- add SVGAlib patch from Igor Popik <igipop@wsfiz.edu.pl>

2002-11-21 01:31:12 +00:00 · 2002-11-21 01:31:12 +00:00 · bd73bf4d8d
commit bd73bf4d8d
parent de814bece5
1 changed files with 656 additions and 0 deletions
--- a/bochs/patches/patch.svgalib-gui
+++ b/bochs/patches/patch.svgalib-gui
@ -0,0 +1,656 @@
+----------------------------------------------------------------------
+Patch name: patch.svgalib-gui
+Author: Igor Popik <igipop@wsfiz.edu.pl>
+Date: 21 Nov 2002 01:33:56 +0100
+
+Detailed description:
+I have been playing bochs for a while and I have decided to create my
+own gui plugin. This gui plugin uses svgalib (linux, x86 only - i
+guess), runs on fullscreen without X11. It was tested quite hard and i
+guess that there are no major bugs in it ;-P, but is one major problem:
+svgalib in 256 color modes can set up palette with r,g,b values from
+range 0 to 63 (6 bits)... so some colors are broken unless you have
+mach32 graphic card (normal 8 bits). Some colors look ugly, but i'm
+working on an improved version which will make use of 32K color modes...
+The plugin itself is heavily based on other gui plugins, it can change
+resolution upon dimension_update request: 320x200, 640x400 and 640x480
+modes are supported.
+There was a header filename conflict, svgalib also uses header file
+named vga.h so i had to include svgalib's vga.h with full path:
+#include "/usr/include/vga.h"
+
+If anybody is interested in developement of this gui, has suggestions
+please mail me. Maybe someone will find this useful or maybe it will be
+included in some future realease of bochs.
+
+Path is created against cvs version (one of the latest 2.0pre1 or
+something) of bochs.
+
+Patch was created with:
+  cvs diff -u
+Apply patch to what version:
+  cvs checked out on DATE, release version VER
+Instructions:
+  To patch, go to main bochs directory.
+  Type "patch -p1 < THIS_PATCH_FILE".
+----------------------------------------------------------------------
+diff -ur bochs/config.h.in bochs-svga/config.h.in
+--- bochs/config.h.in	Sat Nov 16 16:08:16 2002
+++ bochs-svga/config.h.in	Tue Nov 12 21:56:50 2002
+@@ -370,6 +370,7 @@
+ #define BX_WITH_RFB 0
+ #define BX_WITH_AMIGAOS 0
+ #define BX_WITH_SDL 0
+#define BX_WITH_SVGA 0
+ #define BX_WITH_WX 0
+ 
+ // add special export symbols for win32 DLL building.  The main code must
+diff -ur bochs/main.cc bochs-svga/main.cc
+--- bochs/main.cc	Sat Nov 16 16:08:46 2002
+++ bochs-svga/main.cc	Tue Nov 12 21:58:19 2002
+@@ -966,6 +966,9 @@
+ #if BX_WITH_SDL
+     "sdl",
+ #endif
+#if BX_WITH_SVGA
+    "svga",
+#endif
+ #if BX_WITH_TERM
+     "term",
+ #endif
+@@ -1799,6 +1693,10 @@
+ #if BX_WITH_SDL
