void upd1990a_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case TIMER_CLOCK:
advance_seconds();
break;
case TIMER_TP:
m_tp = !m_tp;
m_write_tp(m_tp);
break;
case TIMER_DATA_OUT:
m_data_out = !m_data_out;
m_write_data(get_data_out());
break;
case TIMER_TEST_MODE:
if (m_oe)
{
/* TODO: completely untested */
/* time counter is advanced from "Second" counter input */
int max_shift = is_serial_mode() ? 6 : 5;
m_data_out = (m_time_counter[max_shift - 1] == 0);
m_write_data(get_data_out());
for (int i = 0; i < max_shift; i++)
{
m_time_counter[i]++;
if (m_time_counter[i] != 0)
return;
}
}
else
{
/* each counter is advanced in parallel, overflow carry does not affect next counter */
m_data_out = 0;
int max_shift = is_serial_mode() ? 6 : 5;
for (int i = 0; i < max_shift; i++)
{
m_time_counter[i]++;
m_data_out |= (m_time_counter[i] == 0);
}
m_write_data(get_data_out());
}
break;
}
}
void cdp1852_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
if (!m_read_mode())
{
// input data into register
m_data = m_read_data(0);
// signal processor
set_sr_line(0);
}
else
{
if (m_new_data)
{
m_new_data = 0;
// latch data into register
m_data = m_next_data;
// output data
m_write_data((offs_t)0, m_data);
// signal peripheral device
set_sr_line(1);
m_next_sr = 0;
}
else
{
set_sr_line(m_next_sr);
}
}
}
void cdp1852_device::device_reset()
{
// reset data register
m_data = 0;
if (!m_read_mode())
{
// reset service request flip-flop
set_sr_line(1);
}
else
{
// output data
m_write_data((offs_t)0, m_data);
// reset service request flip-flop
set_sr_line(0);
}
}
inline void econet_device::set_signal(device_t *device, int signal, int state)
{
bool changed = false;
if (device == this)
{
if (m_line[signal] != state)
{
if (LOG) logerror("Econet: '%s' %s %u\n", tag(), SIGNAL_NAME[signal], state);
m_line[signal] = state;
changed = true;
}
}
else
{
daisy_entry *entry = m_device_list.first();
while (entry)
{
if (!strcmp(entry->m_device->tag(), device->tag()))
{
if (entry->m_line[signal] != state)
{
if (LOG) logerror("Econet: '%s' %s %u\n", device->tag(), SIGNAL_NAME[signal], state);
entry->m_line[signal] = state;
changed = true;
}
}
entry = entry->next();
}
}
if (changed)
{
switch (signal)
{
case CLK: m_write_clk(state); break;
case DATA: m_write_data(state); break;
}
daisy_entry *entry = m_device_list.first();
while (entry)
{
switch (signal)
{
case CLK:
entry->m_interface->econet_clk(state);
break;
case DATA:
entry->m_interface->econet_data(state);
break;
}
entry = entry->next();
}
if (LOG) logerror("Econet: CLK %u DATA %u\n", get_signal(CLK), get_signal(DATA));
}
}
void cbm_iec_device::set_signal(device_t *device, int signal, int state)
{
bool changed = false;
if (device == this)
{
if (m_line[signal] != state)
{
if (LOG) logerror("CBM IEC: '%s' %s %u\n", tag(), SIGNAL_NAME[signal], state);
m_line[signal] = state;
changed = true;
}
}
else
{
daisy_entry *entry = m_device_list.first();
while (entry)
{
if (!strcmp(entry->m_device->tag(), device->tag()))
{
if (entry->m_line[signal] != state)
{
if (LOG) logerror("CBM IEC: '%s' %s %u\n", device->tag(), SIGNAL_NAME[signal], state);
entry->m_line[signal] = state;
changed = true;
}
}
entry = entry->next();
}
}
if (changed)
{
switch (signal)
{
case SRQ:
m_write_srq(state);
break;
case ATN:
m_write_atn(state);
break;
case CLK:
m_write_clk(state);
break;
case DATA:
m_write_data(state);
break;
case RESET:
m_write_reset(state);
break;
}
daisy_entry *entry = m_device_list.first();
while (entry)
{
switch (signal)
{
case SRQ:
entry->m_interface->cbm_iec_srq(state);
break;
case ATN:
entry->m_interface->cbm_iec_atn(state);
break;
case CLK:
entry->m_interface->cbm_iec_clk(state);
break;
case DATA:
entry->m_interface->cbm_iec_data(state);
break;
case RESET:
entry->m_interface->cbm_iec_reset(state);
break;
}
entry = entry->next();
}
if (LOG) logerror("CBM IEC: SRQ %u ATN %u CLK %u DATA %u RESET %u\n",
get_signal(SRQ), get_signal(ATN), get_signal(CLK), get_signal(DATA), get_signal(RESET));
}
}
