diff --git a/src/add-ons/accelerants/via/ProposeDisplayMode.c b/src/add-ons/accelerants/via/ProposeDisplayMode.c
new file mode 100644
index 0000000000..bfd43ff94c
--- /dev/null
+++ b/src/add-ons/accelerants/via/ProposeDisplayMode.c
@@ -0,0 +1,597 @@
+/*
+	Copyright 1999, Be Incorporated.   All Rights Reserved.
+	This file may be used under the terms of the Be Sample Code License.
+
+	Other authors for NV driver:
+	Mark Watson,
+	Rudolf Cornelissen 9/2002-10/2004
+*/
+
+#define MODULE_BIT 0x00400000
+
+#include "acc_std.h"
+
+#define	T_POSITIVE_SYNC	(B_POSITIVE_HSYNC | B_POSITIVE_VSYNC)
+/* mode flags will be setup as status info by PROPOSEMODE! */
+#define MODE_FLAGS 0
+#define MODE_COUNT (sizeof (mode_list) / sizeof (display_mode))
+
+/*some monitors only handle a fixed set of modes*/
+#include "valid_mode_list"
+
+/* Standard VESA modes,
+ * plus panel specific resolution modes which are internally modified during run-time depending on the requirements of the actual
+ * panel connected. The modes as listed here, should timing-wise be as compatible with analog (CRT) monitors as can be... */
+static const display_mode mode_list[] = {
+/* 4:3 modes; 307.2k pixels */
+{ { 25175, 640, 656, 752, 800, 480, 490, 492, 525, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(640X480X8.Z1) */
+{ { 27500, 640, 672, 768, 864, 480, 488, 494, 530, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* 640X480X60Hz */
+{ { 30500, 640, 672, 768, 864, 480, 517, 523, 588, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* SVGA_640X480X60HzNI */
+{ { 31500, 640, 664, 704, 832, 480, 489, 492, 520, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70-72Hz_(640X480X8.Z1) */
+{ { 31500, 640, 656, 720, 840, 480, 481, 484, 500, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(640X480X8.Z1) */
+{ { 36000, 640, 696, 752, 832, 480, 481, 484, 509, 0}, B_CMAP8, 640, 480, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(640X480X8.Z1) */
+/* 4:3 modes; 480k pixels */
+{ { 36000, 800, 824, 896, 1024, 600, 601, 603, 625, 0}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@56Hz_(800X600) from Be, Inc. driver + XFree86 */
+{ { 38100, 800, 832, 960, 1088, 600, 602, 606, 620, 0}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* SVGA_800X600X56HzNI */
+{ { 40000, 800, 840, 968, 1056, 600, 601, 605, 628, T_POSITIVE_SYNC}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(800X600X8.Z1) + XFree86 */
+{ { 49500, 800, 816, 896, 1056, 600, 601, 604, 625, T_POSITIVE_SYNC}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(800X600X8.Z1) + XFree86 */
+{ { 50000, 800, 856, 976, 1040, 600, 637, 643, 666, T_POSITIVE_SYNC}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70-72Hz_(800X600X8.Z1) + XFree86 */
+{ { 56250, 800, 832, 896, 1048, 600, 601, 604, 631, T_POSITIVE_SYNC}, B_CMAP8, 800, 600, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(800X600X8.Z1) + XFree86 */
+/* 4:3 modes; 786.432k pixels */
+{ { 65000, 1024, 1048, 1184, 1344, 768, 771, 777, 806, 0}, B_CMAP8, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1024X768X8.Z1) + XFree86 */