+   if (!strcmp (gui_name, "sdl")) 
+     PLUG_load_plugin (sdl, PLUGTYPE_OPTIONAL);
+#endif
+#if BX_WITH_SVGA
+  if (!strcmp (gui_name, "svga")) 
+    PLUG_load_plugin (svga, PLUGTYPE_OPTIONAL);
+ #endif
+ #if BX_WITH_TERM
+   if (!strcmp (gui_name, "term")) 
+diff -ur bochs/plugin.h bochs-svga/plugin.h
+--- bochs/plugin.h	Sat Nov 16 16:08:46 2002
+++ bochs-svga/plugin.h	Tue Nov 12 22:14:22 2002
+@@ -299,6 +296,7 @@
+ DECLARE_PLUGIN_INIT_FINI_FOR_MODULE(nogui)
+ DECLARE_PLUGIN_INIT_FINI_FOR_MODULE(rfb)
+ DECLARE_PLUGIN_INIT_FINI_FOR_MODULE(sdl)
+DECLARE_PLUGIN_INIT_FINI_FOR_MODULE(svga)
+ DECLARE_PLUGIN_INIT_FINI_FOR_MODULE(term)
+ DECLARE_PLUGIN_INIT_FINI_FOR_MODULE(win32)
+ DECLARE_PLUGIN_INIT_FINI_FOR_MODULE(wx)
+diff -ur bochs/configure.in bochs-svga/configure.in
+--- bochs/configure.in	Sat Nov 16 16:08:46 2002
+++ bochs-svga/configure.in	Tue Nov 12 21:42:28 2002
+@@ -84,6 +84,7 @@
+ 
+ dnl // make sure X Windows is default if no other chosen
+ if (test "$with_sdl" != yes) && \
+   (test "$with_svga" != yes) && \
+    (test "$with_x11" != yes) && \
+    (test "$with_beos" != yes) && \
+    (test "$with_win32" != yes) && \
+@@ -268,6 +269,15 @@
+     fi
+   fi
+ 
+  if test "$with_svga" != yes; then
+    can_compile_svga=1
+    AC_CHECK_HEADER([vga.h], [], [ can_compile_svga=0 ])
+    AC_CHECK_HEADER([vgagl.h], [], [ can_compile_svga=0 ])
+    if test $can_compile_svga = 1; then
+      with_svga=yes
+    fi
+  fi
+
+   if test "$with_x11" != yes; then
+     can_compile_x11=1
+     AC_CHECK_HEADER([X11/Xlib.h], [], [ can_compile_x11=0 ])
+@@ -1541,6 +1550,10 @@
+   [  --with-sdl                        use SDL libraries],
+   )
+ 
+AC_ARG_WITH(svga,
+  [  --with-svga                        use SVGALib libraries],
+  )
+
+ AC_ARG_WITH(wx,
+   [  --with-wx                         use wxWindows libraries],
+   )
+@@ -1653,6 +1666,17 @@
+   GUI_LINK_OPTS="$GUI_LINK_OPTS \$(GUI_LINK_OPTS_SDL)"
+ fi
+ 
+if test "$with_svga" = yes; then
+  display_libs="$display_libs svga"
+  AC_DEFINE(BX_WITH_SVGA, 1)
+  SPECIFIC_GUI_OBJS="$SPECIFIC_GUI_OBJS \$(GUI_OBJS_SVGA)"
+  # GUI_*FLAGS are added to the compilation of every bochs file, not just
+  # the files in gui/*.cc.
+  GUI_CFLAGS="$GUI_CFLAGS"
+  GUI_CXXFLAGS="$GUI_CXXFLAGS"
+  GUI_LINK_OPTS="$GUI_LINK_OPTS \$(GUI_LINK_OPTS_SVGA)"
+fi
+
+ if test "$with_rfb" = yes; then
+   display_libs="$display_libs rfb"
+   AC_DEFINE(BX_WITH_RFB, 1)
+diff -ur bochs/gui/Makefile.in bochs-svga/gui/Makefile.in
+--- bochs/gui/Makefile.in	Sat Nov 16 16:11:08 2002
+++ bochs-svga/gui/Makefile.in	Tue Nov 12 21:40:19 2002
+@@ -58,6 +58,7 @@
+ 
+ GUI_OBJS_X11  = x.o
+ GUI_OBJS_SDL = sdl.o
+GUI_OBJS_SVGA = svga.o
