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fmtowns: use msm/rtc58321 (nw)

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This commit is contained in:
cracyc 2018-01-28 08:47:54 -06:00
parent e8795aaf59
commit 1b1dc40e09
1 changed files with 37 additions and 78 deletions
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115
src/mame/drivers/fmtowns.cpp
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@ -267,34 +267,6 @@ void towns_state::init_serial_rom()
m_towns_serial_rom[25] = 0x10;
}
void towns_state::init_rtc()
{
system_time systm;
machine().base_datetime(systm);
// seconds
m_towns_rtc_reg[0] = systm.local_time.second % 10;
m_towns_rtc_reg[1] = systm.local_time.second / 10;
// minutes
m_towns_rtc_reg[2] = systm.local_time.minute % 10;
m_towns_rtc_reg[3] = systm.local_time.minute / 10;
// hours
m_towns_rtc_reg[4] = systm.local_time.hour % 10;
m_towns_rtc_reg[5] = systm.local_time.hour / 10;
// weekday
m_towns_rtc_reg[6] = systm.local_time.weekday;
// day
m_towns_rtc_reg[7] = systm.local_time.mday % 10;
m_towns_rtc_reg[8] = systm.local_time.mday / 10;
// month
m_towns_rtc_reg[9] = (systm.local_time.month + 1) % 10;
m_towns_rtc_reg[10] = (systm.local_time.month + 1) / 10;
// year
m_towns_rtc_reg[11] = (systm.local_time.year - 2000) % 10;
m_towns_rtc_reg[12] = (systm.local_time.year - 2000) / 10;
}
READ8_MEMBER(towns_state::towns_system_r)
{
uint8_t ret = 0;
@ -417,9 +389,6 @@ void towns_state::device_timer(emu_timer &timer, device_timer_id id, int param,
{
switch(id)
{
case TIMER_RTC:
rtc_second();
break;
case TIMER_FREERUN:
freerun_inc();
break;
@ -1956,67 +1925,49 @@ WRITE8_MEMBER(towns_state::towns_cdrom_w)
*/
READ8_MEMBER(towns_state::towns_rtc_r)
{
return 0x80 | m_towns_rtc_reg[m_towns_rtc_select];
return (m_rtc_busy ? 0 : 0x80) | m_rtc_d;
}
WRITE8_MEMBER(towns_state::towns_rtc_w)
{
m_towns_rtc_data = data;
m_rtc->d0_w(data & 1 ? ASSERT_LINE : CLEAR_LINE);
m_rtc->d1_w(data & 2 ? ASSERT_LINE : CLEAR_LINE);
m_rtc->d2_w(data & 4 ? ASSERT_LINE : CLEAR_LINE);
m_rtc->d3_w(data & 8 ? ASSERT_LINE : CLEAR_LINE);
}
WRITE8_MEMBER(towns_state::towns_rtc_select_w)
{
if(data & 0x80)
{
if(data & 0x01)
m_towns_rtc_select = m_towns_rtc_data & 0x0f;
}
m_rtc->cs1_w(data & 0x80 ? ASSERT_LINE : CLEAR_LINE);
m_rtc->cs2_w(data & 0x80 ? ASSERT_LINE : CLEAR_LINE);
m_rtc->read_w(data & 4 ? ASSERT_LINE : CLEAR_LINE);
m_rtc->write_w(data & 2 ? ASSERT_LINE : CLEAR_LINE);
m_rtc->address_write_w(data & 1 ? ASSERT_LINE : CLEAR_LINE);
}
void towns_state::rtc_hour()
WRITE_LINE_MEMBER(towns_state::rtc_d0_w)
{
m_towns_rtc_reg[4]++;
if(m_towns_rtc_reg[4] > 4 && m_towns_rtc_reg[5] == 2)
