void mos6530_base_t::timer_w(offs_t offset, UINT8 data, bool ie)
{
live_sync();
m_timer = data;
switch (offset & 0x03) {
case 0: m_prescale = 1; break;
case 1: m_prescale = 8; break;
case 2: m_prescale = 64; break;
case 3: m_prescale = 1024; break;
}
m_ie_timer = ie;
if (cur_live.tm_irq != machine().time()) {
m_irq_timer = false;
}
update_irq();
if (LOG_TIMER) logerror("%s %s %s '%s' Timer value %02x prescale %u IE %u\n", machine().time().as_string(), machine().describe_context(), name(), tag(), data, m_prescale, m_ie_timer ? 1 : 0);
checkpoint();
if (cur_live.state != IDLE) {
live_abort();
}
live_start();
live_run();
}
void mos6530_base_t::device_reset()
{
m_pa_out = 0;
m_pa_ddr = 0;
m_pb_out = 0;
m_pb_ddr = 0;
m_ie_timer = false;
m_irq_timer = false;
m_ie_edge = false;
m_irq_edge = false;
m_pa7_dir = 0;
update_pa();
update_pb();
update_irq();
edge_detect();
m_timer = 0xff;
m_prescale = 1024;
if (cur_live.state != IDLE) {
live_abort();
}
live_start();
live_run();
}
void amiga_fdc::dmacon_set(uint16_t data)
{
live_sync();
dmacon = data;
dma_check();
live_run();
}
void victor_9000_fdc_t::live_start()
{
cur_live.tm = machine().time();
cur_live.state = RUNNING;
cur_live.next_state = -1;
cur_live.shift_reg = 0;
cur_live.shift_reg_write = 0;
cur_live.bit_counter = 0;
cur_live.sync_bit_counter = 0;
cur_live.sync_byte_counter = 0;
cur_live.drive = m_drive;
cur_live.side = m_side;
cur_live.drw = m_drw;
cur_live.wd = m_wd;
cur_live.wrsync = m_wrsync;
cur_live.erase = m_erase;
pll_reset(cur_live.tm, attotime::from_nsec(2130));
checkpoint_live = cur_live;
pll_save_checkpoint();
live_run();
}
void amiga_fdc::dmacon_set(UINT16 data)
{
live_sync();
dmacon = data;
dma_check();
live_run();
}
void mos6530_base_t::device_reset()
{
m_pa_out = 0xff;
m_pa_ddr = 0;
m_pb_out = 0xff; // a7800 One-On-One Basketball (1on1u) needs this or you can't start a game, it doesn't initialize it. (see MT6060)
m_pb_ddr = 0;
m_ie_timer = false;
m_irq_timer = false;
m_ie_edge = false;
m_irq_edge = false;
m_pa7_dir = 0;
update_pa();
update_pb();
update_irq();
edge_detect();
m_timer = 0xff;
m_prescale = 1024;
if (cur_live.state != IDLE) {
live_abort();
}
live_start();
live_run();
}
void c2040_fdc_t::stp0_w(int stp)
{
if (m_stp0 != stp)
{
live_sync();
this->stp_w(m_floppy0, m_mtr0, m_stp0, stp);
checkpoint();
live_run();
}
}
void c8050_fdc_device::stp1_w(int stp)
{
if (m_stp1 != stp)
{
live_sync();
if (m_floppy1) stp_w(m_floppy1, m_mtr1, m_stp1, stp);
checkpoint();
live_run();
}
}
void c8050_fdc_device::stp0_w(int stp)
{
if (m_stp0 != stp)
{
live_sync();
stp_w(m_floppy0, m_mtr0, m_stp0, stp);
checkpoint();
live_run();
}
}
void amiga_fdc::dmacon_set(UINT16 data)
{
live_sync();
dmacon = data;
dma_check();
dskbyt = dskbyt & 0xbfff;
if(dma_state != DMA_IDLE)
dskbyt |= 0x4000;
live_run();
}
void c2040_fdc_t::stp1_w(int stp)
{
if (m_stp1 != stp)
{
live_sync();
if (m_floppy1) this->stp_w(m_floppy1, m_mtr1, m_stp1, stp);
checkpoint();
live_run();
}
}