+ GUI_OBJS_BEOS = beos.o
+ GUI_OBJS_WIN32 = win32.o
+ GUI_OBJS_MACOS = macintosh.o
+@@ -235,6 +236,17 @@
+  ../iodev/serial.h ../iodev/unmapped.h ../iodev/eth.h ../iodev/ne2k.h \
+  ../iodev/guest2host.h ../iodev/slowdown_timer.h ../plugin.h \
+  ../instrument/stubs/instrument.h icon_bochs.h sdl.h
+svga.lo: svga.@CPP_SUFFIX@ ../bochs.h ../config.h ../osdep.h ../debug/debug.h \
+ ../bxversion.h ../gui/siminterface.h ../state_file.h ../cpu/cpu.h \
+ ../cpu/lazy_flags.h ../cpu/i387.h ../memory/memory.h ../pc_system.h \
+ ../gui/gui.h ../gui/textconfig.h ../gui/keymap.h ../iodev/iodev.h \
+ ../iodev/pci.h ../iodev/pci2isa.h ../iodev/vga.h ../iodev/biosdev.h \
+ ../iodev/cmos.h ../iodev/dma.h ../iodev/floppy.h ../iodev/harddrv.h \
+ ../iodev/cdrom.h ../iodev/keyboard.h ../iodev/parallel.h \
+ ../iodev/pic.h ../iodev/pit.h ../iodev/pit_wrap.h ../iodev/pit82c54.h \
+ ../iodev/serial.h ../iodev/unmapped.h ../iodev/eth.h ../iodev/ne2k.h \
+ ../iodev/guest2host.h ../iodev/slowdown_timer.h ../plugin.h \
+ ../instrument/stubs/instrument.h icon_bochs.h
+ siminterface.lo: siminterface.@CPP_SUFFIX@ ../bochs.h ../config.h ../osdep.h \
+  ../debug/debug.h ../bxversion.h ../gui/siminterface.h ../state_file.h \
+  ../cpu/cpu.h ../cpu/lazy_flags.h ../cpu/i387.h ../memory/memory.h \
+diff -urN bochs/gui/CVS/Entries bochs-svga/gui/CVS/Entries
+diff -urN bochs/gui/svga.cc bochs-svga/gui/svga.cc
+--- bochs/gui/svga.cc	Thu Jan  1 01:00:00 1970
+++ bochs-svga/gui/svga.cc	Thu Nov 21 00:25:27 2002
+@@ -0,0 +1,473 @@
+//
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+
+#define _MULTI_THREAD
+
+// Define BX_PLUGGABLE in files that can be compiled into plugins.  For
+// platforms that require a special tag on exported symbols, BX_PLUGGABLE 
+// is used to know when we are exporting symbols and when we are importing.
+#define BX_PLUGGABLE
+
+#include <stdlib.h>
+#include "/usr/include/vga.h"
+#include <vgagl.h>
+#include <vgakeyboard.h>
+#include <vgamouse.h>
+
+#include "font/vga.bitmap.h"
+#include "bochs.h"
+#include "icon_bochs.h"
+
+class bx_svga_gui_c : public bx_gui_c {
+public:
+  bx_svga_gui_c (void);
+  DECLARE_GUI_VIRTUAL_METHODS()
+};
+
+// declare one instance of the gui object and call macro to insert the
+// plugin code
+static bx_svga_gui_c *theGui = NULL;
+
+IMPLEMENT_GUI_PLUGIN_CODE(svga)
+
+#define LOG_THIS theGui->
+
+static unsigned res_x, res_y;
+static int fontwidth = 8, fontheight = 16;
+static unsigned tilewidth, tileheight;
+static unsigned char vgafont[256 * 16];
+static int clut8 = 0;
+GraphicsContext *screen = NULL;
+
+void keyboard_handler(int scancode, int press);
+void mouse_handler(int button, int dx, int dy, int dz, 
