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cms6502: Use new RTC device (nw)

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This commit is contained in:
AJR 2020-04-07 21:06:58 -04:00
parent 2d68e6dae9
commit 4d4b63b915
1 changed files with 5 additions and 133 deletions
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138
src/mame/drivers/cms.cpp
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@ -23,7 +23,7 @@
&FC00-&FC0F CPU card VIA &FC00-&FC0F CPU card VIA
&FC10-&FC1F GDP card control register &FC10-&FC1F GDP card control register
&FC20-&FC2F GDP card colour register &FC20-&FC2F GDP card colour register
&FC30-&FC3F Real-Time-Clock registers &FC30-&FC3F Real-Time-Clock registers (EM M3002)
&FC40-&FC4F Disc controller registers &FC40-&FC4F Disc controller registers
&FC50-&FC5F Disc controller drive select register &FC50-&FC5F Disc controller drive select register
&FC60-&FC6F IEEE controller card &FC60-&FC6F IEEE controller card
@ -48,6 +48,7 @@
#include "cpu/m6502/m6502.h" #include "cpu/m6502/m6502.h"
#include "machine/6522via.h" #include "machine/6522via.h"
#include "machine/input_merger.h" #include "machine/input_merger.h"
#include "machine/m3002.h"
#include "bus/acorn/bus.h" #include "bus/acorn/bus.h"
#include "coreutil.h" #include "coreutil.h"
@ -76,10 +77,6 @@ private:
DECLARE_WRITE8_MEMBER(map_select_w); DECLARE_WRITE8_MEMBER(map_select_w);
DECLARE_WRITE8_MEMBER(page_select_w); DECLARE_WRITE8_MEMBER(page_select_w);
DECLARE_WRITE_LINE_MEMBER(bus_nmi_w); DECLARE_WRITE_LINE_MEMBER(bus_nmi_w);
DECLARE_READ8_MEMBER(cms_rtc_r);
DECLARE_WRITE8_MEMBER(cms_rtc_w);
void cms_rtc_set_time();
required_device<cpu_device> m_maincpu; required_device<cpu_device> m_maincpu;
required_memory_region m_rom; required_memory_region m_rom;
@ -92,18 +89,6 @@ private:
uint8_t m_map_select; uint8_t m_map_select;
uint8_t m_page_select[4]; uint8_t m_page_select[4];
uint8_t m_rtc_data[0x10];
int m_rtc_reg;
int m_rtc_state;
void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
emu_timer* m_rtc_timer;
enum
{
TIMER_RTC
};
}; };
@ -114,7 +99,7 @@ void cms_state::cms6502_mem(address_map &map)
map(0x8000, 0xbfff).bankr("bank1").w(FUNC(cms_state::page_select_w)); map(0x8000, 0xbfff).bankr("bank1").w(FUNC(cms_state::page_select_w));
map(0xc000, 0xffff).rom().region("mos", 0); map(0xc000, 0xffff).rom().region("mos", 0);
map(0xfc00, 0xfc0f).m(m_via, FUNC(via6522_device::map)); map(0xfc00, 0xfc0f).m(m_via, FUNC(via6522_device::map));
map(0xfc30, 0xfc3f).rw(FUNC(cms_state::cms_rtc_r), FUNC(cms_state::cms_rtc_w)); map(0xfc30, 0xfc30).mirror(0xf).rw("rtc", FUNC(m3002_device::read), FUNC(m3002_device::write));
map(0xfc70, 0xfc7f).w(FUNC(cms_state::map_select_w)); map(0xfc70, 0xfc7f).w(FUNC(cms_state::map_select_w));
} }
@ -145,14 +130,6 @@ void cms_state::machine_start()
{ {
m_bank1->configure_entries(0, 16, m_rom->base(), 0x4000); m_bank1->configure_entries(0, 16, m_rom->base(), 0x4000);
memset(&m_rtc_data, 0, sizeof(m_rtc_data));
m_rtc_reg = 0;
m_rtc_state = 0;
m_rtc_data[0xf] = 1;
m_rtc_timer = timer_alloc();
m_rtc_timer->adjust(attotime::zero, 0, attotime(1, 0));
/* register for save states */ /* register for save states */
save_item(NAME(m_map_select)); save_item(NAME(m_map_select));
save_item(NAME(m_page_select)); save_item(NAME(m_page_select));
@ -169,113 +146,6 @@ void cms_state::machine_reset()
m_bank1->set_entry(0); m_bank1->set_entry(0);
} }
/* Real Time Clock and NVRAM EM M3002
reg 0: seconds
reg 1: minutes
reg 2: hours
reg 3: day 1 based
reg 4: month 1 based
reg 5: year
reg 6: week day
reg 7: week number
reg ..
