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Annotation of 43BSDTahoe/new/X/man/man8/Xvs100.0, revision 1.1.1.1

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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.
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                     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.
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                     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.
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                     38: SEE ALSO
                     39:      X(8c), X(1)
                     40:      `ddX - Device Dependent X Interface'
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                     42: AUTHOR
                     43:      Copyright (c) 1985, by Massachusetts Institute of Technol-
                     44:      ogy.
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                     63: Printed 9/15/87          26 August 1985                         1
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