void amiga_fdc::dsklen_w(UINT16 data)
{
live_sync();
if(!(data & 0x8000) || (data == pre_dsklen)) {
dsklen = pre_dsklen = data;
dma_check();
} else
pre_dsklen = data;
live_run();
}
void c2040_fdc_t::ds_w(int ds)
{
if (m_ds != ds)
{
live_sync();
m_ds = cur_live.ds = ds;
if (LOG) logerror("%s %s DS %u\n", machine().time().as_string(), machine().describe_context(), ds);
checkpoint();
live_run();
}
}
void c64h156_device::ds_w(int ds)
{
if (m_ds != ds)
{
live_sync();
m_ds = cur_live.ds = ds;
checkpoint();
if (LOG) logerror("%s DS %u\n", machine().time().as_string(), ds);
live_run();
}
}
void amiga_fdc::live_abort()
{
if(!cur_live.tm.is_never() && cur_live.tm > machine().time()) {
rollback();
live_run(machine().time());
}
cur_live.pll.stop_writing(floppy, cur_live.tm);
cur_live.tm = attotime::never;
cur_live.state = IDLE;
cur_live.next_state = -1;
}
void mos6530_base_t::live_abort()
{
if(!cur_live.tm.is_never() && cur_live.tm > machine().time()) {
rollback();
live_run(machine().time());
}
cur_live.tm = attotime::never;
cur_live.state = IDLE;
cur_live.next_state = -1;
cur_live.tm_irq = attotime::never;
}
void c8050_fdc_device::ds_w(int ds)
{
if (m_ds != ds)
{
live_sync();
m_ds = cur_live.ds = ds;
pll_reset(cur_live.tm);
if (LOG) logerror("%s %s DS %u\n", machine().time().as_string(), machine().describe_context(), ds);
checkpoint();
live_run();
}
}
void amiga_fdc::live_start()
{
cur_live.tm = machine().time();
cur_live.state = RUNNING;
cur_live.next_state = -1;
cur_live.shift_reg = 0;
cur_live.bit_counter = 0;
cur_live.pll.reset(cur_live.tm);
cur_live.pll.set_clock(clocks_to_attotime(1));
checkpoint_live = cur_live;
live_run();
}
void mos6530_base_t::live_start()
{
cur_live.period = attotime::from_ticks(m_prescale, clock());
cur_live.tm = machine().time() + attotime::from_hz(clock());
cur_live.state = RUNNING;
cur_live.next_state = -1;
cur_live.value = m_timer;
checkpoint();
live_run();
}
void amiga_fdc::dsklen_w(UINT16 data)
{
live_sync();
if(!(data & 0x8000) || (data == pre_dsklen)) {
dsklen = pre_dsklen = data;
dma_check();
dskbyt = dskbyt & 0x9fff;
if(data & 0x4000)
dskbyt |= 0x2000;
if(dma_state != DMA_IDLE)
dskbyt |= 0x4000;
} else
pre_dsklen = data;
live_run();
}
void c64h156_device::live_abort()
{
if(!cur_live.tm.is_never() && cur_live.tm > machine().time()) {
rollback();
live_run(machine().time());
}
stop_writing(cur_live.tm);
cur_live.tm = attotime::never;
cur_live.state = IDLE;
cur_live.next_state = -1;
cur_live.write_position = 0;
cur_live.write_start_time = attotime::never;
cur_live.sync = 1;
cur_live.byte = 1;
}
void c8050_fdc_t::live_abort()
{
if(!cur_live.tm.is_never() && cur_live.tm > machine().time()) {
rollback();
live_run(machine().time());
}
pll_stop_writing(get_floppy(), cur_live.tm);
cur_live.tm = attotime::never;
cur_live.state = IDLE;
cur_live.next_state = -1;
cur_live.ready = 1;
cur_live.brdy = 1;
cur_live.sync = 1;
cur_live.error = 1;
}
void amiga_fdc::live_sync()
{
if(!cur_live.tm.is_never()) {
