First commit 16/09/1994
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BGI/README
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BGI/README
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**************************************************************
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COPYRIGHT 1991, JORDAN HARGRAPHIX SOFTWARE
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PORTIONS COPYRIGHT JOHN BRIDGES, 1990
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CHRISTOPHER MORGAN, 1984
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**************************************************************
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Here it is! The SuperVGA/Tweak BGI drivers you have all been waiting for! ;->
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These drivers support a wide range of VGA cards, and should work on
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all major brands.
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Card types supported: (SuperVGA drivers)
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Ahead, ATI, Chips & Tech, Everex, Genoa, Paradise, Trident (both 8800
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and 8900), Tseng (both 3000 and 4000 chipsets) and Video7.
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These drivers will also work on video cards with VESA capability.
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The tweaked drivers will work on any register-compatible VGA card.
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I have not tested these drivers on all these card types, so I can not guarantee
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perfect operation with your card. I have tested them extensively
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on Trident, Tseng and ATI cards, and have had no problems. (Trident 8800
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cards occasionally have problems, especially older models)
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Modes currently supported:
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SuperVGA 16-color
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0) Standard EGA/VGA 320x200x16
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1) Standard EGA/VGA 640x200x16
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2) Standard EGA/VGA 640x350x16
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3) Standard VGA 640x480x16
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4) SuperVGA/VESA 800x600x16
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5) SuperVGA/VESA 1024x768x16
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SuperVGA 256-color
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0) Standard VGA/MCGA 320x200x256
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1) 256k Svga/VESA 640x400x256
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2) 512k Svga/VESA 640x480x256
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3) 512k Svga/VESA 800x600x256
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4) 1024k Svga/VESA 1024x768x256
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Tweaked 16-color
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0) 704x528x16
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1) 720x540x16
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2) 736x552x16
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3) 752x564x16
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4) 768x576x16
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5) 784x588x16
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6) 800x600x16
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Tweaked 256-color
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0) 320x400x256
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1) 320x480x256
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2) 360x480x256
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3) 376x564x256
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4) 400x564x256
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5) 400x600x256
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----------------------------------------------------------------------------
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INSTALLATION:
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Using the driver in existing programs is easy. (If you have the source)
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Check the files INITSVGA.C and INITSVGA.PAS for examples of installation
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into C and Pascal programs.
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----------------------------------------------------------------------------
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NOTE:
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- The mouse cursor may not work in all modes of my driver. This is because
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most mouse drivers do not support SuperVGA/Tweak modes.
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- The registerbgidriver(*) function does not work. This is due to a limitation
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in the BGI kernel, which checks the linked in driver with a list of the
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standard BGI drivers (CGA,EGAVGA,etc..), and if it is not one of those,
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will not use the linked in driver.
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* However, registerfarbgidriver DOES work properly with C/C++... (8/1/91)
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Check INITSVGA.C and the makefile for examples of how to use.
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- Imagesize does not work. (the kernel does not call the driver to do this)
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Use the following formula:
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* imsize = ((xwid >> 1)+1)*ywid+4; (16-color)
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* imsize = xwid*ywid+4; (256-color)
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----------------------------------------------------------------------------
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WARNING: The drivers do not test to see if the card installed is
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actually a VGA card (If the Svga drivers do not detect a SuperVGA card, they
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treat the card as a standard VGA), so DO NOT use the drivers if you do not
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have a VGA card installed.
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-------------------------------------------------------------------------
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REGISTRATION:
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I have decided to release these drivers free of charge,
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although donations would be greatly appreciated and certainly
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expedite the release of future versions. :->
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The drivers have not been crippled in any way, though beta releases of new
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drivers may have some functions yet unimplemented.
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Registration fees:
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SuperVGA 256 $20
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SuperVGA 16 $20
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Tweak 16 $20
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Tweak 256 $20
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Any two: $30
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All 4: $50
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With donations of $20 and up, you will be considered a registered user.
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Registered users get the full source code and upgrades on future releases.
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From September 1-May 8, please send checks/money to:
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Jordan Hargrave
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1000 Morewood Ave, Box #3277
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Pittsburgh, PA 15213
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(412) 268-4493
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From May 8-September 1, send to:
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Jordan Hargrave
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1615 Burnley Road
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Charlotte, NC 28210
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(704) 553-2332
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I have started working on a new graphics library that will support resolutions
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from 160x200 (Ick! ;->) all the way up to 1280x1024, and from 1-bit color
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to 24-bit color. It will support a wide range of cards and I need testers
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for XGA/8514/Hercules Graphics Station cards.
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*===============================*===========================================*
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| Jordan Powell Hargrave | Internet: jh5y@andrew.cmu.edu |
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| 1000 Morewood Ave, Box #3277 | Bitnet: jh5y%andrew.cmu.edu@cmccvb |
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| Pittsburgh, PA 15213 | UUCP: uunet!andrew.cmu.edu!jh5y |
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| (412) 268-4493 | Prodigy: HXNJ79A |
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| | Compuserve: [72510,1143] |
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*===============================*===========================================*
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