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Fixed various SNES SRAM issues [Fabio Priuli, Angelo Salese]

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This commit is contained in:
Angelo Salese 2010-04-12 17:53:17 +00:00
parent ba841c0efe
commit cc52d6e803
2 changed files with 5 additions and 13 deletions
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2
src/mame/includes/snes.h
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@ -23,7 +23,7 @@
#define DOTCLK_NTSC (MCLK_NTSC/4)
#define DOTCLK_PAL (MCLK_PAL/4)
#define SNES_LAYER_DEBUG 0
#define SNES_LAYER_DEBUG 1
/* Debug definitions */
#ifdef MAME_DEBUG

16
src/mame/machine/snes.c
View File

@ -994,9 +994,7 @@ READ8_HANDLER( snes_r_bank2 )
}
else if ((snes_cart.mode == SNES_MODE_21) && (snes_cart.sram > 0))
{
int mask = (snes_cart.sram - 1); /* Limit SRAM size to what's actually present */
offset -= 0x6000;
value = snes_ram[0x306000 + (offset & mask)];
value = snes_ram[0x300000 + offset];
}
else
{
@ -1157,9 +1155,7 @@ READ8_HANDLER( snes_r_bank6 )
value = memory_read_byte(space, offset);
else if ((offset >= 0x300000) && (snes_cart.sram > 0))
{
int mask = (snes_cart.sram - 1); /* Limit SRAM size to what's actually present */
offset -= 0x6000;
value = snes_ram[0x806000 + (offset & mask)]; /* SRAM */
value = snes_ram[0x800000 + offset]; /* SRAM */
}
else /* Area 0x6000-0x8000 with offset < 0x300000 is reserved */
{
@ -1308,9 +1304,7 @@ WRITE8_HANDLER( snes_w_bank2 )
}
else if ((snes_cart.mode == SNES_MODE_21) && (snes_cart.sram > 0))
{
int mask = (snes_cart.sram - 1); /* Limit SRAM size to what's actually present */
offset -= 0x6000;
snes_ram[0x306000 + (offset & mask)] = data;
snes_ram[0x300000 + offset] = data;
}
else
logerror("snes_w_bank2: Attempt to write to reserved address: %X = %02x\n", offset + 0x300000, data);
@ -1405,9 +1399,7 @@ WRITE8_HANDLER( snes_w_bank6 )
memory_write_byte(space, offset, data);
else if ((offset >= 0x300000) && (snes_cart.sram > 0))
{
int mask = (snes_cart.sram - 1); /* Limit SRAM size to what's actually present */
offset -= 0x6000;
snes_ram[0xb06000 + (offset & mask)] = data;
snes_ram[0xb00000 + 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);