Part 1 of Taito F3 32-to-16 conversion ...

src/mame/drivers/taito_f3.c

@@ -16,12 +16,13 @@
     - Sound doesn't work in RidingF/RingRage?
       (for RingRage it's probably a timing / cpu sync bug, if you go into test mode
        for a while then exit you'll have sound, this doesn't work on RidingF)
-    - It does work in ringrage but you have to enter test mode first
+      \- It does work in ringrage but you have to enter test mode first
     - Sound balance is not emulated (see arabianm test mode)
     - When playing space invaders dx in original mode, t.t. with overlay, the
     alpha blending effect is wrong (see Taito B version of game)
     - Bubble Symphony has an alpha transition effect that doesn't appear in Mame
     - Various other missing blending effects (see Mametesters)
+    - Find how this HW drives the CRTC, and convert video timings to use screen raw params;
 
     Feel free to report any other issues to me.
 
@@ -161,8 +162,8 @@ static ADDRESS_MAP_START( f3_map, AS_PROGRAM, 32 )
 	AM_RANGE(0x61e000, 0x61ffff) AM_RAM_WRITE(f3_vram_w) AM_BASE_MEMBER(taito_f3_state, m_f3_vram)
 	AM_RANGE(0x620000, 0x62ffff) AM_RAM_WRITE(f3_lineram_w) AM_BASE_MEMBER(taito_f3_state, m_f3_line_ram)
 	AM_RANGE(0x630000, 0x63ffff) AM_RAM_WRITE(f3_pivot_w) AM_BASE_MEMBER(taito_f3_state, m_f3_pivot_ram)
-	AM_RANGE(0x660000, 0x66000f) AM_WRITE(f3_control_0_w)
+	AM_RANGE(0x660000, 0x66000f) AM_WRITE16(f3_control_0_w,0xffffffff)
-	AM_RANGE(0x660010, 0x66001f) AM_WRITE(f3_control_1_w)
+	AM_RANGE(0x660010, 0x66001f) AM_WRITE16(f3_control_1_w,0xffffffff)
 	AM_RANGE(0xc00000, 0xc007ff) AM_RAM AM_SHARE("f3_shared")
 	AM_RANGE(0xc80000, 0xc80003) AM_WRITE(f3_sound_reset_0_w)
 	AM_RANGE(0xc80100, 0xc80103) AM_WRITE(f3_sound_reset_1_w)

src/mame/includes/taito_f3.h

@@ -62,8 +62,8 @@ public:
 	tilemap_t *m_pixel_layer;
 	tilemap_t *m_vram_layer;
 	UINT32 *m_spriteram32_buffered;
-	UINT32 m_f3_control_0[8];
+	UINT16 m_f3_control_0[8];
-	UINT32 m_f3_control_1[8];
+	UINT16 m_f3_control_1[8];
 	int m_flipscreen;
 	UINT8 m_sprite_extra_planes;
 	UINT8 m_sprite_pen_mask;
@@ -193,8 +193,8 @@ VIDEO_START( f3 );
 SCREEN_UPDATE( f3 );
 SCREEN_EOF( f3 );
 
-WRITE32_HANDLER( f3_control_0_w );
+WRITE16_HANDLER( f3_control_0_w );
-WRITE32_HANDLER( f3_control_1_w );
+WRITE16_HANDLER( f3_control_1_w );
 WRITE32_HANDLER( f3_palette_24bit_w );
 WRITE32_HANDLER( f3_pf_data_w );
 WRITE32_HANDLER( f3_vram_w );

src/mame/video/taito_f3.c

@@ -325,6 +325,7 @@ static void init_alpha_blend_func(running_machine &machine);
 
 /******************************************************************************/
 
+/* TODO: fix shifting there */
 static void print_debug_info(running_machine &machine, bitmap_t *bitmap)
 {
 	taito_f3_state *state = machine.driver_data<taito_f3_state>();
@@ -708,13 +709,13 @@ WRITE32_HANDLER( f3_pf_data_w )
 	}
 }
 