reg 15: status
*/
void cms_state::cms_rtc_set_time()
{
system_time systime;
/* get the current date/time from the core */
machine().current_datetime(systime);
m_rtc_data[0] = dec_2_bcd(systime.utc_time.second);
m_rtc_data[1] = dec_2_bcd(systime.utc_time.minute);
m_rtc_data[2] = dec_2_bcd(systime.utc_time.hour);
m_rtc_data[3] = dec_2_bcd(systime.utc_time.mday);
m_rtc_data[4] = dec_2_bcd(systime.utc_time.month + 1);
m_rtc_data[5] = dec_2_bcd(systime.utc_time.year % 100);
}
void cms_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
int month, year;
switch (id)
{
case TIMER_RTC:
m_rtc_data[0] = bcd_adjust(m_rtc_data[0] + 1);
if (m_rtc_data[0] >= 0x60)
{
m_rtc_data[0] = 0;
m_rtc_data[1] = bcd_adjust(m_rtc_data[1] + 1);
if (m_rtc_data[1] >= 0x60)
{
m_rtc_data[1] = 0;
m_rtc_data[2] = bcd_adjust(m_rtc_data[2] + 1);
if (m_rtc_data[2] >= 0x24)
{
m_rtc_data[2] = 0;
m_rtc_data[3] = bcd_adjust(m_rtc_data[3] + 1);
month = bcd_2_dec(m_rtc_data[4]);
year = bcd_2_dec(m_rtc_data[5]) + 2000; // save for julian_days_in_month_calculation
if (m_rtc_data[3]> gregorian_days_in_month(month, year))
{
m_rtc_data[3] = 1;
m_rtc_data[4] = bcd_adjust(m_rtc_data[4] + 1);
if (m_rtc_data[4]>0x12)
{
m_rtc_data[4] = 1;
m_rtc_data[5] = bcd_adjust(m_rtc_data[5] + 1) & 0xff;
}
}
}
}
}
break;
}
}
READ8_MEMBER(cms_state::cms_rtc_r)
{
int data = 0;
switch (m_rtc_state)
{
case 1:
data = (m_rtc_data[m_rtc_reg] & 0xf0) >> 4;
m_rtc_state++;
break;
case 2:
data = m_rtc_data[m_rtc_reg] & 0xf;
m_rtc_state = 0;
break;
}
return data;
}
WRITE8_MEMBER(cms_state::cms_rtc_w)
{
switch (m_rtc_state)
{
case 0:
m_rtc_reg = data;
m_rtc_state = 1;
break;
case 1:
m_rtc_data[m_rtc_reg] = (m_rtc_data[m_rtc_reg] & ~0xf0) | ((data & 0xf) << 4);
m_rtc_state++;
break;
case 2:
m_rtc_data[m_rtc_reg] = (m_rtc_data[m_rtc_reg] & ~0xf) | (data & 0xf);
m_rtc_state = 0;
break;
}
}
WRITE_LINE_MEMBER(cms_state::bus_nmi_w) WRITE_LINE_MEMBER(cms_state::bus_nmi_w)
{ {
@ -297,6 +167,8 @@ void cms_state::cms6502(machine_config &config)
VIA6522(config, m_via, 1_MHz_XTAL); VIA6522(config, m_via, 1_MHz_XTAL);
m_via->irq_handler().set("irqs", FUNC(input_merger_device::in_w<0>)); m_via->irq_handler().set("irqs", FUNC(input_merger_device::in_w<0>));
M3002(config, "rtc", 32768);
/* 7 Slot Backplane */ /* 7 Slot Backplane */
ACORN_BUS(config, m_bus, 0); ACORN_BUS(config, m_bus, 0);
m_bus->set_space(m_maincpu, AS_PROGRAM); m_bus->set_space(m_maincpu, AS_PROGRAM);