix 1.2; for VR260 monitors under 1.1,
        !            16:      patch the kernel variable qv_def_scrn to 2.).
        !            17: 
        !            18:      Probably the most irritating problem with the QVSS hardware
        !            19:      is the cursor support, which is limited to 16x16. As only
        !            20:      ``and'' and ``or'' operations are available in the hardware,
        !            21:      the driver inverts the cursor depending upon the pixels
        !            22:      below the cursor. We will eventually get fed up and imple-
        !            23:      ment a software cursor.
        !            24: 
        !            25:      Under Ultrix-32 release 1.1 and 4.2BSD, the window system
        !            26:      will be slightly unreliable due to a kernel problem.  Fixed
        !            27:      in Ultrix32 release 1.2.  Under Ultrix-32 1.1, your best bet
        !            28:      is to use unix domain connections (unix:0 as host spec's)
        !            29:      for local connections.
        !            30: 
        !            31:      Thanks must go to Dave Carver (and others) in the DEC Works-
        !            32:      tations group for implementing the bit-blit library.  Large
        !            33:      area bit-blit code is compiled on the fly and runs at
        !            34:      optimal speed.
        !            35: 
        !            36:      Performance is now tolerable, between 3400 and 4200
        !            37:      characters/second on a VS2.  Performance on a VS1 is approx-
        !            38:      imately 2000 characters/second.  Some further improvement
        !            39:      can be expected.
        !            40: 
        !            41: SEE ALSO
        !            42:      X(8c), X(1)
        !            43:      `Xlib - C Language X Interface'
        !            44:      `ddX - Device Dependent X Interface'
        !            45: 
        !            46: AUTHOR
        !            47:      Copyright (c) 1984, 1985, 1986 by Massachusetts Institute of
        !            48:      Technology.
        !            49:      See X(1) for a complete Copyright notice.
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        !            62: 
        !            63: Printed 9/15/87          3 January 1985                         1
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