static TIMER_CALLBACK( tms34061_interrupt )
{
/* set timer for next frame */
timer_adjust_oneshot(tms34061.timer, video_screen_get_frame_period(tms34061.screen), 0);
/* set the interrupt bit in the status reg */
tms34061.regs[TMS34061_STATUS] |= 1;
/* update the interrupt state */
update_interrupts();
}
static WRITE16_HANDLER( fuuki16_vregs_w )
{
fuuki16_state *state = (fuuki16_state *)space->machine->driver_data;
UINT16 old_data = state->vregs[offset];
UINT16 new_data = COMBINE_DATA(&state->vregs[offset]);
if ((offset == 0x1c/2) && old_data != new_data)
{
const rectangle *visarea = video_screen_get_visible_area(space->machine->primary_screen);
attotime period = video_screen_get_frame_period(space->machine->primary_screen);
timer_adjust_periodic(state->raster_interrupt_timer, video_screen_get_time_until_pos(space->machine->primary_screen, new_data, visarea->max_x + 1), 0, period);
}
}
static WRITE32_HANDLER( fuuki32_vregs_w )
{
if (fuuki32_vregs[offset] != data)
{
COMBINE_DATA(&fuuki32_vregs[offset]);
if (offset == 0x1c/4)
{
const rectangle *visarea = video_screen_get_visible_area(space->machine->primary_screen);
attotime period = video_screen_get_frame_period(space->machine->primary_screen);
timer_adjust_periodic(raster_interrupt_timer, video_screen_get_time_until_pos(space->machine->primary_screen, fuuki32_vregs[0x1c/4]>>16, visarea->max_x + 1), 0, period);
}
}
void senjyo_sh_start(void)
{
int i;
/* z80 ctc init */
ctc_intf.baseclock = cpunum_get_clock(1);
z80ctc_init (0, &ctc_intf);
/* z80 pio init */
z80pio_init (0, &pio_intf);
_single = (INT16 *)auto_malloc(SINGLE_LENGTH*2);
for (i = 0;i < SINGLE_LENGTH;i++) /* freq = ctc2 zco / 8 */
_single[i] = ((i/SINGLE_DIVIDER)&0x01)*127*256;
/* CTC2 single tone generator */
sample_set_volume(0,0);
sample_start_raw(0,_single,SINGLE_LENGTH,single_rate,1);
timer_pulse(video_screen_get_frame_period(Machine->primary_screen), NULL, 0, senjyo_sh_update);
}
static int is_ntsc(running_machine *machine)
{
return ATTOSECONDS_TO_HZ(video_screen_get_frame_period(machine->primary_screen).attoseconds) > 55;
}
static WRITE16_HANDLER( fuuki16_vregs_w )
{
UINT16 old_data = fuuki16_vregs[offset];
UINT16 new_data = COMBINE_DATA(&fuuki16_vregs[offset]);
if ((offset == 0x1c/2) && old_data != new_data)
{
timer_adjust(raster_interrupt_timer, video_screen_get_time_until_pos(0, new_data, Machine->screen[0].visarea.max_x + 1), 0, video_screen_get_frame_period(0));
}
}
static void TMS9928A_start (running_machine *machine, const TMS9928a_interface *intf)
{
assert_always(((intf->vram == 0x1000) || (intf->vram == 0x2000) || (intf->vram == 0x4000)), "4, 8 or 16 kB vram please");
tms.model = intf->model;
tms.top_border = TMS_50HZ ? TOP_BORDER_50HZ : TOP_BORDER_60HZ;
tms.bottom_border = TMS_50HZ ? BOTTOM_BORDER_50HZ : BOTTOM_BORDER_60HZ;
tms.INTCallback = intf->int_callback;
/* determine the visible area */
tms.visarea.min_x = LEFT_BORDER - MIN(intf->borderx, LEFT_BORDER);
tms.visarea.max_x = LEFT_BORDER + 32*8 - 1 + MIN(intf->borderx, RIGHT_BORDER);
tms.visarea.min_y = tms.top_border - MIN(intf->bordery, tms.top_border);
tms.visarea.max_y = tms.top_border + 24*8 - 1 + MIN(intf->bordery, tms.bottom_border);
/* configure the screen if we weren't overridden */
if (video_screen_get_width(machine->primary_screen) == LEFT_BORDER+32*8+RIGHT_BORDER &&
video_screen_get_height(machine->primary_screen) == TOP_BORDER_60HZ+24*8+BOTTOM_BORDER_60HZ)
video_screen_configure(machine->primary_screen, LEFT_BORDER + 32*8 + RIGHT_BORDER, tms.top_border + 24*8 + tms.bottom_border, &tms.visarea, video_screen_get_frame_period(machine->primary_screen).attoseconds);
/* Video RAM */
tms.vramsize = intf->vram;
tms.vMem = auto_alloc_array_clear(machine, UINT8, intf->vram);
/* Sprite back buffer */
tms.dBackMem = auto_alloc_array(machine, UINT8, IMAGE_SIZE);
/* back bitmap */
tms.tmpbmp = auto_bitmap_alloc (machine, 256, 192, video_screen_get_format(machine->primary_screen));
TMS9928A_reset ();
tms.LimitSprites = 1;
state_save_register_item(machine, "tms9928a", NULL, 0, tms.Regs[0]);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.Regs[1]);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.Regs[2]);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.Regs[3]);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.Regs[4]);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.Regs[5]);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.Regs[6]);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.Regs[7]);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.StatusReg);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.ReadAhead);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.FirstByte);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.latch);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.Addr);
state_save_register_item(machine, "tms9928a", NULL, 0, tms.INT);
state_save_register_item_pointer(machine, "tms9928a", NULL, 0, tms.vMem, intf->vram);
}
