int eprom_vh_start(void)
{
static struct atarigen_mo_desc mo_desc =
{
1024, /* maximum number of MO's */
8, /* number of bytes per MO entry */
2, /* number of bytes between MO words */
0, /* ignore an entry if this word == 0xffff */
0, 0, 0x3ff, /* link = (data[linkword] >> linkshift) & linkmask */
1 /* reverse order */
};
static struct atarigen_pf_desc pf_desc =
{
8, 8, /* width/height of each tile */
64, 64 /* number of tiles in each direction */
};
/* reset statics */
memset(&pf_state, 0, sizeof(pf_state));
/* initialize the playfield */
if (atarigen_pf_init(&pf_desc))
return 1;
/* initialize the motion objects */
if (atarigen_mo_init(&mo_desc))
{
atarigen_pf_free();
return 1;
}
return 0;
}
int xybots_vh_start(void)
{
static struct atarigen_mo_desc mo_desc =
{
64, /* maximum number of MO's */
8, /* number of bytes per MO entry */
2, /* number of bytes between MO words */
0, /* ignore an entry if this word == 0xffff */
-1, 0, 0x3f, /* link = (data[linkword] >> linkshift) & linkmask */
0 /* render in reverse link order */
};
static struct atarigen_pf_desc pf_desc =
{
8, 8, /* width/height of each tile */
64, 64, /* number of tiles in each direction */
1 /* non-scrolling */
};
/* initialize the playfield */
if (atarigen_pf_init(&pf_desc))
return 1;
/* initialize the motion objects */
if (atarigen_mo_init(&mo_desc))
{
atarigen_pf_free();
return 1;
}
return 0;
}
int badlands_vh_start(void)
{
static struct atarigen_mo_desc mo_desc =
{
32, /* maximum number of MO's */
4, /* number of bytes per MO entry */
0x80, /* number of bytes between MO words */
0, /* ignore an entry if this word == 0xffff */
-1, 0, 0x3f, /* link = (data[linkword] >> linkshift) & linkmask */
0 /* render in reverse link order */
};
static struct atarigen_pf_desc pf_desc =
{
8, 8, /* width/height of each tile */
64, 64 /* number of tiles in each direction */
};
/* initialize statics */
memset(&pf_state, 0, sizeof(pf_state));
/* initialize the playfield */
if (atarigen_pf_init(&pf_desc))
return 1;
/* initialize the motion objects */
if (atarigen_mo_init(&mo_desc))
{
atarigen_pf_free();
return 1;
}
/*
* if we are palette reducing, do the simple thing by marking everything used except for
* the transparent sprite and alpha colors; this should give some leeway for machines
* that can't give up all 256 colors
*/
if (palette_used_colors)
{
int i;
memset(palette_used_colors, PALETTE_COLOR_USED, Machine->drv->total_colors * sizeof(UINT8));
for (i = 0; i < 8; i++)
palette_used_colors[0x80 + i * 16] = PALETTE_COLOR_TRANSPARENT;
}
return 0;
}
int skullxbo_vh_start(void)
{
static struct atarigen_mo_desc mo_desc =
{
256, /* maximum number of MO's */
8, /* number of bytes per MO entry */
2, /* number of bytes between MO words */
0, /* ignore an entry if this word == 0xffff */
0, 0, 0xff, /* link = (data[linkword] >> linkshift) & linkmask */
0 /* reverse order */
};
static struct atarigen_pf_desc pf_desc =
{
16, 8, /* width/height of each tile */
64, 64 /* number of tiles in each direction */
};
/* reset statics */
memset(&pf_state, 0, sizeof(pf_state));
latch_byte = 0;
mo_bank = 0;
/* allocate the scroll list */
scroll_list = malloc(sizeof(UINT16) * 2 * YDIM);
if (!scroll_list)
return 1;
/* initialize the playfield */
if (atarigen_pf_init(&pf_desc))
{
free(scroll_list);
return 1;
}
/* initialize the motion objects */
if (atarigen_mo_init(&mo_desc))
{
free(scroll_list);
atarigen_pf_free();
return 1;
}
return 0;
}
int arcadecl_vh_start(void)
{
static struct atarigen_mo_desc mo_desc =
{
256, /* maximum number of MO's */
8, /* number of bytes per MO entry */
2, /* number of bytes between MO words */
0, /* ignore an entry if this word == 0xffff */
0, 0, 0xff, /* link = (data[linkword] >> linkshift) & linkmask */
0 /* render in reverse link order */
};
static struct atarigen_pf_desc pf_desc =
{
8, 8, /* width/height of each tile */
64, 64, /* number of tiles in each direction */
1 /* non-scrolling */
};
/* allocate color usage */
color_usage = (int*)malloc(sizeof(int) * 256);
if (!color_usage)
return 1;
color_usage[0] = XDIM * YDIM;
memset(atarigen_playfieldram, 0, 0x20000);
/* initialize the playfield */
if (atarigen_pf_init(&pf_desc))
{
free(color_usage);
return 1;
}
/* initialize the motion objects */
if (atarigen_mo_init(&mo_desc))
{
atarigen_pf_free();
free(color_usage);
return 1;
}
return 0;
}