+{ { 75000, 1024, 1048, 1184, 1328, 768, 771, 777, 806, 0}, B_CMAP8, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70-72Hz_(1024X768X8.Z1) + XFree86 */
+{ { 78750, 1024, 1040, 1136, 1312, 768, 769, 772, 800, T_POSITIVE_SYNC}, B_CMAP8, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1024X768X8.Z1) + XFree86 */
+{ { 94500, 1024, 1072, 1168, 1376, 768, 769, 772, 808, T_POSITIVE_SYNC}, B_CMAP8, 1024, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1024X768X8.Z1) + XFree86 */
+/* 4:3 modes; 995.328k pixels */
+{ { 94200, 1152, 1184, 1280, 1472, 864, 865, 868, 914, T_POSITIVE_SYNC}, B_CMAP8, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70Hz_(1152X864X8.Z1) */
+{ { 97800, 1152, 1216, 1344, 1552, 864, 865, 868, 900, T_POSITIVE_SYNC}, B_CMAP8, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70Hz_(1152X864X8.Z1) */
+{ { 108000, 1152, 1216, 1344, 1600, 864, 865, 868, 900, T_POSITIVE_SYNC}, B_CMAP8, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1152X864X8.Z1) + XFree86 */
+{ { 121500, 1152, 1216, 1344, 1568, 864, 865, 868, 911, T_POSITIVE_SYNC}, B_CMAP8, 1152, 864, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1152X864X8.Z1) */
+/* 5:4 modes; 1.311M pixels */
+{ { 108000, 1280, 1328, 1440, 1688, 1024, 1025, 1028, 1066, T_POSITIVE_SYNC}, B_CMAP8, 1280, 1024, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1280X1024) from Be, Inc. driver + XFree86 */
+{ { 135000, 1280, 1296, 1440, 1688, 1024, 1025, 1028, 1066, T_POSITIVE_SYNC}, B_CMAP8, 1280, 1024, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1280X1024X8.Z1) + XFree86 */
+{ { 157500, 1280, 1344, 1504, 1728, 1024, 1025, 1028, 1072, T_POSITIVE_SYNC}, B_CMAP8, 1280, 1024, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@85Hz_(1280X1024X8.Z1) + XFree86 */
+/* 4:3 panel mode; 1.47M pixels */
+{ { 122600, 1400, 1488, 1640, 1880, 1050, 1051, 1054, 1087, T_POSITIVE_SYNC}, B_CMAP8, 1400, 1050, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1400X1050) */
+/* 4:3 modes; 1.92M pixels */
+{ { 162000, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1600X1200X8.Z1) + XFree86 */
+/* identical lines to above one, apart from refreshrate.. */
+{ { 175500, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@65Hz_(1600X1200X8.Z1) + XFree86 */
+{ { 189000, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@70Hz_(1600X1200X8.Z1) + XFree86 */
+{ { 202500, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1600X1200X8.Z1) + XFree86 */
+{ { 216000, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@80Hz_(1600X1200X8.Z1) */
+{ { 229500, 1600, 1664, 1856, 2160, 1200, 1201, 1204, 1250, T_POSITIVE_SYNC}, B_CMAP8, 1600, 1200, 0, 0, MODE_FLAGS},  /* Vesa_Monitor_@85Hz_(1600X1200X8.Z1) + XFree86 */
+/* end identical lines. */
+/* 4:3 modes; 2.408M pixels */
+{ { 204750, 1792, 1920, 2120, 2448, 1344, 1345, 1348, 1394, B_POSITIVE_VSYNC}, B_CMAP8, 1792, 1344, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1792X1344) from Be, Inc. driver + XFree86 */
