Hack videoram to fix bitmap in radr (#1590)

src/vidhrdw/system32_vidhrdw.c

@@ -1559,13 +1559,19 @@ VIDEO_UPDATE( system32 ) {
 		struct GfxElement *gfx=Machine->gfx[0];
 
 		const pen_t *paldata = &gfx->colortable[0];
-/*
-		if ( code_pressed_memory(KEYCODE_C) )
+		static pen_t palcopy[MAX_COLOURS];
+		static int copy_videoram[57505];
+
+		if (paldata[0] == 16316664 && palcopy[0] != 16316664) /* copy palette and videoram for radr in ready state */
 		{
-			ppp++;
+			int i;
+			for(i = 0; i < MAX_COLOURS; i++)
+				 palcopy[i] = paldata[i];
 
+			for(i = 0; i < 57505; i++)
+				copy_videoram[i] = sys32_videoram[i];
 		}
-*/
+    
 		for ( ycnt = 0 ; ycnt < 224 ; ycnt ++ )
 		{
 			destline = (UINT32 *)(bitmap->line[ycnt]);
@@ -1575,11 +1581,18 @@ VIDEO_UPDATE( system32 ) {
 			{
 				int data2;
 
-				data2 = sys32_videoram[256*ycnt+xcnt];
-
-
-				destline[xcnt*2+1] = paldata[(data2 >> 8)+(0x100*0x1d)]; /* 1d00 */
-				destline[xcnt*2] = paldata[(data2 &0xff)+(0x100*0x1d)];
+				if (!strcmp(Machine->gamedrv->name,"radr")) /* replace with copies */
+				{
+					data2 = copy_videoram[256*ycnt+xcnt];
+					destline[xcnt*2+1] = palcopy[(data2 >> 8)+(0x100*0x1d)]; /* 1d00 */
+					destline[xcnt*2] = palcopy[(data2 &0xff)+(0x100*0x1d)];
+				}
+				else if (!strcmp(Machine->gamedrv->name,"radm"))
+				{
+					data2 = sys32_videoram[256*ycnt+xcnt];
+					destline[xcnt*2+1] = paldata[(data2 >> 8)+(0x100*0x1d)]; /* 1d00 */
+					destline[xcnt*2] = paldata[(data2 &0xff)+(0x100*0x1d)];
+				}
 			}
 
 		}