void pioneer_ldv1000_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case TID_MULTIJUMP:
{
// bit 5 of port B on PPI 1 selects the direction of slider movement
int direction = (m_portb1 & 0x20) ? 1 : -1;
advance_slider(direction);
// update down counter and reschedule
if (--m_counter != 0)
timer.adjust(MULTIJUMP_TRACK_TIME);
break;
}
case TID_VSYNC_OFF:
m_vsync = false;
break;
case TID_VBI_DATA_FETCH:
{
// appears to return data in reverse order
UINT32 lines[3];
lines[0] = get_field_code(LASERDISC_CODE_LINE1718, false);
lines[1] = get_field_code(LASERDISC_CODE_LINE17, false);
lines[2] = get_field_code(LASERDISC_CODE_LINE16, false);
// fill in the details
memset(m_vbi, 0, sizeof(m_vbi));
if (focus_on() && laser_on())
{
// loop over lines
for (int line = 0; line < 3; line++)
{
UINT8 *dest = &m_vbi[line * 7];
UINT32 data = lines[line];
// the logic only processes leadin/leadout/frame number codes
if (data == VBI_CODE_LEADIN || data == VBI_CODE_LEADOUT || (data & VBI_MASK_CAV_PICTURE) == VBI_CODE_CAV_PICTURE)
{
*dest++ = 0x09 | (((data & VBI_MASK_CAV_PICTURE) == VBI_CODE_CAV_PICTURE) ? 0x02 : 0x00);
*dest++ = 0x08;
*dest++ = (data >> 16) & 0x0f;
*dest++ = (data >> 12) & 0x0f;
*dest++ = (data >> 8) & 0x0f;
*dest++ = (data >> 4) & 0x0f;
*dest++ = (data >> 0) & 0x0f;
}
}
}
// signal that data is ready and reset the readback index
m_vbiready = true;
m_vbiindex = 0;
break;
}
// pass everything else onto the parent
default:
laserdisc_device::device_timer(timer, id, param, ptr);
break;
}
void phillips_22vp931_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case TID_VBI_DATA_FETCH:
{
uint32_t line = param >> 2;
int which = param & 3;
uint32_t code = 0;
// fetch the code and compute the DATIC latched value
if (line >= LASERDISC_CODE_LINE16 && line <= LASERDISC_CODE_LINE18)
code = get_field_code(laserdisc_field_code(line), false);
// at the start of each line, signal an interrupt and use a timer to turn it off
if (which == 0)
{
m_i8049_cpu->set_input_line(MCS48_INPUT_IRQ, ASSERT_LINE);
timer_set(attotime::from_nsec(5580), TID_IRQ_OFF);
}
// clock the data strobe on each subsequent callback
else if (code != 0)
{
m_daticval = code >> (8 * (3 - which));
m_datastrobe = 1;
timer_set(attotime::from_nsec(5000), TID_DATA_STROBE_OFF);
}
// determine the next bit to fetch and reprime ourself
if (++which == 4)
{
which = 0;
line++;
}
if (line <= LASERDISC_CODE_LINE18 + 1)
timer_set(screen().time_until_pos(line*2, which * 2 * screen().width() / 4), TID_VBI_DATA_FETCH, (line << 2) + which);
break;
}
case TID_DEFERRED_DATA:
// set the value and mark it pending
if (LOG_COMMANDS && m_fromcontroller_pending)
printf("Dropped previous command byte\n");
m_fromcontroller = param;
m_fromcontroller_pending = true;
// track the commands for debugging purposes
if (m_cmdcount < ARRAY_LENGTH(m_cmdbuf))
{
m_cmdbuf[m_cmdcount++ % 3] = param;
if (LOG_COMMANDS && m_cmdcount % 3 == 0)
printf("Cmd: %02X %02X %02X\n", m_cmdbuf[0], m_cmdbuf[1], m_cmdbuf[2]);
}
break;
case TID_IRQ_OFF:
m_i8049_cpu->set_input_line(MCS48_INPUT_IRQ, CLEAR_LINE);
break;
case TID_DATA_STROBE_OFF:
m_datastrobe = 0;
break;
case TID_ERP_OFF:
m_daticerp = 0;
break;
case TID_HALF_TRACK:
// advance by the count and toggle the state
m_trackstate ^= 1;
if ((m_trackdir < 0 && !m_trackstate) || (m_trackdir > 0 && m_trackstate))
{
advance_slider(m_trackdir);
m_advanced += m_trackdir;
}
break;
// pass everything else onto the parent
default:
laserdisc_device::device_timer(timer, id, param, ptr);
break;
}