+{ { 261000, 1792, 1888, 2104, 2456, 1344, 1345, 1348, 1417, B_POSITIVE_VSYNC}, B_CMAP8, 1792, 1344, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1792X1344) from Be, Inc. driver + XFree86 */
+/* 4:3 modes; 2.584M pixels */
+{ { 218250, 1856, 1952, 2176, 2528, 1392, 1393, 1396, 1439, B_POSITIVE_VSYNC}, B_CMAP8, 1856, 1392, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1856X1392) from Be, Inc. driver + XFree86 */
+{ { 288000, 1856, 1984, 2208, 2560, 1392, 1393, 1396, 1500, B_POSITIVE_VSYNC}, B_CMAP8, 1856, 1392, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1856X1392) from Be, Inc. driver + XFree86 */
+/* 4:3 modes; 2.765M pixels */
+{ { 234000, 1920, 2048, 2256, 2600, 1440, 1441, 1444, 1500, B_POSITIVE_VSYNC}, B_CMAP8, 1920, 1440, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1920X1440) from Be, Inc. driver + XFree86 */
+{ { 297000, 1920, 2064, 2288, 2640, 1440, 1441, 1444, 1500, B_POSITIVE_VSYNC}, B_CMAP8, 1920, 1440, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@75Hz_(1920X1440) from Be, Inc. driver + XFree86 */
+/* 4:3 modes; 3.146M pixels */
+{ { 266950, 2048, 2200, 2424, 2800, 1536, 1537, 1540, 1589, B_POSITIVE_VSYNC}, B_CMAP8, 2048, 1536, 0, 0, MODE_FLAGS}, /* From XFree86 posting @60Hz + XFree86 */
+/* 16:10 panel mode; 400k pixels */
+{ { 31300, 800, 848, 928, 1008, 500, 501, 504, 518, T_POSITIVE_SYNC}, B_CMAP8, 800, 500, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(800X500) */
+/* 16:10 panel mode; 655.36k pixels */
+{ { 52800, 1024, 1072, 1176, 1328, 640, 641, 644, 663, T_POSITIVE_SYNC}, B_CMAP8, 1024, 640, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1024X640) */
+/* 16:10 panel-TV mode; 983.04k pixels */
+{ { 80135, 1280, 1344, 1480, 1680, 768, 769, 772, 795, T_POSITIVE_SYNC}, B_CMAP8, 1280, 768, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1280X768) */
+/* 16:10 panel mode; 1.024M pixels */
+{ { 83500, 1280, 1344, 1480, 1680, 800, 801, 804, 828, T_POSITIVE_SYNC}, B_CMAP8, 1280, 800, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1280X800) */
+/* 16:10 panel mode; 1.296M pixels */
+{ { 106500, 1440, 1520, 1672, 1904, 900, 901, 904, 932, T_POSITIVE_SYNC}, B_CMAP8, 1440, 900, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1440X900) */
+/* 16:10 panel mode; 1.764M pixels */
+{ { 147100, 1680, 1784, 1968, 2256, 1050, 1051, 1054, 1087, T_POSITIVE_SYNC}, B_CMAP8, 1680, 1050, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1680X1050) */
+/* 16:10 panel mode; 2.304M pixels */
+{ { 193200, 1920, 2048, 2256, 2592, 1200, 1201, 1204, 1242, T_POSITIVE_SYNC}, B_CMAP8, 1920, 1200, 0, 0, MODE_FLAGS}, /* Vesa_Monitor_@60Hz_(1920X1200) */
+};
+
+/*
+Check mode is between low and high limits
+returns:
+	B_OK - found one
+	B_BAD_VALUE - mode can be made, but outside limits
+	B_ERROR - not possible
+*/
+/* BOUNDS WARNING:
+ * BeOS (tested R5.0.3PE) is failing BWindowScreen.SetFrameBuffer() if PROPOSEMODE
+ * returns B_BAD_VALUE. It's called by the OS with target, low and high set to
+ * have the same settings for BWindowScreen!
