diff --git a/src/mame/drivers/pgm2.cpp b/src/mame/drivers/pgm2.cpp
index 311f3dc9897..c34c364dfaf 100644
--- a/src/mame/drivers/pgm2.cpp
+++ b/src/mame/drivers/pgm2.cpp
@@ -320,6 +320,33 @@ WRITE32_MEMBER(pgm2_state::mcu_w)
 		mcu_command(space, false);
 }
 
+WRITE16_MEMBER(pgm2_state::unk30120014_w)
+{
+	if (offset == 0)
+	{
+		// 0/1 toggles (maybe sprite dma triggers?)
+	}
+	else
+	{
+		// interesting data
+		//printf("unk30120014_w %d %04x\n", offset, data);
+	}
+}
+
+WRITE16_MEMBER(pgm2_state::unk30120018_w)
+{
+	if (offset == 0)
+	{
+		// writes 1 (maybe sprite enable)
+	}
+	else
+	{
+		// writes 0 (rarely)
+		//printf("unk30120018_w %d %04x\n", offset, data);
+	}
+}
+
+
 static ADDRESS_MAP_START( pgm2_map, AS_PROGRAM, 32, pgm2_state )
 	AM_RANGE(0x00000000, 0x00003fff) AM_ROM //AM_REGION("user1", 0x00000) // internal ROM
 
@@ -357,6 +384,8 @@ static ADDRESS_MAP_START( pgm2_map, AS_PROGRAM, 32, pgm2_state )
 	AM_RANGE(0x30120000, 0x30120003) AM_RAM AM_SHARE("bgscroll") // scroll
 	AM_RANGE(0x30120008, 0x3012000b) AM_RAM AM_SHARE("fgscroll")
 	AM_RANGE(0x3012000c, 0x3012000f) AM_RAM AM_SHARE("vidmode")
+	AM_RANGE(0x30120014, 0x30120017) AM_WRITE16(unk30120014_w, 0xffffffff)
+	AM_RANGE(0x30120018, 0x3012001b) AM_WRITE16(unk30120018_w, 0xffffffff)
 	AM_RANGE(0x30120030, 0x30120033) AM_WRITE16(share_bank_w, 0xffff0000)
 	AM_RANGE(0x30120038, 0x3012003b) AM_WRITE(sprite_encryption_w)
 	// there are other 0x301200xx regs
@@ -576,8 +605,7 @@ MACHINE_CONFIG_END
 // not strictly needed as the video code supports changing on the fly, but makes recording easier etc.
 static MACHINE_CONFIG_DERIVED( pgm2_lores, pgm2 )
 	MCFG_SCREEN_MODIFY("screen")
-	// note, +8 to y position too, could be a sprite reg to move sprites intead
-	MCFG_SCREEN_VISIBLE_AREA(0, 320-1, 0+8, 224+8-1)
+	MCFG_SCREEN_VISIBLE_AREA(0, 320-1, 0, 240-1)
 MACHINE_CONFIG_END
 
 
@@ -869,7 +897,11 @@ all others:         SPANSION S99-50070
 	\
 	ROM_REGION( 0x08000000, "ymz774", ROMREGION_ERASEFF ) /* ymz770 */ \
 	ROM_LOAD16_WORD_SWAP( "ig-d3_wave0.u12",        0x00000000, 0x4000000, CRC(edf2332d) SHA1(7e01c7e03e515814d7de117c265c3668d32842fa) ) \
-	ROM_LOAD16_WORD_SWAP( "ig-d3_wave1.u11",        0x04000000, 0x4000000, CRC(62321b20) SHA1(a388c8a2489430fbe92fb26b3ef81c66ce97f318) )
+	ROM_LOAD16_WORD_SWAP( "ig-d3_wave1.u11",        0x04000000, 0x4000000, CRC(62321b20) SHA1(a388c8a2489430fbe92fb26b3ef81c66ce97f318) ) \
+	\
+	ROM_REGION( 0x10000, "sram", 0 ) \
+	ROM_LOAD( "kof98umh_sram",            0x00000000, 0x10000, CRC(60460ed9) SHA1(55cd8de37cee04ff7ad940fb52f8fb8db042c26e) )
+
 
 ROM_START( kof98umh )
 	ROM_REGION( 0x04000, "maincpu", 0 )
@@ -1126,7 +1158,7 @@ GAME( 2011, kov3_102,     kov3, pgm2,    pgm2, pgm2_state,     kov3_102,   ROT0,
 GAME( 2011, kov3_100,     kov3, pgm2,    pgm2, pgm2_state,     kov3_100,   ROT0, "IGS", "Knights of Valour 3 (V100, China)", MACHINE_NOT_WORKING )
 
 // King of Fighters '98: Ultimate Match Hero
-GAME( 2009, kof98umh,     0,    pgm2_lores, pgm2, pgm2_state,  kof98umh,   ROT0, "IGS / SNK Playmore / NewChannel", "The King of Fighters '98: Ultimate Match HERO (China, V100, 09-08-23)", MACHINE_NOT_WORKING )
+GAME( 2009, kof98umh,     0,    pgm2_lores, pgm2, pgm2_state,  kof98umh,   ROT0, "IGS / SNK Playmore / New Channel", "The King of Fighters '98: Ultimate Match HERO (China, V100, 09-08-23)", MACHINE_IMPERFECT_SOUND )
 
 // Jigsaw World Arena
 
diff --git a/src/mame/includes/pgm2.h b/src/mame/includes/pgm2.h
index d3052a22b3f..a93fa8ccab7 100644
--- a/src/mame/includes/pgm2.h
+++ b/src/mame/includes/pgm2.h
@@ -55,7 +55,9 @@ public:
 	DECLARE_WRITE16_MEMBER(share_bank_w);
 	DECLARE_READ8_MEMBER(shareram_r);
 	DECLARE_WRITE8_MEMBER(shareram_w);
-
+	DECLARE_WRITE16_MEMBER(unk30120014_w);
+	DECLARE_WRITE16_MEMBER(unk30120018_w);
+	
 	DECLARE_READ32_MEMBER(orleg2_speedup_r);
 	DECLARE_READ32_MEMBER(kov2nl_speedup_r);
 	DECLARE_READ32_MEMBER(kof98umh_speedup_r);
diff --git a/src/mame/video/pgm2.cpp b/src/mame/video/pgm2.cpp
index 8f416b469c8..a1e3ec0a8cc 100644
--- a/src/mame/video/pgm2.cpp
+++ b/src/mame/video/pgm2.cpp
@@ -266,8 +266,8 @@ uint32_t pgm2_state::screen_update_pgm2(screen_device &screen, bitmap_rgb32 &bit
 
 	if (mode)
 		m_screen->set_visible_area(0, 448 - 1, 0, 224 - 1);
-	else // note, +8 to y position too, could be a sprite reg to move sprites intead
-		m_screen->set_visible_area(0, 320 - 1, 8, 224 + 8 - 1);
+	else
+		m_screen->set_visible_area(0, 320 - 1, 0, 240 - 1);
 	
 
 	m_fg_tilemap->set_scrollx(0, m_fgscroll[0] & 0xffff);