if(cur_live.tm > machine().time()) {
rollback();
live_run(machine().time());
}
if(cur_live.tm == machine().time()) {
if(cur_live.next_state != -1) {
cur_live.state = cur_live.next_state;
cur_live.next_state = -1;
}
if(cur_live.state == IDLE)
cur_live.tm = attotime::never;
}
checkpoint();
}
}
void mos6530_base_t::live_sync()
{
if(!cur_live.tm.is_never()) {
if(cur_live.tm > machine().time()) {
rollback();
live_run(machine().time());
} else {
if(cur_live.next_state != -1) {
cur_live.state = cur_live.next_state;
cur_live.next_state = -1;
}
if(cur_live.state == IDLE) {
cur_live.tm = attotime::never;
}
}
cur_live.next_state = -1;
checkpoint();
}
}
void c2040_fdc_t::live_abort()
{
if(!cur_live.tm.is_never() && cur_live.tm > machine().time()) {
rollback();
live_run(machine().time());
}
stop_writing(cur_live.tm);
cur_live.tm = attotime::never;
cur_live.state = IDLE;
cur_live.next_state = -1;
cur_live.write_position = 0;
cur_live.write_start_time = attotime::never;
cur_live.ready = 1;
cur_live.sync = 1;
cur_live.error = 1;
}
void victor_9000_fdc_t::live_abort()
{
if(!cur_live.tm.is_never() && cur_live.tm > machine().time()) {
rollback();
live_run(machine().time());
}
pll_stop_writing(get_floppy(), cur_live.tm);
cur_live.tm = attotime::never;
cur_live.state = IDLE;
cur_live.next_state = -1;
cur_live.brdy = 1;
cur_live.lbrdy_changed = true;
cur_live.sync = 1;
cur_live.syn = 1;
cur_live.syn_changed = true;
cur_live.gcr_err = 1;
}
void victor_9000_fdc_t::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case TM_GEN:
live_sync();
live_run();
break;
case TM_TACH0:
m_tach0 = !m_tach0;
if (LOG_SCP) logerror("TACH0 %u\n", m_tach0);
break;
case TM_TACH1:
m_tach1 = !m_tach1;
if (LOG_SCP) logerror("TACH1 %u\n", m_tach1);
break;
}
}
void c8050_fdc_device::live_start()
{
cur_live.tm = machine().time();
cur_live.state = RUNNING;
cur_live.next_state = -1;
cur_live.shift_reg = 0;
cur_live.shift_reg_write = 0;
cur_live.bit_counter = 0;
cur_live.ds = m_ds;
cur_live.drv_sel = m_drv_sel;
cur_live.mode_sel = m_mode_sel;
cur_live.rw_sel = m_rw_sel;
cur_live.pi = m_pi;
pll_reset(cur_live.tm);
checkpoint_live = cur_live;
pll_save_checkpoint();
live_run();
}
void c2040_fdc_t::live_start()
{
cur_live.tm = machine().time();
cur_live.state = RUNNING;
cur_live.next_state = -1;
cur_live.shift_reg = 0;
cur_live.shift_reg_write = 0;
cur_live.cycle_counter = 0;
cur_live.cell_counter = 0;
cur_live.bit_counter = 0;
cur_live.ds = m_ds;
cur_live.drv_sel = m_drv_sel;
cur_live.mode_sel = m_mode_sel;
cur_live.rw_sel = m_rw_sel;
cur_live.pi = m_pi;
checkpoint_live = cur_live;
live_run();
}
UINT8 mos6530_base_t::timer_r(bool ie)
{
UINT8 data;
live_sync();
m_ie_timer = ie;
if (cur_live.tm_irq != machine().time()) {
m_irq_timer = false;
}
update_irq();
data = cur_live.value;
if (LOG_TIMER) logerror("%s %s %s '%s' Timer read %02x IE %u\n", machine().time().as_string(), machine().describe_context(), name(), tag(), data, m_ie_timer ? 1 : 0);
checkpoint();
live_run();
return data;
}
