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[Core/MS] simplified latest Korean x-in-1 mappers implementation

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This commit is contained in:
ekeeke 2023-04-07 09:06:42 +02:00
parent 4a07f8a9f6
commit 1db51e2c5f
1 changed files with 10 additions and 32 deletions
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42
core/cart_hw/sms_cart.c
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@ -1542,31 +1542,17 @@ static void write_mapper_multi_2x16k_v1(unsigned int address, unsigned char data
/* save mapper configuration to unused register */
slot.fcr[0] = (data >> 5) & 0x03;
switch (slot.fcr[0])
if (slot.fcr[0] & 0x02)
{
case 0x00:
{
data &= 0x1f;
mapper_16k_w(1,0x00);
mapper_16k_w(2,data);
break;
}
case 0x01:
{
data &= 0x1f;
mapper_16k_w(1,0x00);
mapper_16k_w(2,data);
break;
}
default:
{
data &= 0x1e;
mapper_16k_w(1,data);
mapper_16k_w(2,data+1);
break;
}
data &= 0x1e;
mapper_16k_w(1,data);
mapper_16k_w(2,data+1);
}
else
{
data &= 0x1f;
mapper_16k_w(1,0x00);
mapper_16k_w(2,data);
}
}
@ -1598,14 +1584,6 @@ static void write_mapper_multi_2x16k_v2(unsigned int address, unsigned char data
return;
}
case 0x02:
{
data &= 0x3f;
mapper_16k_w(1,0x20);
mapper_16k_w(2,data);
return;
}
default:
{
data &= 0x3f;