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Annotation of 43BSDTahoe/new/X/man/man8/Xvs100.0, revision 1.1

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        !             4: XVS100(8)          UNIX Programmer's Manual            XVS100(8)
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        !             8: NAME
        !             9:      Xvs100 - X window system VS100 implementation notes
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        !            11: DESCRIPTION
        !            12:      The VS100 implementation of X was the first, and is com-
        !            13:      plete.  Many of the X output operations are in fact modeled
        !            14:      on the interface provided by the VS100 firmware.  The VS100
        !            15:      is a monochrome display, 864 bits high and 1088 bits wide.
        !            16:      The firmware we are currently using is version #235.
        !            17: 
        !            18:      Cursors can be any size up to 64x64.  Tiles can only be
        !            19:      16x16 in size.  Brushes can be any size, but the current
        !            20:      firmware draws wide lines about an order of magnitude slower
        !            21:      than 1x1 lines.  Off-screen storage is limited to that pro-
        !            22:      vided in the VS100 itself; no attempt is made to use DMA
        !            23:      access to VAX memory for fonts and such or to dynamically
        !            24:      shuffle data back and forth.
        !            25: 
        !            26:      The keyboard is controlled by the VS100 firmware. Unfor-
        !            27:      tunately, with the current firmware, the keyboard only gives
        !            28:      up transitions for the Control, Shift, Lock, and Meta keys,
        !            29:      so chord applications won't work.
        !            30: 
        !            31:      At system boot, for some reason the first three attempts to
        !            32:      down load the firmware fail.  Thus, a VS100 won't become
        !            33:      active until about 45 seconds after other terminal lines
        !            34:      activate. Power-cycling a VS100 will cause the X server to
        !            35:      restart.  The down problem doesn't occur in this case, but
        !            36:      typically a 3 minute TCP CLOSE_WAIT will occur.
        !            37: 
        !            38: SEE ALSO
        !            39:      X(8c), X(1)
        !            40:      `ddX - Device Dependent X Interface'
        !            41: 
        !            42: AUTHOR
        !            43:      Copyright (c) 1985, by Massachusetts Institute of Technol-
        !            44:      ogy.
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        !            62: 
        !            63: Printed 9/15/87          26 August 1985                         1
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