+		    int drx, int dry, int drz);
+
+unsigned char reverse_byteorder(unsigned char b)
+{
+    unsigned char ret = 0;
+    
+    for (unsigned i=0;i<8;i++){
+	ret |= (b & 0x01) << (7 - i);
+	b >>= 1;
+    }
+    return ret;
+}
+
+void create_vga_font()
+{
+    memcpy(vgafont, bx_vgafont, sizeof(bx_vgafont));
+    
+    for (unsigned i=0;i< sizeof(bx_vgafont);i++) {
+	vgafont[i] = reverse_byteorder(vgafont[i]);
+    }    
+}
+
+bx_svga_gui_c::bx_svga_gui_c ()
+{
+  put("SVGA");
+}
+
+void bx_svga_gui_c::specific_init(
+    int argc,
+    char **argv,
+    unsigned x_tilesize,
+    unsigned y_tilesize,
+    unsigned header_bar_y)
+{
+  tilewidth = x_tilesize;
+  tileheight = y_tilesize;
+
+  if(vga_init() != 0 )
+  {
+    LOG_THIS setonoff(LOGLEV_PANIC, ACT_FATAL);
+    BX_PANIC (("Unable to initialize SVGAlib"));
+    return;
+  }
+  
+  screen = gl_allocatecontext();
+  
+  dimension_update(640,400);
+  create_vga_font();
+  gl_setfont(8, 16, (void *)vgafont);
+  gl_setwritemode(FONT_COMPRESSED);
+  
+  keyboard_init();
+  keyboard_translatekeys(DONT_CATCH_CTRLC);
+  keyboard_seteventhandler((__keyboard_handler) keyboard_handler);
+
+  vga_setmousesupport(1);
+  mouse_seteventhandler((__mouse_handler) mouse_handler);
+  if (vga_ext_set(VGA_EXT_AVAILABLE, VGA_AVAIL_FLAGS) & VGA_CLUT8) {
+    vga_ext_set(VGA_EXT_SET, VGA_CLUT8);
+    clut8 = 1;
+  }
+}
+
+void bx_svga_gui_c::text_update(
+    Bit8u *old_text,
+    Bit8u *new_text,
+    unsigned long cursor_x,
+    unsigned long cursor_y,
+    Bit16u cursor_state,
+    unsigned rows)
+{
+   unsigned x, y, i;
+   unsigned char achar;
+   unsigned chars, cols;
+   char s[] = " ";
+   static int previ;
+   int cursori;
+   
+   cols = res_x/fontwidth;
+
+   cursori = (cursor_y*cols + cursor_x) * 2;
+   
+   chars = cols*rows;
+   
+   for (i=0; i<chars*2; i+=2) {
+        if (i == cursori || i == previ || old_text[i] != new_text[i] ||
+	    old_text[i+1] != new_text[i+1]) {
+	    
+	s[0] = new_text[i];
+	x = (i/2) % cols;
+	y = (i/2) / cols;
+
+	if (i == cursori) {
+	    gl_setfontcolors(new_text[i+1] & 0x0F, (new_text[i+1] & 0xF0) >> 4);
+	} else {
+	    gl_setfontcolors((new_text[i+1] & 0xF0) >> 4, new_text[i+1] & 0x0F);
+	}
+	gl_write(x * fontwidth, y * fontheight, s);
+	}
+    }
+    previ = cursori;
+}
+
+  int
+bx_svga_gui_c::get_clipboard_text(Bit8u **bytes, Bit32s *nbytes)
+{
+  return 0;
+}
+
+  int
+bx_svga_gui_c::set_clipboard_text(char *text_snapshot, Bit32u len)
+{
+  return 0;
+}
+
+
+void bx_svga_gui_c::graphics_tile_update(
+    Bit8u *snapshot,
+    unsigned x,
+    unsigned y)
+{
+   gl_putbox(x, y, tilewidth, tileheight, snapshot);
+}
+
+static Bit32u vga_to_bx_key(int key)
