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diff --git a/qemu/roms/vgabios/README b/qemu/roms/vgabios/README deleted file mode 100644 index c68b5734e..000000000 --- a/qemu/roms/vgabios/README +++ /dev/null @@ -1,226 +0,0 @@ -Plex86/Bochs VGABios --------------------- - -The goal of this project is to have a LGPL'd Video Bios in plex86, -Bochs and qemu. -This VGA Bios is very specific to the emulated VGA card. -It is NOT meant to drive a physical vga card. - - -Cirrus SVGA extension ---------------------- - -The Cirrus SVGA extension is designed for the Cirrus emulation in Bochs and -qemu. The initial patch for the Cirrus extension has been written by Makoto -Suzuki (suzu). - - -Install -------- -To compile the VGA Bios you will need : -- gcc -- bcc -- as86 -- ld86 - -Untar the archive, and type make. You should get a "VGABIOS-lgpl-latest.bin" -file. Alternatively, you can use the binary file "VGABIOS-lgpl-latest.bin", -i have compiled for you. - -Edit your plex86/bochs conf file, and modify the load-rom command in the -VGA BIOS section, to point to the new vgabios image file. - - -Debugging ---------- -You can get a very basic debugging system: messages printed by the vgabios. -You have to register the "unmapped" device driver in plex86 or bochs, and make -sure it grabs port 0xfff0. - -Comment the #undef DEBUG at the beginning of vgabios.c. -You can then use the "printf" function in the bios. - - -Testing -------- -Look at the "testvga.c" file in the archive. This is a minimal Turbo C 2.0 -source file that calls a few int10 functions. Feel free to modify it to suit -your needs. - - -Copyright and License ---------------------- -This program has been written by Christophe Bothamy -It is protected by the GNU Lesser Public License, which you should -have received a copy of along with this package. - - -Reverse Engineering -------------------- -The VGA Bios has been written without reverse-engineering any existing Bios. - - -Acknowledgment --------------- -The source code contains code ripped from rombios.c of plex86, written -by Kevin Lawton <kevin2001@yahoo.com> - -The source code contains fonts from fntcol16.zip (c) by Joseph Gil avalable at : -ftp://ftp.simtel.net/pub/simtelnet/msdos/screen/fntcol16.zip -These fonts are public domain - -The source code is based on information taken from : -- Kevin Lawton's vga card emulation for bochs/plex86 -- Ralf Brown's interrupts list avalaible at - http://www.cs.cmu.edu/afs/cs/user/ralf/pub/WWW/files.html -- Finn Thogersons' VGADOC4b available at http://home.worldonline.dk/~finth/ -- Michael Abrash's Graphics Programming Black Book -- Francois Gervais' book "programmation des cartes graphiques cga-ega-vga" - edited by sybex -- DOSEMU 1.0.1 source code for several tables values and formulas - - -Feedback --------- -Please report any bugs, comments, patches for this VGA Bios to info@vruppert.de -You can find the latest release at : http://www.nongnu.org/vgabios/ -For any information on bochs, visit the website http://bochs.sourceforge.net/ -For any information on qemu, visit the website http://fabrice.bellard.free.fr/qemu/ - - -History -------- -vgabios-0.6c : Apr 08 2009 - - Volker - . added DPMS support to cirrus vgabios (patch from Gleb Natapov) - . use VBE LFB address from PCI base address if present - . added support for a lot more non-standard VBE modes (e.g. widescreen modes) - . minor bugfixes - -vgabios-0.6b : May 30 2008 - - Volker - . added PCI data structure for the Cirrus VGABIOS images - . minor bugfixes in biossums utility, VBE support and makefile - -vgabios-0.6a : Aug 19 2006 - - Volker - . added minimal support for the video parameter table (VPT) - . Cirrus SVGA now supports the "no clear" bit in Cirrus and VESA mode - . Bochs VBE protected mode interface improved - . save/restore video state support for Bochs VBE and standard VGA added - . generate vbetables.h dynamicly - . VBE video memory increased to 8 MB (VBE dispi ID changed to B0C4) - . lots of 4bpp VBE fixes (all 4bpp VBE modes now enabled) - . VGA compatible setup for VBE modes added - -vgabios-0.5d : Dec 29 2005 - - Volker - . Bochs VBE protected mode interface added (based on a patch by