diff --git a/src/mame/machine/snes.c b/src/mame/machine/snes.c
index 41d19c17e87..a01793ae9c1 100644
--- a/src/mame/machine/snes.c
+++ b/src/mame/machine/snes.c
@@ -999,8 +999,8 @@ READ8_HANDLER( snes_r_bank2 )
 		}
 		else if ((state->cart[0].mode == SNES_MODE_21) && (state->cart[0].sram > 0))
 		{
-			int mask = (state->cart[0].sram - 1) | 0xff0000;	/* Limit SRAM size to what's actually present */
-			value = snes_ram[0x300000 + (offset & mask)];
+//          int mask = state->cart[0].sram - 1; /* Limit SRAM size to what's actually present */
+			value = snes_ram[0x300000 + offset];
 		}
 		else
 		{
@@ -1123,7 +1123,7 @@ READ8_HANDLER( snes_r_bank5 )
 	{
 		if (state->cart[0].sram > 0)
 		{
-			int mask = (state->cart[0].sram - 1) | 0xff0000;	/* Limit SRAM size to what's actually present */
+			int mask = state->cart[0].sram - 1;	/* Limit SRAM size to what's actually present */
 			value = snes_ram[0x700000 + (offset & mask)];
 		}
 		else
@@ -1162,8 +1162,8 @@ READ8_HANDLER( snes_r_bank6 )
 				value = memory_read_byte(space, offset);
 			else if ((offset >= 0x300000) && (state->cart[0].sram > 0))
 			{
-				int mask = (state->cart[0].sram - 1) | 0xff0000;	/* Limit SRAM size to what's actually present */
-				value = snes_ram[0x800000 + (offset & mask)];
+//              int mask = state->cart[0].sram - 1; /* Limit SRAM size to what's actually present */
+				value = snes_ram[0x800000 + offset];
 			}
 			else						/* Area 0x6000-0x8000 with offset < 0x300000 is reserved */
 			{
@@ -1324,8 +1324,8 @@ WRITE8_HANDLER( snes_w_bank2 )
 		}
 		else if ((state->cart[0].mode == SNES_MODE_21) && (state->cart[0].sram > 0))
 		{
-			int mask = (state->cart[0].sram - 1) | 0xff0000;	/* Limit SRAM size to what's actually present */
-			snes_ram[0x300000 + (offset & mask)] = data;
+//          int mask = state->cart[0].sram - 1; /* Limit SRAM size to what's actually present */
+			snes_ram[0x300000 + offset] = data;
 		}
 		else
 			logerror("snes_w_bank2: Attempt to write to reserved address: %X = %02x\n", offset + 0x300000, data);
@@ -1389,8 +1389,8 @@ WRITE8_HANDLER( snes_w_bank5 )
 	{
 		if (state->cart[0].sram > 0)
 		{
-			int mask = (state->cart[0].sram - 1) | 0xff0000;	/* Limit SRAM size to what's actually present */
-			snes_ram[0x700000 + (offset & mask)] = data;
+			int mask = state->cart[0].sram - 1;	/* Limit SRAM size to what's actually present */
+			snes_ram[0x700000 +  + (offset & mask)] = data;
 		}
 		else
 			logerror("snes_w_bank5: Attempt to write to reserved address: %X = %02x\n", offset + 0x700000, data);
@@ -1423,8 +1423,8 @@ WRITE8_HANDLER( snes_w_bank6 )
 				memory_write_byte(space, offset, data);
 			else if ((offset >= 0x300000) && (state->cart[0].sram > 0))
 			{
-				int mask = (state->cart[0].sram - 1) | 0xff0000;	/* Limit SRAM size to what's actually present */
-				snes_ram[0x800000 + (offset & mask)] = data;
+//              int mask = state->cart[0].sram - 1; /* Limit SRAM size to what's actually present */
+				snes_ram[0x800000 + offset] = data;
 			}
 			else	/* Area in 0x6000-0x8000 && offset < 0x300000 is Reserved! */
 				logerror("snes_w_bank6: Attempt to write to reserved address: %X = %02x\n", offset + 0x800000, data);