+{
+    switch (key) {
+	case SCANCODE_ESCAPE: return BX_KEY_ESC;
+	case SCANCODE_1: return BX_KEY_1;
+	case SCANCODE_2: return BX_KEY_2;
+	case SCANCODE_3: return BX_KEY_3;
+	case SCANCODE_4: return BX_KEY_4;
+	case SCANCODE_5: return BX_KEY_5;
+	case SCANCODE_6: return BX_KEY_6;
+	case SCANCODE_7: return BX_KEY_7;
+	case SCANCODE_8: return BX_KEY_8;
+	case SCANCODE_9: return BX_KEY_9;
+	case SCANCODE_0: return BX_KEY_0;
+
+	case SCANCODE_MINUS: return BX_KEY_MINUS;
+	case SCANCODE_EQUAL: return BX_KEY_EQUALS;
+	case SCANCODE_TAB: return BX_KEY_TAB;
+	case SCANCODE_BACKSPACE: return BX_KEY_BACKSPACE;
+
+	case SCANCODE_Q: return BX_KEY_Q;
+	case SCANCODE_W: return BX_KEY_W;
+	case SCANCODE_E: return BX_KEY_E;
+	case SCANCODE_R: return BX_KEY_R;
+	case SCANCODE_T: return BX_KEY_T;
+	case SCANCODE_Y: return BX_KEY_Y;
+	case SCANCODE_U: return BX_KEY_U;
+	case SCANCODE_I: return BX_KEY_I;
+	case SCANCODE_O: return BX_KEY_O;
+	case SCANCODE_P: return BX_KEY_P;
+
+	case SCANCODE_BRACKET_LEFT: return BX_KEY_LEFT_BRACKET;
+	case SCANCODE_BRACKET_RIGHT: return BX_KEY_RIGHT_BRACKET;
+
+	case SCANCODE_ENTER: return BX_KEY_ENTER;
+	case SCANCODE_LEFTCONTROL: return BX_KEY_CTRL_L;
+
+	case SCANCODE_A: return BX_KEY_A;
+	case SCANCODE_S: return BX_KEY_S;
+	case SCANCODE_D: return BX_KEY_D;
+	case SCANCODE_F: return BX_KEY_F;
+	case SCANCODE_G: return BX_KEY_G;
+	case SCANCODE_H: return BX_KEY_H;
+	case SCANCODE_J: return BX_KEY_J;
+	case SCANCODE_K: return BX_KEY_K;
+	case SCANCODE_L: return BX_KEY_L;
+
+	case SCANCODE_SEMICOLON: return BX_KEY_SEMICOLON;
+	case SCANCODE_APOSTROPHE: return BX_KEY_SINGLE_QUOTE;
+	case SCANCODE_GRAVE: return BX_KEY_GRAVE;
+
+	case SCANCODE_LEFTSHIFT: return BX_KEY_SHIFT_L;
+	case SCANCODE_BACKSLASH: return BX_KEY_BACKSLASH;
+
+	case SCANCODE_Z: return BX_KEY_Z;
+	case SCANCODE_X: return BX_KEY_X;
+	case SCANCODE_C: return BX_KEY_C;
+	case SCANCODE_V: return BX_KEY_V;
+	case SCANCODE_B: return BX_KEY_B;
+	case SCANCODE_N: return BX_KEY_N;
+	case SCANCODE_M: return BX_KEY_M;
+
+	case SCANCODE_COMMA: return BX_KEY_COMMA;
+	case SCANCODE_PERIOD: return BX_KEY_PERIOD;
+	case SCANCODE_SLASH: return BX_KEY_SLASH;
+
+	case SCANCODE_RIGHTSHIFT: return BX_KEY_SHIFT_R;
+	case SCANCODE_KEYPADMULTIPLY: return BX_KEY_KP_MULTIPLY;
+	
+	case SCANCODE_LEFTALT: return BX_KEY_ALT_L;
+	case SCANCODE_SPACE: return BX_KEY_SPACE;
+	case SCANCODE_CAPSLOCK: return BX_KEY_CAPS_LOCK;
+
+	case SCANCODE_F1: return BX_KEY_F1;
+	case SCANCODE_F2: return BX_KEY_F2;
+	case SCANCODE_F3: return BX_KEY_F3;
+	case SCANCODE_F4: return BX_KEY_F4;
+	case SCANCODE_F5: return BX_KEY_F5;
+	case SCANCODE_F6: return BX_KEY_F6;
+	case SCANCODE_F7: return BX_KEY_F7;