+ * Which means we should not return B_BAD_VALUE on anything except for deviations on:
+ * display_mode.virtual_width;
+ * display_mode.virtual_height;
+ * display_mode.timing.h_display;
+ * display_mode.timing.v_display;
+ */
+/* Note:
+ * The target mode should be modified to correspond to the mode as it can be made. */
+status_t PROPOSE_DISPLAY_MODE(display_mode *target, const display_mode *low, const display_mode *high) 
+{
+	status_t status = B_OK;
+	float pix_clock_found, target_aspect;
+	uint8 m,n,p, bpp;
+	status_t result;
+	uint32 max_vclk, row_bytes, pointer_reservation;
+	bool acc_mode;
+	double target_refresh = ((double)target->timing.pixel_clock * 1000.0) /
+			(
+				(double)target->timing.h_total * 
+				(double)target->timing.v_total
+			);
+	bool
+		want_same_width = target->timing.h_display == target->virtual_width,
+		want_same_height = target->timing.v_display == target->virtual_height;
+
+	LOG(1, ("PROPOSEMODE: (ENTER) requested virtual_width %d, virtual_height %d\n",
+									target->virtual_width, target->virtual_height));
+
+	/*check valid list:
+		if (VALID_REQUIRED is set)
+		{
+			if (find modes with same size)
+			{
+				pick one with nearest pixel clock
+			}
+			else
+			{
+				pick next largest with nearest pixel clock and modify visible portion as far as possible
+			}
+		}
+	*/
+	#ifdef VALID_MODE_REQUIRED
+	{
+		int i;
+		int closest_mode_ptr;
+		uint32 closest_mode_clock;
+
+		LOG(1, ("PROPOSEMODE: valid mode required!\n"));
+
+		closest_mode_ptr = 0xbad;
+		closest_mode_clock = 0;
+		for (i=0;i<VALID_MODES;i++)
+		{
+			/*check size is ok and clock is better than any found before*/
+			if(
+				target->timing.h_display==valid_mode_list[i].h_display &&
+				target->timing.v_display==valid_mode_list[i].v_display
+			)
+			{
+				if (
+					abs(valid_mode_list[i].pixel_clock-target->timing.pixel_clock)<
+					abs(closest_mode_clock-target->timing.pixel_clock)
+				)
+				{
+					closest_mode_clock=valid_mode_list[i].pixel_clock;
+					closest_mode_ptr=i;
+				}
+			}
+		}
+
+		if (closest_mode_ptr==0xbad)/*if no modes of correct size*/
+		{
+			LOG(4, ("PROPOSEMODE: no valid mode found, aborted.\n"));
+			return B_ERROR;
+		}
+		else
+		{
+			target->timing=valid_mode_list[closest_mode_ptr];
+			target_refresh = ((double)target->timing.pixel_clock * 1000.0) /  /*I require this refresh*/
+			((double)target->timing.h_total * (double)target->timing.v_total);
+		}
+	}	
+	#endif
+
+	/*find a nearby valid timing from that given*/
+	result = head1_validate_timing
+	(
+		&target->timing.h_display, &target->timing.h_sync_start, &target->timing.h_sync_end, &target->timing.h_total,
+		&target->timing.v_display, &target->timing.v_sync_start, &target->timing.v_sync_end, &target->timing.v_total
+	);
+	if (result == B_ERROR)
+	{
+		LOG(4, ("PROPOSEMODE: could not validate timing, aborted.\n"));
+		return result;
+	}
+
+	/* check if all connected output devices can display the requested mode's aspect: */
+	/* calculate display mode aspect */
+	target_aspect = (target->timing.h_display / ((float)target->timing.v_display));
+	/* NOTE:
+	 * allow 0.10 difference so 5:4 aspect panels will be able to use 4:3 aspect modes! */
+	switch (si->ps.monitors)
+	{
+	case 0x01: /* digital panel on head 1, nothing on head 2 */
+		if (si->ps.panel1_aspect < (target_aspect - 0.10))
+		{
+			LOG(4, ("PROPOSEMODE: connected panel1 is not widescreen type, aborted.\n"));
+			return B_ERROR;
+		}
+		break;
+	case 0x10: /* nothing on head 1, digital panel on head 2 */