-WRITE32_HANDLER( f3_control_0_w )
+WRITE16_HANDLER( f3_control_0_w )
 {
 	taito_f3_state *state = space->machine().driver_data<taito_f3_state>();
 	COMBINE_DATA(&state->m_f3_control_0[offset]);
 }
 
-WRITE32_HANDLER( f3_control_1_w )
+WRITE16_HANDLER( f3_control_1_w )
 {
 	taito_f3_state *state = space->machine().driver_data<taito_f3_state>();
 	COMBINE_DATA(&state->m_f3_control_1[offset]);
@@ -3165,21 +3166,21 @@ SCREEN_UPDATE( f3 )
 	tilemap_set_flip_all(screen->machine(),state->m_flipscreen ? (TILEMAP_FLIPY | TILEMAP_FLIPX) : 0);
 
 	/* Setup scroll */
-	sy_fix[0]=((state->m_f3_control_0[2]&0xffff0000)>> 7) + (1<<16);
+	sy_fix[0]=((state->m_f3_control_0[4]&0xffff)<< 9) + (1<<16);
-	sy_fix[1]=((state->m_f3_control_0[2]&0x0000ffff)<< 9) + (1<<16);
+	sy_fix[1]=((state->m_f3_control_0[5]&0xffff)<< 9) + (1<<16);
-	sy_fix[2]=((state->m_f3_control_0[3]&0xffff0000)>> 7) + (1<<16);
+	sy_fix[2]=((state->m_f3_control_0[6]&0xffff)<< 9) + (1<<16);
-	sy_fix[3]=((state->m_f3_control_0[3]&0x0000ffff)<< 9) + (1<<16);
+	sy_fix[3]=((state->m_f3_control_0[7]&0xffff)<< 9) + (1<<16);
-	sx_fix[0]=((state->m_f3_control_0[0]&0xffc00000)>> 6) - (6<<16);
+	sx_fix[0]=((state->m_f3_control_0[0]&0xffc0)<<10) - (6<<16);
-	sx_fix[1]=((state->m_f3_control_0[0]&0x0000ffc0)<<10) - (10<<16);
+	sx_fix[1]=((state->m_f3_control_0[1]&0xffc0)<<10) - (10<<16);
-	sx_fix[2]=((state->m_f3_control_0[1]&0xffc00000)>> 6) - (14<<16);
+	sx_fix[2]=((state->m_f3_control_0[2]&0xffc0)<<10) - (14<<16);
-	sx_fix[3]=((state->m_f3_control_0[1]&0x0000ffc0)<<10) - (18<<16);
+	sx_fix[3]=((state->m_f3_control_0[3]&0xffc0)<<10) - (18<<16);
-	sx_fix[4]=-(state->m_f3_control_1[2]>>16)+41;
+	sx_fix[4]=-(state->m_f3_control_1[4])+41;
-	sy_fix[4]=-(state->m_f3_control_1[2]&0x1ff);
+	sy_fix[4]=-(state->m_f3_control_1[5]&0x1ff);
 
-	sx_fix[0]-=((state->m_f3_control_0[0]&0x003f0000)>> 6)+0x0400-0x10000;
+	sx_fix[0]-=((state->m_f3_control_0[0]&0x003f)<<10)+0x0400-0x10000;
-	sx_fix[1]-=((state->m_f3_control_0[0]&0x0000003f)<<10)+0x0400-0x10000;
+	sx_fix[1]-=((state->m_f3_control_0[1]&0x003f)<<10)+0x0400-0x10000;
-	sx_fix[2]-=((state->m_f3_control_0[1]&0x003f0000)>> 6)+0x0400-0x10000;
+	sx_fix[2]-=((state->m_f3_control_0[2]&0x003f)<<10)+0x0400-0x10000;
-	sx_fix[3]-=((state->m_f3_control_0[1]&0x0000003f)<<10)+0x0400-0x10000;
+	sx_fix[3]-=((state->m_f3_control_0[3]&0x003f)<<10)+0x0400-0x10000;
 
 	if (state->m_flipscreen)
 	{