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(MESS) ibmpcjr: Fixed loading of imagic cartridge dumps. (nw)

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This commit is contained in:
Wilbert Pol 2013-08-08 18:58:49 +00:00
parent e2d32cf032
commit 6cdffb1ce4
1 changed files with 17 additions and 2 deletions
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19
src/mess/machine/pc.c
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@ -1545,7 +1545,7 @@ DEVICE_IMAGE_LOAD_MEMBER( pc_state, pcjr_cartridge )
UINT32 address; UINT32 address;
UINT32 size; UINT32 size;
address = (!strcmp(":cart2", image.device().tag())) ? 0xd0000 : 0xe6000; address = (!strcmp(":cart2", image.device().tag())) ? 0xd0000 : 0xe0000;
if ( image.software_entry() ) if ( image.software_entry() )
{ {
@ -1561,6 +1561,7 @@ DEVICE_IMAGE_LOAD_MEMBER( pc_state, pcjr_cartridge )
unsigned header_size = 0; unsigned header_size = 0;
unsigned image_size = image.length(); unsigned image_size = image.length();
bool imagic_hack = false;
/* Check for supported header sizes */ /* Check for supported header sizes */
switch( image_size & 0x3ff ) switch( image_size & 0x3ff )
@ -1579,10 +1580,11 @@ DEVICE_IMAGE_LOAD_MEMBER( pc_state, pcjr_cartridge )
/* Check for supported image sizes */ /* Check for supported image sizes */
switch( image_size - header_size ) switch( image_size - header_size )
{ {
case 0xa000:
imagic_hack = true;
case 0x2000: case 0x2000:
case 0x4000: case 0x4000:
case 0x8000: case 0x8000:
case 0xa000:
case 0x10000: case 0x10000:
break; break;
default: default:
@ -1603,6 +1605,19 @@ DEVICE_IMAGE_LOAD_MEMBER( pc_state, pcjr_cartridge )
image.seterror(IMAGE_ERROR_UNSUPPORTED, "Unable to read cartridge contents" ); image.seterror(IMAGE_ERROR_UNSUPPORTED, "Unable to read cartridge contents" );
return IMAGE_INIT_FAIL; return IMAGE_INIT_FAIL;
} }
if (imagic_hack)
{
UINT8 *cart_area = memregion("maincpu")->base() + address;
memcpy( cart_area + 0xe000, cart_area + 0x2000, 0x2000 );
memcpy( cart_area + 0xc000, cart_area + 0x2000, 0x2000 );
memcpy( cart_area + 0xa000, cart_area + 0x2000, 0x2000 );
memcpy( cart_area + 0x8000, cart_area + 0x2000, 0x2000 );
memcpy( cart_area + 0x6000, cart_area, 0x2000 );
memcpy( cart_area + 0x4000, cart_area, 0x2000 );
memcpy( cart_area + 0x2000, cart_area, 0x2000 );
}
} }
return IMAGE_INIT_PASS; return IMAGE_INIT_PASS;