{
m_towns_rtc_reg[4] = 0;
m_towns_rtc_reg[5] = 0;
}
else if(m_towns_rtc_reg[4] > 9)
{
m_towns_rtc_reg[4] = 0;
m_towns_rtc_reg[5]++;
}
m_rtc_d = (m_rtc_d & ~1) | (state == ASSERT_LINE ? 1 : 0);
}
void towns_state::rtc_minute()
WRITE_LINE_MEMBER(towns_state::rtc_d1_w)
{
m_towns_rtc_reg[2]++;
if(m_towns_rtc_reg[2] > 9)
{
m_towns_rtc_reg[2] = 0;
m_towns_rtc_reg[3]++;
if(m_towns_rtc_reg[3] > 5)
{
m_towns_rtc_reg[3] = 0;
rtc_hour();
}
}
m_rtc_d = (m_rtc_d & ~2) | (state == ASSERT_LINE ? 2 : 0);
}
void towns_state::rtc_second()
WRITE_LINE_MEMBER(towns_state::rtc_d2_w)
{
// increase RTC time by one second
m_towns_rtc_reg[0]++;
if(m_towns_rtc_reg[0] > 9)
{
m_towns_rtc_reg[0] = 0;
m_towns_rtc_reg[1]++;
if(m_towns_rtc_reg[1] > 5)
{
m_towns_rtc_reg[1] = 0;
rtc_minute();
}
}
m_rtc_d = (m_rtc_d & ~4) | (state == ASSERT_LINE ? 4 : 0);
}
WRITE_LINE_MEMBER(towns_state::rtc_d3_w)
{
m_rtc_d = (m_rtc_d & ~8) | (state == ASSERT_LINE ? 8 : 0);
}
WRITE_LINE_MEMBER(towns_state::rtc_busy_w)
{
m_rtc_busy = state == ASSERT_LINE ? true : false;
}
// SCSI controller - I/O ports 0xc30 and 0xc32
@ -2690,8 +2641,6 @@ void towns_state::driver_start()
//towns_sprram = std::make_unique<uint8_t[]>(0x20000);
m_towns_serial_rom = std::make_unique<uint8_t[]>(256/8);
init_serial_rom();
init_rtc();
m_towns_rtc_timer = timer_alloc(TIMER_RTC);
m_towns_kb_timer = timer_alloc(TIMER_KEYBOARD);
m_towns_mouse_timer = timer_alloc(TIMER_MOUSE);
m_towns_wait_timer = timer_alloc(TIMER_WAIT);
@ -2750,10 +2699,11 @@ void towns_state::machine_reset()
m_intervaltimer2_timeout_flag = 0;
m_intervaltimer2_timeout_flag2 = 0;
m_intervaltimer2_irqmask = 1; // masked
m_towns_rtc_timer->adjust(attotime::zero,0,attotime::from_hz(1));
m_towns_kb_timer->adjust(attotime::zero,0,attotime::from_msec(10));
m_towns_freerun_counter->adjust(attotime::zero,0,attotime::from_usec(1));
m_serial_irq_source = 0;
m_rtc_d = 0;
m_rtc_busy = false;
}
READ8_MEMBER(towns_state::get_slave_ack)
@ -2918,6 +2868,15 @@ MACHINE_CONFIG_START(towns_state::towns_base)
MCFG_RAM_ADD(RAM_TAG)
MCFG_RAM_DEFAULT_SIZE("6M")
MCFG_RAM_EXTRA_OPTIONS("2M,4M,8M,16M,32M,64M,96M")
MCFG_DEVICE_ADD("rtc58321", MSM58321, 32768_Hz_XTAL)
MCFG_MSM58321_D0_HANDLER(WRITELINE(towns_state, rtc_d0_w))
MCFG_MSM58321_D1_HANDLER(WRITELINE(towns_state, rtc_d1_w))
MCFG_MSM58321_D2_HANDLER(WRITELINE(towns_state, rtc_d2_w))
MCFG_MSM58321_D3_HANDLER(WRITELINE(towns_state, rtc_d3_w))
MCFG_MSM58321_BUSY_HANDLER(WRITELINE(towns_state, rtc_busy_w))
MCFG_MSM58321_YEAR0(2000)
MCFG_MSM58321_DEFAULT_24H(true)
MACHINE_CONFIG_END
MACHINE_CONFIG_START(towns_state::towns)