+		if (si->ps.panel2_aspect < (target_aspect - 0.10))
+		{
+			LOG(4, ("PROPOSEMODE: connected panel2 is not widescreen type, aborted.\n"));
+			return B_ERROR;
+		}
+		break;
+	case 0x11: /* digital panels on both heads */
+		if ((si->ps.panel1_aspect < (target_aspect - 0.10)) ||
+			(si->ps.panel2_aspect < (target_aspect - 0.10)))
+		{
+			LOG(4, ("PROPOSEMODE: not all connected panels are widescreen type, aborted.\n"));
+			return B_ERROR;
+		}
+		break;
+	default: /* at least one analog monitor is connected, or nothing detected at all */
+		if (target_aspect > 1.34)
+		{
+			LOG(4, ("PROPOSEMODE: not all output devices can display widescreen modes, aborted.\n"));
+			return B_ERROR;
+		}
+		break;
+	}
+
+	/* only export widescreen panel-TV modes when an exact resolution match exists,
+	 * to prevent the modelist from becoming too crowded */
+	if (target_aspect > 1.61)
+	{
+		status_t panel_TV_stat = B_ERROR;
+
+		if (si->ps.tmds1_active)
+		{
+			if ((target->timing.h_display == si->ps.p1_timing.h_display) &&
+				(target->timing.v_display == si->ps.p1_timing.v_display))
+			{
+				panel_TV_stat = B_OK;
+			}
+		}
+		if (si->ps.tmds2_active)
+		{
+			if ((target->timing.h_display == si->ps.p2_timing.h_display) &&
+				(target->timing.v_display == si->ps.p2_timing.v_display))
+			{
+				panel_TV_stat = B_OK;
+			}
+		}
+		if (panel_TV_stat != B_OK)
+		{
+			LOG(4, ("PROPOSEMODE: WS panel_TV mode requested but no such TV here, aborted.\n"));
+			return B_ERROR;
+		}
+	}
+
+	/* check if panel(s) can display the requested resolution (if connected) */
+	if (si->ps.tmds1_active)
+	{
+		if ((target->timing.h_display > si->ps.p1_timing.h_display) ||
+			(target->timing.v_display > si->ps.p1_timing.v_display))
+		{
+			LOG(4, ("PROPOSEMODE: panel1 can't display requested resolution, aborted.\n"));
+			return B_ERROR;
+		}
+	}
+	if (si->ps.tmds2_active)
+	{
+		if ((target->timing.h_display > si->ps.p2_timing.h_display) ||
+			(target->timing.v_display > si->ps.p2_timing.v_display))
+		{
+			LOG(4, ("PROPOSEMODE: panel2 can't display requested resolution, aborted.\n"));
+			return B_ERROR;
+		}
+	}
+
+	/* validate display vs. virtual */
+	if ((target->timing.h_display > target->virtual_width) || want_same_width)
+		target->virtual_width = target->timing.h_display;
+	if ((target->timing.v_display > target->virtual_height) || want_same_height)
+		target->virtual_height = target->timing.v_display;
+
+	/* nail virtual size and 'subsequently' calculate rowbytes */
+	result = eng_general_validate_pic_size (target, &row_bytes, &acc_mode);
+	if (result == B_ERROR)
+	{
+		LOG(4, ("PROPOSEMODE: could not validate virtual picture size, aborted.\n"));
+		return result;
+	}
+
+	/*check if virtual_width is still within the requested limits*/
+	if ((target->virtual_width < low->virtual_width) ||
+		(target->virtual_width > high->virtual_width))
+	{
+		status = B_BAD_VALUE;
+		LOG(4, ("PROPOSEMODE: WARNING: virtual_width deviates too much\n"));
+	}
+
+	/*check if timing found is within the requested horizontal limits*/
+	if ((target->timing.h_display < low->timing.h_display) ||
+		(target->timing.h_display > high->timing.h_display) ||
+		(target->timing.h_sync_start < low->timing.h_sync_start) ||
+		(target->timing.h_sync_start > high->timing.h_sync_start) ||
+		(target->timing.h_sync_end < low->timing.h_sync_end) ||
+		(target->timing.h_sync_end > high->timing.h_sync_end) ||
+		(target->timing.h_total < low->timing.h_total) ||
+		(target->timing.h_total > high->timing.h_total))
