--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/video/xbios/SDL_xbios_blowup.c	Tue Feb 22 17:57:40 2005 +0000
@@ -0,0 +1,93 @@
+/*
+    SDL - Simple DirectMedia Layer
+    Copyright (C) 1997-2004 Sam Lantinga
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library 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
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    Sam Lantinga
+    slouken@libsdl.org
+*/
+
+/*
+	Blowup extension definitions
+
+	Patrice Mandin
+*/
+
+#include "SDL_xbios.h"
+#include "SDL_xbios_blowup.h"
+
+void SDL_XBIOS_BlowupInit(_THIS, blow_cookie_t *cookie_blow)
+{
+	int i, num_mode, bank, keep_old;
+	xbiosmode_t *current_mode;
+	blow_mode_t *blow_mode;
+
+	current_mode = XBIOS_modelist;
+	for (i=0;i<XBIOS_nummodes;i++) {
+		keep_old=1;	/* use default mode */
+		blow_mode = NULL;
+		switch (current_mode->depth) {
+			case 1:
+				num_mode=0;
+				break;
+			case 2:
+				num_mode=1;
+				break;
+			case 4:
+				num_mode=2;
+				break;
+			case 8:
+				num_mode=3;
+				break;
+			case 16:
+				num_mode=4;
+				break;
+			default:
+				num_mode=-1;
+				break;
+		}
+
+		/* Check which bank of modes to use */
+		if (num_mode>=0) {
+			bank = cookie_blow->num_mode[num_mode];
+			blow_mode = &(cookie_blow->blowup_modes[num_mode+(bank*5)]);
+	
+			/* Check extended mode enabled */
+			if (blow_mode->enabled == 0) {
+				/* Check monitor needed for this mode */
+				if ((blow_mode->monitor == cookie_blow->montype)
+					|| ((blow_mode->monitor == MONITOR_TV)
+						&& (cookie_blow->montype == MONITOR_RGB))
+					|| ((blow_mode->monitor == MONITOR_RGB)
+						&& (cookie_blow->montype == MONITOR_TV)))
+				{
+					keep_old = 0; /* we can use this extended mode */
+				}
+			}
+		}
+
+		if (keep_old) {
+			/* disable blowup for this mode */
+			current_mode->number |= (1<<15);	
+		} else {
+			/* Update mode size */
+			current_mode->width = blow_mode->width +1;
+			current_mode->height = blow_mode->height +1;
+		}
+
+		current_mode++;
+	}
+}