diff --git a/src/mame/drivers/ssv.cpp b/src/mame/drivers/ssv.cpp
index 594f65a25e1..a05ab4313a6 100644
--- a/src/mame/drivers/ssv.cpp
+++ b/src/mame/drivers/ssv.cpp
@@ -484,9 +484,9 @@ static ADDRESS_MAP_START( gdfs_map, AS_PROGRAM, 16, ssv_state )
 	AM_RANGE(0x500000, 0x500001) AM_WRITE(gdfs_eeprom_w)
 	AM_RANGE(0x540000, 0x540001) AM_READ(gdfs_eeprom_r)
 	AM_RANGE(0x600000, 0x600fff) AM_RAM
-	AM_RANGE(0x800000, 0x87ffff) AM_DEVREADWRITE( "st0020_spr", st0020_device, st0020_sprram_r, st0020_sprram_w );
-	AM_RANGE(0x8c0000, 0x8c00ff) AM_DEVREADWRITE( "st0020_spr", st0020_device, st0020_blitram_r, st0020_blitram_w );
-	AM_RANGE(0x900000, 0x9fffff) AM_DEVREADWRITE( "st0020_spr", st0020_device, st0020_gfxram_r, st0020_gfxram_w );
+	AM_RANGE(0x800000, 0x87ffff) AM_DEVREADWRITE( "st0020_spr", st0020_device, sprram_r, sprram_w );
+	AM_RANGE(0x8c0000, 0x8c00ff) AM_DEVREADWRITE( "st0020_spr", st0020_device, regs_r,   regs_w   );
+	AM_RANGE(0x900000, 0x9fffff) AM_DEVREADWRITE( "st0020_spr", st0020_device, gfxram_r, gfxram_w );
 	SSV_MAP( 0xc00000 )
 ADDRESS_MAP_END
 
diff --git a/src/mame/video/ssv.cpp b/src/mame/video/ssv.cpp
index 9057c09ac3b..ed500fd9c3e 100644
--- a/src/mame/video/ssv.cpp
+++ b/src/mame/video/ssv.cpp
@@ -962,7 +962,7 @@ uint32_t ssv_state::screen_update_gdfs(screen_device &screen, bitmap_ind16 &bitm
 	screen_update(screen, bitmap, cliprect);
 
 	// draw zooming sprites
-	m_gdfs_st0020->st0020_draw_all(bitmap, cliprect);
+	m_gdfs_st0020->update_screen(screen, bitmap, cliprect, false);
 
 	m_gdfs_tmap->set_scrollx(0, m_gdfs_tmapscroll[0x0c/2]);
 	m_gdfs_tmap->set_scrolly(0, m_gdfs_tmapscroll[0x10/2]);