+	{
+		/* BWindowScreen workaround: we accept everything except h_display deviations */
+		if ((target->timing.h_display < low->timing.h_display) ||
+			(target->timing.h_display > high->timing.h_display))
+		{		
+			status = B_BAD_VALUE;
+		}
+		else
+		{
+			status = B_OK;
+		}
+		LOG(4, ("PROPOSEMODE: WARNING: horizontal timing deviates too much\n"));
+	}
+
+	/*check if timing found is within the requested vertical limits*/
+	if (
+		(target->timing.v_display < low->timing.v_display) ||
+		(target->timing.v_display > high->timing.v_display) ||
+		(target->timing.v_sync_start < low->timing.v_sync_start) ||
+		(target->timing.v_sync_start > high->timing.v_sync_start) ||
+		(target->timing.v_sync_end < low->timing.v_sync_end) ||
+		(target->timing.v_sync_end > high->timing.v_sync_end) ||
+		(target->timing.v_total < low->timing.v_total) ||
+		(target->timing.v_total > high->timing.v_total)
+	)
+	{
+		/* BWindowScreen workaround: we accept everything except v_display deviations */
+		if ((target->timing.v_display < low->timing.v_display) ||
+			(target->timing.v_display > high->timing.v_display))
+		{		
+			status = B_BAD_VALUE;
+		}
+		else
+		{
+			status = B_OK;
+		}
+		LOG(4, ("PROPOSEMODE: WARNING: vertical timing deviates too much\n"));
+	}
+
+	/* adjust pixelclock for possible timing modifications done above */
+	target->timing.pixel_clock = target_refresh * ((double)target->timing.h_total) * ((double)target->timing.v_total) / 1000.0;
+
+	/* Now find the nearest valid pixelclock we actually can setup for the target mode,
+	 * this also makes sure we don't generate more pixel bandwidth than the device can handle */
+	/* calculate settings, but do not actually test anything (that costs too much time!) */
+	result = head1_pix_pll_find(*target,&pix_clock_found,&m,&n,&p,0);
+	/* update the target mode */
+	target->timing.pixel_clock = (pix_clock_found * 1000);	
+
+	/* note if we fell outside the limits */
+	if ((target->timing.pixel_clock < low->timing.pixel_clock) ||
+		(target->timing.pixel_clock > high->timing.pixel_clock)
+	)
+	{
+		/* BWindowScreen workaround: we accept deviations <= 1Mhz */
+		if ((target->timing.pixel_clock < (low->timing.pixel_clock - 1000)) ||
+			(target->timing.pixel_clock > (high->timing.pixel_clock + 1000)))
+		{
+			status = B_BAD_VALUE;
+		}
+		else
+		{
+			status = B_OK;
+		}
+		LOG(4, ("PROPOSEMODE: WARNING: pixelclock deviates too much\n"));
+	}
+
+	/* checkout space needed for hardcursor (if any) */
+	pointer_reservation = 0;
+	if (si->settings.hardcursor) pointer_reservation = 2048;
+	/* memory requirement for frame buffer */
+	if ((row_bytes * target->virtual_height) >
+		(si->ps.memory_size - pointer_reservation))
+	{
+		target->virtual_height = 
+			(si->ps.memory_size - pointer_reservation) / row_bytes;
+	}
+	if (target->virtual_height < target->timing.v_display) 
+	{
+		LOG(4,("PROPOSEMODE: not enough memory for current mode, aborted.\n"));
+		return B_ERROR;
+	}
+	LOG(4,("PROPOSEMODE: validated virtual_width %d, virtual_height %d pixels\n",
+		target->virtual_width, target->virtual_height));
+
+	if ((target->virtual_height < low->virtual_height) ||
+		(target->virtual_height > high->virtual_height))
+	{
+		status = B_BAD_VALUE;
+		LOG(4, ("PROPOSEMODE: WARNING: virtual_height deviates too much\n"));
+	}
+
+	/* setup status flags */ 
+	LOG(1, ("PROPOSEMODE: initial modeflags: $%08x\n", target->flags));
+	/* preset to singlehead card without TVout, no overlay support and no hardcursor.
