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(MESS) vcs_slot: avoid possible crashes when loading a new game from the internal UI. nw.

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This commit is contained in:
Fabio Priuli 2014-08-27 07:07:58 +00:00
parent c7d242438e
commit e286151f74
1 changed files with 120 additions and 115 deletions
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235
src/emu/bus/vcs/vcs_slot.c
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@ -178,127 +178,132 @@ static const char *vcs_get_slot(int type)
bool vcs_cart_slot_device::call_load()
{
UINT8 *ROM;
UINT32 len;
if (software_entry() != NULL)
len = get_software_region_length("rom");
else
len = length();
//printf("Size: 0x%X\n", len);
// check that filesize is among the supported ones
switch (len)
if (m_cart)
{
case 0x00800:
case 0x01000:
case 0x02000:
case 0x028ff:
case 0x02900:
case 0x03000:
case 0x04000:
case 0x08000:
case 0x10000:
case 0x80000:
break;
default:
seterror(IMAGE_ERROR_UNSUPPORTED, "Invalid rom file size" );
return IMAGE_INIT_FAIL;
}
m_cart->rom_alloc(len);
ROM = m_cart->get_rom_base();
if (software_entry() != NULL)
{
const char *pcb_name;
memcpy(ROM, get_software_region("rom"), len);
if ((pcb_name = get_feature("slot")) != NULL)
m_type = vcs_get_pcb_id(pcb_name);
UINT8 *ROM;
UINT32 len;
if (software_entry() != NULL)
len = get_software_region_length("rom");
else
len = length();
//printf("Size: 0x%X\n", len);
// check that filesize is among the supported ones
switch (len)
{
case 0x00800:
case 0x01000:
case 0x02000:
case 0x028ff:
case 0x02900:
case 0x03000:
case 0x04000:
case 0x08000:
case 0x10000:
case 0x80000:
break;
default:
seterror(IMAGE_ERROR_UNSUPPORTED, "Invalid rom file size" );
return IMAGE_INIT_FAIL;
}
m_cart->rom_alloc(len);
ROM = m_cart->get_rom_base();
if (software_entry() != NULL)
{
const char *pcb_name;
memcpy(ROM, get_software_region("rom"), len);
if ((pcb_name = get_feature("slot")) != NULL)
m_type = vcs_get_pcb_id(pcb_name);
else
{
// identify type based on size
switch (len)
{
case 0x800:
m_type = A26_2K;
break;
case 0x1000:
m_type = A26_4K;
break;
case 0x2000:
m_type = A26_F8;
break;
case 0x28ff:
case 0x2900:
m_type = A26_DPC;
break;
case 0x3000:
m_type = A26_FA;
break;
case 0x4000:
m_type = A26_F6;
break;
case 0x8000:
m_type = A26_F4;
break;
case 0x10000:
m_type = A26_32IN1;
break;
case 0x80000:
m_type = A26_3F;
break;
default:
m_type = A26_4K;
printf("Unrecognized cart type!\n");
break;
}
}
}
else
{
// identify type based on size
switch (len)
fread(ROM, len);
m_type = identify_cart_type(ROM, len);
}
//printf("Type: %s\n", vcs_get_slot(m_type));
// check for Special Chip (128bytes of RAM)
if (len == 0x2000 || len == 0x4000 || len == 0x8000)
if (detect_super_chip(ROM, len))
{
case 0x800:
m_type = A26_2K;
break;
case 0x1000:
m_type = A26_4K;
break;
case 0x2000:
m_type = A26_F8;
break;
case 0x28ff:
case 0x2900:
m_type = A26_DPC;
break;
case 0x3000:
m_type = A26_FA;
break;
case 0x4000:
m_type = A26_F6;
break;
case 0x8000:
m_type = A26_F4;
break;
case 0x10000:
m_type = A26_32IN1;
break;
case 0x80000:
m_type = A26_3F;
break;
default:
m_type = A26_4K;
printf("Unrecognized cart type!\n");
break;
m_cart->ram_alloc(0x80);
//printf("Super Chip detected!\n");
}
}
// Super chip games:
// dig dig, crystal castles, millipede, stargate, defender ii, jr. Pac Man,
// desert falcon, dark chambers, super football, sprintmaster, fatal run,
// off the wall, shooting arcade, secret quest, radar lock, save mary, klax
// add CBS RAM+ (128bytes of RAM)
if (m_type == A26_FA)
m_cart->ram_alloc(0x100);
// add M Network RAM
else if (m_type == A26_E7)
m_cart->ram_alloc(0x800);
// add Commavid RAM
else if (m_type == A26_CV)
m_cart->ram_alloc(0x400);
// add Starpath Superchager RAM
else if (m_type == A26_SS)
m_cart->ram_alloc(0x1800);
// add Boulder Dash RAM
else if (m_type == A26_3E)
m_cart->ram_alloc(0x8000);
// pass a pointer to the now allocated ROM for the DPC chip
if (m_type == A26_DPC)
m_cart->setup_addon_ptr((UINT8 *)m_cart->get_rom_base() + 0x2000);
return IMAGE_INIT_PASS;
}
else
{
fread(ROM, len);
m_type = identify_cart_type(ROM, len);
}
//printf("Type: %s\n", vcs_get_slot(m_type));
// check for Special Chip (128bytes of RAM)
if (len == 0x2000 || len == 0x4000 || len == 0x8000)
if (detect_super_chip(ROM, len))
{
m_cart->ram_alloc(0x80);
//printf("Super Chip detected!\n");
}
// Super chip games:
// dig dig, crystal castles, millipede, stargate, defender ii, jr. Pac Man,
// desert falcon, dark chambers, super football, sprintmaster, fatal run,
// off the wall, shooting arcade, secret quest, radar lock, save mary, klax
// add CBS RAM+ (128bytes of RAM)
if (m_type == A26_FA)
m_cart->ram_alloc(0x100);
// add M Network RAM
else if (m_type == A26_E7)
m_cart->ram_alloc(0x800);
// add Commavid RAM
else if (m_type == A26_CV)
m_cart->ram_alloc(0x400);
// add Starpath Superchager RAM
else if (m_type == A26_SS)
m_cart->ram_alloc(0x1800);
// add Boulder Dash RAM
else if (m_type == A26_3E)
m_cart->ram_alloc(0x8000);
// pass a pointer to the now allocated ROM for the DPC chip
if (m_type == A26_DPC)
m_cart->setup_addon_ptr((UINT8 *)m_cart->get_rom_base() + 0x2000);
return IMAGE_INIT_PASS;
}