+	case SCANCODE_F8: return BX_KEY_F8;
+	case SCANCODE_F9: return BX_KEY_F9;
+	case SCANCODE_F10: return BX_KEY_F10;
+
+	case SCANCODE_NUMLOCK: return BX_KEY_NUM_LOCK;
+	case SCANCODE_SCROLLLOCK: return BX_KEY_SCRL_LOCK;
+	
+	case SCANCODE_KEYPAD7: return BX_KEY_KP_HOME;
+	case SCANCODE_KEYPAD8: return BX_KEY_KP_UP;
+	case SCANCODE_KEYPAD9: return BX_KEY_KP_PAGE_UP;
+	case SCANCODE_KEYPADMINUS: return BX_KEY_KP_SUBTRACT;
+	case SCANCODE_KEYPAD4: return BX_KEY_KP_LEFT;
+	case SCANCODE_KEYPAD5: return BX_KEY_KP_5;
+	case SCANCODE_KEYPAD6: return BX_KEY_KP_RIGHT;
+	case SCANCODE_KEYPADPLUS: return BX_KEY_KP_ADD;
+	case SCANCODE_KEYPAD1: return BX_KEY_KP_END;
+	case SCANCODE_KEYPAD2: return BX_KEY_KP_DOWN;
+	case SCANCODE_KEYPAD3: return BX_KEY_KP_PAGE_DOWN;
+	case SCANCODE_KEYPAD0: return BX_KEY_KP_INSERT;
+//	case SCANCODE_KEYPADPERIOD: return BX_KEY_KP_; /* ??? */
+
+//	case SCANCODE_LESS: return BX_KEY_KP_LESS;	/* ??? */
+
+	case SCANCODE_F11: return BX_KEY_F11;
+	case SCANCODE_F12: return BX_KEY_F12;
+
+	case SCANCODE_KEYPADENTER: return BX_KEY_KP_ENTER;
+	case SCANCODE_RIGHTCONTROL: return BX_KEY_CTRL_R;
+	case SCANCODE_KEYPADDIVIDE: return BX_KEY_KP_DIVIDE;
+	case SCANCODE_PRINTSCREEN: return BX_KEY_PRINT;
+	case SCANCODE_RIGHTALT: return BX_KEY_ALT_R;
+	case SCANCODE_BREAK: return BX_KEY_PAUSE;
+
+	case SCANCODE_HOME: return BX_KEY_HOME;
+	case SCANCODE_CURSORBLOCKUP: return BX_KEY_UP;
+	case SCANCODE_PAGEUP: return BX_KEY_PAGE_UP;
+	case SCANCODE_CURSORBLOCKLEFT: return BX_KEY_LEFT;
+	case SCANCODE_CURSORBLOCKRIGHT: return BX_KEY_RIGHT;
+	case SCANCODE_END: return BX_KEY_END;
+	case SCANCODE_CURSORBLOCKDOWN: return BX_KEY_DOWN;
+	case SCANCODE_PAGEDOWN: return BX_KEY_PAGE_DOWN;
+	case SCANCODE_INSERT: return BX_KEY_INSERT;
+	case SCANCODE_REMOVE: return BX_KEY_DELETE;
+
+	case SCANCODE_RIGHTWIN: return BX_KEY_WIN_R;
+	case SCANCODE_LEFTWIN: return BX_KEY_WIN_L;
+
+	default: return 0;
+    }
+}
+
+void keyboard_handler(int scancode, int press)
+{
+    if (scancode == SCANCODE_F12) {
+        keyboard_close();
+        vga_setmode(TEXT);
+    } else {
+	int bx_key = vga_to_bx_key(scancode);
+	Bit32u key_state;
+		
+	if (press) {
+	    key_state = BX_KEY_PRESSED;
+	} else { 
+	    key_state = BX_KEY_RELEASED;
+	}
+	
+	DEV_kbd_gen_scancode(bx_key | key_state);
+    }
+}
+
+void mouse_handler(int button, int dx, int dy, int dz, 
+		    int drx, int dry, int drz)
+{
+    char a[100];
+    int buttons = 0;
+
+    if (button & MOUSE_LEFTBUTTON) {
+	buttons |= 0x01;
+    }
+
+    if (button & MOUSE_RIGHTBUTTON) {
+	buttons |= 0x02;
+    }
+    DEV_mouse_motion((int) (0.25 * dx), (int) -(0.25 * dy), buttons);
+}
+
