From 35626996bcbac3beabb321576dc52fd0a0f55198 Mon Sep 17 00:00:00 2001
From: Miodrag Milanovic <mmicko@gmail.com>
Date: Thu, 5 Aug 2010 09:44:25 +0000
Subject: [PATCH] - Updated SAA5050 to form 12x20 chars as noted in
 documentation [Miodrag Milanovic] - Updated malzak driver to support SAA5050
 changes

---
 src/emu/video/saa5050.c   |  6 +++---
 src/mame/drivers/malzak.c |  4 ++--
 src/mame/video/malzak.c   | 34 +++++++++++++++++++++-------------
 3 files changed, 26 insertions(+), 18 deletions(-)

diff --git a/src/emu/video/saa5050.c b/src/emu/video/saa5050.c
index 52a1ad650d2..9c14bcf4892 100644
--- a/src/emu/video/saa5050.c
+++ b/src/emu/video/saa5050.c
@@ -319,12 +319,12 @@ void saa5050_update( running_device *device, bitmap_t *bitmap, const rectangle *
 			{
 				if (saa5050->flags & SAA5050_DBLHI)
 				{
-					drawgfx_opaque(bitmap, cliprect, saa5050->screen->machine->gfx[saa5050->gfxnum + 1], code, colour, 0, 0, sx * 6, ssy * 10);
-					drawgfx_opaque(bitmap, cliprect, saa5050->screen->machine->gfx[saa5050->gfxnum + 2], code, colour, 0, 0, sx * 6, (ssy + 1) * 10);
+					drawgfxzoom_opaque(bitmap, cliprect, saa5050->screen->machine->gfx[saa5050->gfxnum + 1], code, colour, 0, 0, sx * 12, ssy * 20, 0x20000, 0x20000);
+					drawgfxzoom_opaque(bitmap, cliprect, saa5050->screen->machine->gfx[saa5050->gfxnum + 2], code, colour, 0, 0, sx * 12, (ssy + 1) * 20, 0x20000, 0x20000);
 				}
 				else
 				{
-					drawgfx_opaque(bitmap, cliprect, saa5050->screen->machine->gfx[saa5050->gfxnum + 0], code, colour, 0, 0, sx * 6, ssy * 10);
+					drawgfxzoom_opaque(bitmap, cliprect, saa5050->screen->machine->gfx[saa5050->gfxnum + 0], code, colour, 0, 0, sx * 12, ssy * 20, 0x20000, 0x20000);
 				}
 			}
 		}
diff --git a/src/mame/drivers/malzak.c b/src/mame/drivers/malzak.c
index 639d708da51..c5e81a07b8b 100644
--- a/src/mame/drivers/malzak.c
+++ b/src/mame/drivers/malzak.c
@@ -409,8 +409,8 @@ static MACHINE_DRIVER_START( malzak )
 	MDRV_SCREEN_REFRESH_RATE(50)
 	//MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(SAA5050_VBLANK))
 	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
-	MDRV_SCREEN_SIZE(240, 256)	/* vert size is a guess */
-	MDRV_SCREEN_VISIBLE_AREA(0, 239, 0, 239)
+	MDRV_SCREEN_SIZE(480, 512)	/* vert size is a guess */
+	MDRV_SCREEN_VISIBLE_AREA(0, 479, 0, 479)
 
 	MDRV_GFXDECODE(malzak)
 	MDRV_PALETTE_LENGTH(128)
diff --git a/src/mame/video/malzak.c b/src/mame/video/malzak.c
index 7cb4ba1eda8..9f99b6fe59a 100644
--- a/src/mame/video/malzak.c
+++ b/src/mame/video/malzak.c
@@ -35,15 +35,15 @@ VIDEO_UPDATE( malzak )
 	for (x = 0; x < 16; x++)
 		for (y = 0; y < 16; y++)
 		{
-			sx = ((x * 16 - 48) - state->malzak_x);
-			sy = ((y * 16) - state->malzak_y);
+			sx = ((x * 16 - 48) - state->malzak_x) * 2;
+			sy = ((y * 16) - state->malzak_y) * 2;
 
-			if (sx < -271)
-				sx += 512;
-			if (sx < -15)
-				sx += 256;
+			if (sx < -271*2)
+				sx += 512*2;
+			if (sx < -15*2)
+				sx += 256*2;
 
-			drawgfx_transpen(bitmap,cliprect, screen->machine->gfx[0], state->playfield_code[x * 16 + y], 7, 0, 0, sx, sy, 0);
+			drawgfxzoom_transpen(bitmap,cliprect, screen->machine->gfx[0], state->playfield_code[x * 16 + y], 7*2, 0, 0, sx, sy, 0x20000, 0x20000, 0);
 		}
 
 	/* update the S2636 chips */
@@ -54,20 +54,28 @@ VIDEO_UPDATE( malzak )
 	{
 		int y;
 
-		for (y = cliprect->min_y; y <= cliprect->max_y; y++)
+		for (y = cliprect->min_y; y <= cliprect->max_y / 2; y++)
 		{
 			int x;
 
-			for (x = cliprect->min_x; x <= cliprect->max_x; x++)
+			for (x = cliprect->min_x; x <= cliprect->max_x / 2; x++)
 			{
 				int pixel0 = *BITMAP_ADDR16(s2636_0_bitmap, y, x);
 				int pixel1 = *BITMAP_ADDR16(s2636_1_bitmap, y, x);
 
-				if (S2636_IS_PIXEL_DRAWN(pixel0))
-					*BITMAP_ADDR16(bitmap, y, x) = S2636_PIXEL_COLOR(pixel0);
+				if (S2636_IS_PIXEL_DRAWN(pixel0)) {
+					*BITMAP_ADDR16(bitmap, y*2, x*2) = S2636_PIXEL_COLOR(pixel0);
+					*BITMAP_ADDR16(bitmap, y*2+1, x*2) = S2636_PIXEL_COLOR(pixel0);
+					*BITMAP_ADDR16(bitmap, y*2, x*2+1) = S2636_PIXEL_COLOR(pixel0);
+					*BITMAP_ADDR16(bitmap, y*2+1, x*2+1) = S2636_PIXEL_COLOR(pixel0);
+				}
 
-				if (S2636_IS_PIXEL_DRAWN(pixel1))
-					*BITMAP_ADDR16(bitmap, y, x) = S2636_PIXEL_COLOR(pixel1);
+				if (S2636_IS_PIXEL_DRAWN(pixel1)) {
+					*BITMAP_ADDR16(bitmap, y*2, x*2) = S2636_PIXEL_COLOR(pixel1);
+					*BITMAP_ADDR16(bitmap, y*2+1, x*2) = S2636_PIXEL_COLOR(pixel1);
+					*BITMAP_ADDR16(bitmap, y*2, x*2+1) = S2636_PIXEL_COLOR(pixel1);
+					*BITMAP_ADDR16(bitmap, y*2+1, x*2+1) = S2636_PIXEL_COLOR(pixel1);
+				}
 			}
 		}
 	}