static void dave_refresh_selectable_int(device_t *device)
{
dave_t *dave = get_token(device);
/* update 1kHz/50Hz/tg latch and int input */
switch ((dave->Regs[7]>>5) & 0x03)
{
/* 1kHz */
case 0:
{
dave->int_latch &=~(1<<1);
dave->int_latch |= (dave->int_irq>>1) & 0x02;
/* set int input state */
dave->int_input &= ~(1<<0);
dave->int_input |= (dave->one_khz_state & 0x01)<<0;
}
break;
/* 50Hz */
case 1:
{
dave->int_latch &=~(1<<1);
dave->int_latch |= dave->int_irq & 0x02;
/* set int input state */
dave->int_input &= ~(1<<0);
dave->int_input |= (dave->fifty_hz_state & 0x01)<<0;
}
break;
default:
break;
}
dave_refresh_ints(device);
}
static void dave_refresh_selectable_int(void)
{
/* update 1khz/50hz/tg latch and int input */
switch ((dave.Regs[7]>>5) & 0x03)
{
/* 1khz */
case 0:
{
dave.int_latch &=~(1<<1);
dave.int_latch |= (dave.int_irq>>1) & 0x02;
/* set int input state */
dave.int_input &= ~(1<<0);
dave.int_input |= (dave.one_khz_state & 0x01)<<0;
}
break;
/* 50hz */
case 1:
{
dave.int_latch &=~(1<<1);
dave.int_latch |= dave.int_irq & 0x02;
/* set int input state */
dave.int_input &= ~(1<<0);
dave.int_input |= (dave.fifty_hz_state & 0x01)<<0;
}
break;
default:
break;
}
dave_refresh_ints();
}
static void dave_set_external_int_state(device_t *device, int IntID, int State)
{
dave_t *dave = get_token(device);
switch (IntID)
{
/* connected to Nick virq */
case DAVE_INT1_ID:
{
int previous_state;
previous_state = dave->int_input;
dave->int_input &=~(1<<4);
if (State)
{
dave->int_input |=(1<<4);
}
if ((previous_state ^ dave->int_input) & (1<<4))
{
/* changed state */
if (dave->int_input & (1<<4))
{
/* int request */
dave->int_latch |= (1<<5);
dave_refresh_ints(device);
}
}
}
break;
case DAVE_INT2_ID:
{
int previous_state;
previous_state = dave->int_input;
dave->int_input &= ~(1<<6);
if (State)
{
dave->int_input |=(1<<6);
}
if ((previous_state ^ dave->int_input) & (1<<6))
{
/* changed state */
if (dave->int_input & (1<<6))
{
/* int request */
dave->int_latch|=(1<<7);
dave_refresh_ints(device);
}
}
}
break;
default:
break;
}
}
/* negative edge triggered */
void Dave_SetExternalIntState(int IntID, int State)
{
switch (IntID)
{
/* connected to Nick virq */
case DAVE_INT1_ID:
{
int previous_state;
previous_state = dave.int_input;
dave.int_input &=~(1<<4);
if (State)
{
dave.int_input |=(1<<4);
}
if ((previous_state ^ dave.int_input) & (1<<4))
{
/* changed state */
if (dave.int_input & (1<<4))
{
/* int request */
dave.int_latch |= (1<<5);
dave_refresh_ints();
}
}
}
break;
case DAVE_INT2_ID:
{
int previous_state;
previous_state = dave.int_input;
dave.int_input &= ~(1<<6);
if (State)
{
dave.int_input |=(1<<6);
}
if ((previous_state ^ dave.int_input) & (1<<6))
{
/* changed state */
if (dave.int_input & (1<<6))
{
/* int request */
dave.int_latch|=(1<<7);
dave_refresh_ints();
}
}
}
break;
default:
break;
}
}