+	 * also advice system that app_server and acc engine may touch the framebuffer
+	 * simultaneously (fixed). */
+	target->flags &=
+		~(DUALHEAD_CAPABLE | TV_CAPABLE | B_SUPPORTS_OVERLAYS | B_HARDWARE_CURSOR | B_IO_FB_NA);
+	/* we always allow parallel access (fixed), the DAC is always in 'enhanced'
+	 * mode (fixed), and all modes support DPMS (fixed);
+	 * We support scrolling and panning in every mode, so we 'send a signal' to
+	 * BWindowScreen.CanControlFrameBuffer() by setting B_SCROLL.  */
+	/* BTW: B_PARALLEL_ACCESS in combination with a hardcursor enables
+	 * BDirectWindow windowed modes. */
+	target->flags |= (B_PARALLEL_ACCESS | B_8_BIT_DAC | B_DPMS | B_SCROLL);
+
+	/* determine the 'would be' max. pixelclock for the second DAC for the current videomode if dualhead were activated */
+	switch (target->space)
+	{
+		case B_CMAP8:
+			max_vclk = si->ps.max_dac2_clock_8;
+			bpp = 1;
+			break;
+		case B_RGB15_LITTLE:
+		case B_RGB16_LITTLE:
+			max_vclk = si->ps.max_dac2_clock_16;
+			bpp = 2;
+			break;
+		case B_RGB24_LITTLE:
+			max_vclk = si->ps.max_dac2_clock_24;
+			bpp = 3;
+			break;
+		case B_RGB32_LITTLE:
+			max_vclk = si->ps.max_dac2_clock_32dh;
+			bpp = 4;
+			break;
+		default:
+			/* use fail-safe value */
+			max_vclk = si->ps.max_dac2_clock_32dh;
+			bpp = 4;
+			break;
+	}
+
+	/* set DUALHEAD_CAPABLE if suitable */
+	//fixme: update for independant secondary head use! (reserve fixed memory then)
+	if (si->ps.secondary_head && (target->timing.pixel_clock <= (max_vclk * 1000)))
+	{
+		switch (target->flags & DUALHEAD_BITS)
+		{
+		case DUALHEAD_ON:
+		case DUALHEAD_SWITCH:
+			if (((si->ps.memory_size - pointer_reservation) >=
+					(row_bytes * target->virtual_height)) &&
+			 	((uint16)(row_bytes / bpp) >= (target->timing.h_display * 2)))
+			{
+				target->flags |= DUALHEAD_CAPABLE;
+			}
+			break;
+		case DUALHEAD_CLONE:
+			if ((si->ps.memory_size - pointer_reservation) >=
+					(row_bytes * target->virtual_height))
+			{
+				target->flags |= DUALHEAD_CAPABLE;
+			}
+			break;
+		case DUALHEAD_OFF:
+			if ((si->ps.memory_size - pointer_reservation) >=
+					(row_bytes * target->virtual_height * 2))
+			{
+				target->flags |= DUALHEAD_CAPABLE;
+			}
+			break;
+		}
+	}
+
+	/* set TV_CAPABLE if suitable: pixelclock is not important (defined by TVstandard) */
+	//fixme: modify for G100 and G200 TVout later on...
+	if (target->flags & DUALHEAD_CAPABLE)
+	{
+		if (si->ps.tvout &&
+			(target->timing.h_display <= 1024) &&
+			(target->timing.v_display <= 768))
+		{
+			target->flags |= TV_CAPABLE;
+		}
+	}
+
+	/* set HARDWARE_CURSOR mode if suitable */
+	if (si->settings.hardcursor)
+		target->flags |= B_HARDWARE_CURSOR;
+
+	/* set SUPPORTS_OVERLAYS */
+	target->flags |= B_SUPPORTS_OVERLAYS;
+
+	LOG(1, ("PROPOSEMODE: validated status modeflags: $%08x\n", target->flags));
+
+	/* overrule timing command flags to be (fixed) blank_pedestal = 0.0IRE,
+	 * progressive scan (fixed), and sync_on_green not avaible. */
+	target->timing.flags &= ~(B_BLANK_PEDESTAL | B_TIMING_INTERLACED | B_SYNC_ON_GREEN);
+	/* The HSYNC and VSYNC command flags are actually executed by the driver. */
+
+	if (status == B_OK)	LOG(4, ("PROPOSEMODE: completed successfully.\n"));
+	else LOG(4, ("PROPOSEMODE: mode can be made, but outside given limits.\n"));
+	return status;
+}
+
+/* Return the number of modes this device will return from GET_MODE_LIST().  
