31 lines
1.2 KiB
Plaintext
31 lines
1.2 KiB
Plaintext
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______ ____ ______ _____ ______
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| ____| | _ \| ____| / / _ \| ____|
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| |__ _ __ ___ ___| |_) | |__ / / |_| | |__
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| __| '__/ _ \/ _ \ _ <| __| / /| _ | __|
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| | | | | __/ __/ |_) | |____ / / | | | | |
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|_| |_| \___|\___|____/|______/_/ |_| |_|_|
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Video-7 driver implementation notes.
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This is a software-only driver for Video-7 chipsets, based on the native
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Video-7 driver from old versions of the Allegro library. It only supports
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256 color modes, and has no support for linear framebuffers or
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accelerated drawing. As such it is useful primarily because it is faster
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than the VESA 1.x bank switching mechanism, and as a workaround for the
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many bugs in common VESA driver implementations.
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This code is not portable to any platforms other than DOS+DPMI, because
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it uses BIOS calls to set the initial video mode.
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Any volunteers to add hardware accelerator support? That would be very
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welcome if you want to do it :-)
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By Peter Monks (Peter_Monks@australia.notes.pw.com)
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Scrolling fixed by Markus Oberhumer (markus.oberhumer@jk.uni-linz.ac.at)
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VBE/AF conversion by Shawn Hargreaves (shawn@talula.demon.co.uk)
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