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Annotation of 43BSD/contrib/X/man/Xqvss.8c, revision 1.1

1.1     ! root        1: .TH XQVSS 8 "3 January 1985" "X Version 10"
        !             2: .SH NAME
        !             3: Xqvss - X window system QVSS implementation notes
        !             4: .SH DESCRIPTION
        !             5: .PP
        !             6: The QVSS hardware in the DEC VS1 and VS2 is monochrome.
        !             7: The usable size is 864 lines by 960 pixels/line.
        !             8: (Future driver mods will default to 1024 pixels/line on the VR260 monitor
        !             9: of the VS2, in Ultrix 1.2; for VR260 monitors under 1.1, patch
        !            10: the kernel variable qv_def_scrn to 2.).
        !            11: .PP
        !            12: Probably the most irritating problem with the QVSS hardware is the
        !            13: cursor support, which is limited to 16x16.
        !            14: As only ``and'' and ``or'' operations are available in the hardware,
        !            15: the driver inverts the cursor depending upon the pixels below
        !            16: the cursor.
        !            17: We will eventually get fed up and implement a software cursor.
        !            18: .PP
        !            19: Under Ultrix-32 release 1.1 and 4.2BSD,
        !            20: the window system will be slightly unreliable due
        !            21: to a kernel problem.
        !            22: Fixed in Ultrix32 release 1.2.
        !            23: Under Ultrix-32 1.1, your best bet is to use unix domain connections
        !            24: (unix:0 as host spec's) for local connections.
        !            25: .PP
        !            26: Thanks must go to Dave Carver (and others) in the DEC Workstations
        !            27: group for implementing the bit-blit library.
        !            28: Large area bit-blit code is compiled on the fly and runs at optimal
        !            29: speed.
        !            30: .PP
        !            31: Performance is now tolerable, between 3400 and 4200 characters/second
        !            32: on a VS2.
        !            33: Performance on a VS1 is approximately 2000 characters/second.
        !            34: Some further improvement can be expected.
        !            35: .SH "SEE ALSO"
        !            36: X(8c), X(1)
        !            37: .br
        !            38: `Xlib - C Language X Interface'
        !            39: .br
        !            40: `ddX - Device Dependent X Interface'
        !            41: .SH AUTHOR
        !            42: .br
        !            43: Copyright (c) 1984, 1985, 1986 by Massachusetts Institute of Technology.
        !            44: .br
        !            45: See X(1) for a complete Copyright notice.

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