malc@pulsesoft.com) - . biossums utility now supports VGABIOS sizes up to 64 kBytes - . VGA mode 0x11: all color planes must be enabled in this 2-color VGA mode - -vgabios-0.5c : Jul 07 2005 - - Volker - . BIOS configuration word usually reports initial mode 80x25 color text - . vgabios function 0x0e (write teletype): linefeed (0x0a) only increments the - cursor row value - -vgabios-0.5b : May 24 2005 - - Volker - . fixed return value for the default case in the VBE section (non-debug mode) - . removed unused stuff - -vgabios-0.5a : Mar 07 2005 - - Volker - . Cirrus SVGA extension (initial patches from Makoto Suzuki, improvements - from Fabrice Bellard) - . vgabios image size is now exactly 32k with a checksum - . a lot of vgabios and vbe functions rewritten in assembler - . dynamicly generated VBE mode info list - . write character function for CGA and LINEAR8 modes - . read/write graphics pixel for some graphics modes - . text scroll feature for some graphics modes - . VBE 8-bit DAC support - -vgabios-0.4c : Nov 06 2003 - - Christophe - . fix font problem on initial screen of NT4 Loader - -vgabios-0.4b : Nov 04 2003 - - Volker - . fix offset of character tables - . optimizations of CRT controller accesses - . VBE i/o registers changed to 0x01CE/CF - (suggestion from Daniel Gimpelevich) - . "noclear" flag stored in BIOS area - . fix character height returned by get_font_info function - -vgabios-0.4a : Aug 17 2003 - - Volker - . VBE mode search rewritten (VBE modes with LFB bit removed) - . many bugfixes and optimizations - . write character function implemented for graphics modes - . support for 15bpp, 16bpp, 24bpp and 32bpp VBE modes added - . SVGA mode 0x6A added - . VBE modes 0x102, 0x117, 0x118 and 0x142 (Bochs specific) - -vgabios-0.3b : Nov 23 2002 - - Christophe - . added lfb-mode numbers (patch from mathis) - . updated the Makefile - . removed display of copyrights. - . changed the Copyright string to "LGPL VGABios developers" - - Volker - . set the cursor shape depending on the current font height - . clear BL before calling int 0x10 function 0x1103 in vgabios_init_func - . added some text font functions - - Jeroen - . Forced to new DISPI (0xb0c1) interface (requires latest bochs vbe code) - . Added multibuffering support - . Added new DISPI interface for: virt width, height, x offset, y offset - . Added LFB modes (to be used with the vbe-lfb patch in bochs) - see VBE_HAVE_LFB in vbe.c (currently default enabled) - . updated TODO & docs for changes after bochs 1.4 - -vgabios-0.3a : Mar 10 2002 - - Christophe - . Fixed bug in function ah=13 - - Jeroen - . updated vbebios implementation to new api - . added vbe_display_api documentation - . added 640x400x8, 640x480x8, 800x600x8, 1024x768 - (>640x480 needs a special bochs patch atm) - . added 320x200x8 vbe support (uses the standard 320x200x8 vga mode to - display, this allows for testing & having something on screen as well, - at least until bochs host side display is up & running) - . adding lfbprof (vbe) testprogram (+some small fixes to it) - . merging with vbebios 0.2 - -vgabios-0.2b : Nov 19 2001 - - Christophe - . Fixed bug in function ah=13 - -vgabios-0.2a : Nov 09 2001 - - Christophe - . Included bugfix from techt@pikeonline.net about grayscale summing - . Added the "IBM" string at org 0x1e as Bart Oldeman suggested - . Fixed DS and ES that where inverted in the int10 parameters list! - . The following have been implemented : - - function ax=1a00, ax=1a01, ah=1b - - function ax=1130 - . Added debug messages for unimplemented/unknown functions - Must be compiled with DEBUG defined. The output is trapped - by the unknown-ioport driver of plex/bochs (port 0xfff0 is used) - -vgabios-0.1a : May 8 2001 - - Christophe - . First release. The work has been focused only on text mode. - . The following have been implemented : - - inits - - int 10 handler - - functions ah=00, ah=01, ah=02, ah=03, ah=05, ah=06, ah=07, ah=08 - ah=09, ah=0a, ah=0e, ah=0f, ax=1000, ax=1001, ax=1002, ax=1003 - ax=1007, ax=1008, ax=1009, ax=1010, ax=1012, ax=1013, ax=1015 - ax=1017, ax=1018, ax=1019, ax=101a, ax=101b, ah=12 bl=10, - ah=12 bl=30, ah=12 bl=31, ah=12 bl=32, ah=12 bl=33, ah=12 bl=34 - ah=13 |