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[Core/MD] enable official bank-switching mapper by default (fixes Sonic VR hack)

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This commit is contained in:
EkeEke 2016-04-30 20:09:03 +02:00
parent 6c9b42f768
commit c6b62fcec7
5 changed files with 13 additions and 7 deletions
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builds/genesis_plus_gx_libretro.dll
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builds/genplus_cube.dol
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18
core/cart_hw/md_cart.c
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@ -2,7 +2,7 @@
* Genesis Plus
* Mega Drive cartridge hardware support
*
* Copyright (C) 2007-2015 Eke-Eke (Genesis Plus GX)
* Copyright (C) 2007-2016 Eke-Eke (Genesis Plus GX)
*
* Many cartridge protections were initially documented by Haze
* (http://haze.mameworld.info/)
@ -44,7 +44,6 @@
#include "shared.h"
#include "eeprom_i2c.h"
#include "eeprom_spi.h"
#include "gamepad.h"
/* Cart database entry */
typedef struct
@ -674,7 +673,7 @@ void md_cart_init(void)
}
else if (cart.romsize > 0x400000)
{
/* assume linear ROM mapper without bankswitching (max. 10MB) */
/* assume linear ROM mapping by default (max. 10MB) */
for (i=0x40; i<0xA0; i++)
{
m68k.memory_map[i].base = cart.rom + (i<<16);
@ -1614,15 +1613,22 @@ static uint32 mapper_radica_r(uint32 address)
static void default_time_w(uint32 address, uint32 data)
{
/* enable multi-game cartridge mapper by default */
if (address < 0xa13040)
{
/* unlicensed cartridges mapper (default) */
mapper_64k_multi_w(address);
return;
}
/* official cartridges mapper (default) */
mapper_sega_w(data);
/* enable "official" cartridge mapper by default */
if (address > 0xa130f1)
{
mapper_512k_w(address, data);
}
else
{
mapper_sega_w(data);
}
}

2
core/cart_hw/md_cart.h
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@ -2,7 +2,7 @@
* Genesis Plus
* Mega Drive cartridge hardware support
*
* Copyright (C) 2007-2015 Eke-Eke (Genesis Plus GX)
* Copyright (C) 2007-2016 Eke-Eke (Genesis Plus GX)
*
* Most cartridge protections were initially documented by Haze
* (http://haze.mameworld.info/)