INPUT_PORTS_END
/***************************************************************************
Machine Driver
***************************************************************************/
static void simpsons_objdma( running_machine &machine )
{
simpsons_state *state = machine.driver_data<simpsons_state>();
int counter, num_inactive;
UINT16 *src, *dst;
k053247_get_ram(state->m_k053246, &dst);
counter = k053247_get_dy(state->m_k053246);
src = state->m_spriteram;
num_inactive = counter = 256;
do {
if ((*src & 0x8000) && (*src & 0xff))
{
memcpy(dst, src, 0x10);
dst += 8;
num_inactive--;
}
src += 8;
}
while (--counter);
if (num_inactive) do { *dst = 0; dst += 8; } while (--num_inactive);
}
static void xexex_objdma( running_machine &machine, int limiter )
{
xexex_state *state = machine.driver_data<xexex_state>();
int counter, num_inactive;
UINT16 *src, *dst;
counter = state->m_frame;
state->m_frame = machine.primary_screen->frame_number();
if (limiter && counter == state->m_frame)
return; // make sure we only do DMA transfer once per frame
k053247_get_ram(state->m_k053246, &dst);
counter = k053247_get_dy(state->m_k053246);
src = state->m_spriteram;
num_inactive = counter = 256;
do
{
if (*src & 0x8000)
{
dst[0] = src[0x0]; dst[1] = src[0x2];
dst[2] = src[0x4]; dst[3] = src[0x6];
dst[4] = src[0x8]; dst[5] = src[0xa];
dst[6] = src[0xc]; dst[7] = src[0xe];
dst += 8;
num_inactive--;
}
src += 0x40;
}
while (--counter);
if (num_inactive) do { *dst = 0; dst += 8; } while (--num_inactive);
}
static void moo_objdma( running_machine &machine, int type )
{
moo_state *state = machine.driver_data<moo_state>();
int num_inactive;
UINT16 *src, *dst, zmask;
int counter = k053247_get_dy(state->m_k053246);
k053247_get_ram(state->m_k053246, &dst);
src = state->m_spriteram;
num_inactive = counter = 256;
zmask = (type) ? 0x00ff : 0xffff;
do {
if ((*src & 0x8000) && (*src & zmask))
{
memcpy(dst, src, 0x10);
dst += 8;
num_inactive--;
}
src += 0x80;
}
while (--counter);
if (num_inactive) do { *dst = 0; dst += 8; } while (--num_inactive);
}