+void bx_svga_gui_c::handle_events(void)
+{
+    keyboard_update();
+    keyboard_clearstate();
+    mouse_update();
+}
+
+void bx_svga_gui_c::flush(void)
+{
+    gl_copyscreen(screen);
+}
+
+void bx_svga_gui_c::clear_screen(void)
+{
+    gl_clearscreen(0);
+}
+
+bx_bool bx_svga_gui_c::palette_change(
+    unsigned index,
+    unsigned red,
+    unsigned green,
+    unsigned blue)
+{
+  if( index > 255 ) return 0;
+
+  // without VGA_CLUT8 extension we have only 6 bits for each r,g,b value   
+  if (!clut8 && (red > 63 || green > 63 || blue > 63)) {
+	red   = red >> 2;
+	green = green >> 2;
+	blue  = blue >> 2;
+  }
+  
+  vga_setpalette(index, red, green, blue);
+  
+  return 1;
+}
+
+
+void bx_svga_gui_c::dimension_update(
+    unsigned x,
+    unsigned y,
+    unsigned fheight)
+{
+  int mode;
+    
+  // TODO: remove this stupid check whenever the vga driver is fixed
+  if( y == 208 ) y = 200;
+    
+  if( fheight > 0 )
+  {
+    fontheight = fheight;
+    fontwidth = 8;
+  }
+
+  if( (x == res_x) && (y == res_y )) return;
+
+  if (x == 640 && y == 480) { 
+    mode = G640x480x256;
+  } else if (x == 640 && y == 400) {
+    mode = G640x400x256;
+  } else if (x == 320 && y == 200) {
+    mode = G320x200x256;
+  }
+  
+  if (!vga_hasmode(mode)) {
+    mode = G640x480x256; // trying "default" mode...
+  }
+  
+  if (vga_setmode(mode) != 0)
+  {
+      LOG_THIS setonoff(LOGLEV_PANIC, ACT_FATAL);
+      BX_PANIC (("Unable to set requested videomode: %ix%i", x, y));
+  }
+  
+  gl_setcontextvga(mode);
+  gl_getcontext(screen);
+  gl_setcontextvgavirtual(mode);
+
+  res_x = x;
+  res_y = y;
+}
+
+
+unsigned bx_svga_gui_c::create_bitmap(
+    const unsigned char *bmap,
+    unsigned xdim,
+    unsigned ydim)
+{
+  return 0;
+}
+
+
+unsigned bx_svga_gui_c::headerbar_bitmap(
+    unsigned bmap_id,
+    unsigned alignment,
+    void (*f)(void))
+{
+  return 0;
+}
+
+
+void bx_svga_gui_c::replace_bitmap(
+    unsigned hbar_id,
+    unsigned bmap_id)
+{
+}
+
+
+void bx_svga_gui_c::show_headerbar(void)
+{
+}
+
+
+void bx_svga_gui_c::mouse_enabled_changed_specific (bx_bool val)
+{
+}
+
+
+void headerbar_click(int x)
+{
+}
+
+void bx_svga_gui_c::exit(void)
+{
+    vga_setmode(TEXT);
+    keyboard_close();
+    mouse_close();
+}
+diff -ur bochs/Makefile.in bochs-svga/Makefile.in
+--- bochs/Makefile.in	Sat Nov 16 16:08:16 2002
+++ bochs-svga/Makefile.in	Tue Nov 12 21:58:44 2002
+@@ -99,6 +98,7 @@
+ X_PRE_LIBS = @X_PRE_LIBS@
+ GUI_LINK_OPTS_X = $(X_LIBS) $(X_PRE_LIBS) -lX11
+ GUI_LINK_OPTS_SDL = `sdl-config --cflags --libs`
+GUI_LINK_OPTS_SVGA =  -lvga -lvgagl
+ GUI_LINK_OPTS_BEOS = -lbe
+ GUI_LINK_OPTS_RFB = @RFB_LIBS@
+ GUI_LINK_OPTS_AMIGAOS =