+	This is precalculated in create_mode_list (called from InitAccelerant stuff)
+*/
+uint32 ACCELERANT_MODE_COUNT(void)
+{
+	LOG(1, ("ACCELERANT_MODE_COUNT: the modelist contains %d modes\n",si->mode_count));
+
+	return si->mode_count;
+}
+
+/* Copy the list of guaranteed supported video modes to the location provided.*/
+status_t GET_MODE_LIST(display_mode *dm)
+{
+	LOG(1, ("GET_MODE_LIST: exporting the modelist created before.\n"));
+
+	memcpy(dm, my_mode_list, si->mode_count * sizeof(display_mode));
+	return B_OK;
+}
+
+/* Create a list of display_modes to pass back to the caller.*/
+status_t create_mode_list(void)
+{
+	size_t max_size;
+	uint32
+		i, j,
+		pix_clk_range;
+	const display_mode
+		*src;
+	display_mode
+		*dst,
+		low,
+		high;
+
+	color_space spaces[4] = {B_RGB32_LITTLE,B_RGB16_LITTLE,B_RGB15_LITTLE,B_CMAP8};
+
+	/* figure out how big the list could be, and adjust up to nearest multiple of B_PAGE_SIZE */
+	max_size = (((MODE_COUNT * 4) * sizeof(display_mode)) + (B_PAGE_SIZE-1)) & ~(B_PAGE_SIZE-1);
+	/* create an area to hold the info */
+	si->mode_area = my_mode_list_area =
+		create_area("NV accelerant mode info", (void **)&my_mode_list, B_ANY_ADDRESS, max_size, B_NO_LOCK, B_READ_AREA | B_WRITE_AREA);
+	if (my_mode_list_area < B_OK) return my_mode_list_area;
+
+	/* walk through our predefined list and see which modes fit this device */
+	src = mode_list;
+	dst = my_mode_list;
+	si->mode_count = 0;
+	for (i = 0; i < MODE_COUNT; i++)
+	{
+		/* set ranges for acceptable values */
+		low = high = *src;
+		/* range is 6.25% of default clock: arbitrarily picked */ 
+		pix_clk_range = low.timing.pixel_clock >> 5;
+		low.timing.pixel_clock -= pix_clk_range;
+		high.timing.pixel_clock += pix_clk_range;
+		/* 'some cards need wider virtual widths for certain modes':
+		 * Not true. They might need a wider pitch, but this is _not_ reflected in
+		 * virtual_width, but in fbc.bytes_per_row. */
+		//So disable next line: 
+		//high.virtual_width = 4096;
+		/* do it once for each depth we want to support */
+		for (j = 0; j < (sizeof(spaces) / sizeof(color_space)); j++) 
+		{
+			/* set target values */
+			*dst = *src;
+			/* poke the specific space */
+			dst->space = low.space = high.space = spaces[j];
+			/* ask for a compatible mode */
+			/* We have to check for B_OK, because otherwise the pix_clk_range
+			 * won't be taken into account!! */
+			//So don't do this: 
+			//if (PROPOSE_DISPLAY_MODE(dst, &low, &high) != B_ERROR) {
+			//Instead, do this:
+			if (PROPOSE_DISPLAY_MODE(dst, &low, &high) == B_OK) {
+				/* count it, and move on to next mode */
+				dst++;
+				si->mode_count++;
+			}
+		}
+		/* advance to next mode */
+		src++;
+	}
+
+	return B_OK;
+}