diff --git a/src/mame/machine/playch10.c b/src/mame/machine/playch10.c
index d661d43b64c..4a072085df1 100644
--- a/src/mame/machine/playch10.c
+++ b/src/mame/machine/playch10.c
@@ -555,12 +555,20 @@ static WRITE8_HANDLER( mmc1_rom_switch_w )
 			break;
 
 			case 1:	/* video rom banking - bank 0 - 4k or 8k */
-				pc10_set_videorom_bank(space->machine, 0, (vrom4k) ? 4 : 8, (mmc1_shiftreg & 0x1f), 4);
+				if (vram) 
+					set_videoram_bank(space->machine, 0, (vrom4k) ? 4 : 8, (mmc1_shiftreg & 0x1f), 4);
+				else 
+					pc10_set_videorom_bank(space->machine, 0, (vrom4k) ? 4 : 8, (mmc1_shiftreg & 0x1f), 4);
 			break;
 
 			case 2: /* video rom banking - bank 1 - 4k only */
-				if (vrom4k)
-					pc10_set_videorom_bank(space->machine, 4, 4, (mmc1_shiftreg & 0x1f), 4);
+				if (vrom4k) 
+				{
+					if (vram) 
+						set_videoram_bank(space->machine, 0, (vrom4k) ? 4 : 8, (mmc1_shiftreg & 0x1f), 4);
+					else 
+						pc10_set_videorom_bank(space->machine, 4, 4, (mmc1_shiftreg & 0x1f), 4);
+				}
 			break;
 
 			case 3:	/* program banking */
diff --git a/src/mame/machine/vsnes.c b/src/mame/machine/vsnes.c
index 7ff46173833..0b7ef668e8b 100644
--- a/src/mame/machine/vsnes.c
+++ b/src/mame/machine/vsnes.c
@@ -783,11 +783,12 @@ static WRITE8_HANDLER( drmario_rom_banking )
 			break;
 
 			case 1:	/* video rom banking - bank 0 - 4k or 8k */
-				v_set_videorom_bank(space->machine, 0, (vrom4k) ? 4 : 8, drmario_shiftreg, (vrom4k) ? 4 : 8);
+				if (!vram) 
+					v_set_videorom_bank(space->machine, 0, (vrom4k) ? 4 : 8, drmario_shiftreg, (vrom4k) ? 4 : 8);
 			break;
 
 			case 2: /* video rom banking - bank 1 - 4k only */
-				if (vrom4k)
+				if (vrom4k && !vram)
 					v_set_videorom_bank(space->machine, 4, 4, drmario_shiftreg, 4);
 			break;