diff --git a/src/mame/drivers/naomi.c b/src/mame/drivers/naomi.c
index f6817bbd628..1ef38139b8f 100644
--- a/src/mame/drivers/naomi.c
+++ b/src/mame/drivers/naomi.c
@@ -5783,7 +5783,7 @@ GAME( 2001, naomigd,   0,        naomi,    naomi,    naomi,   ROT0,   "Sega",
 
 /* GDL-xxxx ("licensed by Sega" games) */
 GAME( 2001, gundmgd,   naomigd,  naomigd,  naomi,    naomi,   ROT0,   "Capcom",                 "Mobile Suit Gundam: Federation VS Zeon (GDL-0001)", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
-GAME( 2001, sfz3ugd,   naomigd,  naomigd,  naomi,    naomi,   ROT0,   "Capcom",                 "Street Fighter Zero 3 Upper (GDL-0002)", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
+GAME( 2001, sfz3ugd,   naomigd,  naomigd,  naomi,    sfz3ugd, ROT0,   "Capcom",                 "Street Fighter Zero 3 Upper (GDL-0002)", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
 //GDL-0003
 GAME( 2001, cvsgd,     naomigd,  naomigd,  naomi,    naomi,   ROT0,   "Capcom / SNK",           "Capcom Vs. SNK Millenium Fight 2000 Pro (GDL-0004)", GAME_IMPERFECT_GRAPHICS|GAME_IMPERFECT_SOUND|GAME_NOT_WORKING )
 //GDL-0005 Doki Doki Idol Star Seeker
diff --git a/src/mame/includes/naomi.h b/src/mame/includes/naomi.h
index ba47a496db2..5f100ff3237 100644
--- a/src/mame/includes/naomi.h
+++ b/src/mame/includes/naomi.h
@@ -23,6 +23,7 @@ extern DRIVER_INIT( naomi );
 extern DRIVER_INIT( naomi_mp );
 extern DRIVER_INIT( naomi2 );
 
+extern DRIVER_INIT( sfz3ugd );
 extern DRIVER_INIT( ggxxsla );
 extern DRIVER_INIT( ggxxrl );
 extern DRIVER_INIT( ggxx );
diff --git a/src/mame/machine/dc.c b/src/mame/machine/dc.c
index 322b24eb022..5ccc8683d36 100644
--- a/src/mame/machine/dc.c
+++ b/src/mame/machine/dc.c
@@ -688,7 +688,8 @@ WRITE64_HANDLER( dc_sysctrl_w )
 				else //direct texture path
 					dc_sysctrl_regs[SB_C2DSTAT]=address+ddtdata.length;
 
-				timer_set(space->machine, ATTOTIME_IN_USEC(200), NULL, 0, ch2_dma_irq);
+				/* 200 usecs breaks sfz3upper */
+				timer_set(space->machine, ATTOTIME_IN_USEC(50), NULL, 0, ch2_dma_irq);
 				/* simulate YUV FIFO processing here */
 				if((address & 0x1800000) == 0x0800000)
 					timer_set(space->machine, ATTOTIME_IN_USEC(500), NULL, 0, yuv_fifo_irq);
diff --git a/src/mame/machine/naomi.c b/src/mame/machine/naomi.c
index e6d51f73082..41452c50b6b 100644
--- a/src/mame/machine/naomi.c
+++ b/src/mame/machine/naomi.c
@@ -2,21 +2,10 @@
 
 Per-game specific JVS settings / idle loop skips for the MAME Naomi driver.
 
-suchie3: check bp c0a6458 (might be protection related)
-
-tetkiwam: check bp c09613a
-
-vtennis: check wpset dee3ec8,8,w,wpdata==0xa8804000
+suchie3: check bp c0a6458
 
 vtennis2: check bp c020130 / wpset c013ff0,f,w,wpdata==0x3f800000 -> 0xc020434 (test mode)
 
-smarinef: put cabinet in STD mode, bp c027968, wpset c0e66a6,4,w
-
-
-hotd2: bp 0xc0ba235, modify work RAM 0xc9c35e8 to be zero, bpclear
-
-hotd2o: bp 0xc0ba1f6, modify work RAM 0xc9c35a8 to be zero, bpclear
-
 ***************************************************************************/
 
 #include "emu.h"
@@ -235,13 +224,28 @@ static READ64_HANDLER( naomigd_ggxxrl_idle_skip_r )
 	return naomi_ram64[0x18d6c8/8];
 }
 
-
 DRIVER_INIT( ggxxrl )
 {
 	memory_install_read64_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0xc18d6c8, 0xc18d6cf, 0, 0, naomigd_ggxxrl_idle_skip_r);
 	DRIVER_INIT_CALL(naomi);
 }
 
+/* at least speeds up the annoying copyright screens ;-) */
+static READ64_HANDLER( naomigd_sfz3ugd_idle_skip_r )
+{
+	if (cpu_get_pc(space->cpu)==0xc36a2dc)
+		cpu_spinuntil_time(space->cpu, ATTOTIME_IN_USEC(500));
+
+	return naomi_ram64[0x5dc900/8];
+}
+
+DRIVER_INIT( sfz3ugd )
+{
+	memory_install_read64_handler(cputag_get_address_space(machine, "maincpu", ADDRESS_SPACE_PROGRAM), 0xc5dc900, 0xc5dc907, 0, 0, naomigd_sfz3ugd_idle_skip_r);
+	DRIVER_INIT_CALL(naomi);
+}
+
+
 DRIVER_INIT( qmegamis )
 {
 	DRIVER_INIT_CALL(naomi);