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a1010: Add RTC (nw)

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This commit is contained in:
AJR 2018-08-13 01:58:15 -04:00
parent ffa32ab877
commit 226779f0f5
2 changed files with 51 additions and 3 deletions
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5
src/devices/machine/msm58321.h
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@ -81,6 +81,11 @@ public:
template <class Object> devcb_base &set_d2_handler(Object &&cb) { return m_d2_handler.set_callback(std::forward<Object>(cb)); }
template <class Object> devcb_base &set_d3_handler(Object &&cb) { return m_d3_handler.set_callback(std::forward<Object>(cb)); }
template <class Object> devcb_base &set_busy_handler(Object &&cb) { return m_busy_handler.set_callback(std::forward<Object>(cb)); }
auto d0_handler() { return m_d0_handler.bind(); }
auto d1_handler() { return m_d1_handler.bind(); }
auto d2_handler() { return m_d2_handler.bind(); }
auto d3_handler() { return m_d3_handler.bind(); }
auto busy_handler() { return m_busy_handler.bind(); }
void set_year0(int year0) { m_year0 = year0; }
void set_default_24h(bool default_24h) { m_default_24h = default_24h; }

49
src/mame/drivers/textelcomp.cpp
View File

@ -11,7 +11,7 @@
#include "machine/input_merger.h"
#include "machine/6522via.h"
#include "machine/mos6551.h"
//#include "machine/msm58321.h"
#include "machine/msm58321.h"
//#include "video/sed1330.h"
@ -21,18 +21,53 @@ public:
textelcomp_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_rtc(*this, "rtc")
, m_chargen(*this, "chargen")
{ }
void textelcomp(machine_config &config);
private:
virtual void machine_start() override;
void rtc_w(u8 data);
void mem_map(address_map &map);
required_device<cpu_device> m_maincpu;
required_device<msm58321_device> m_rtc;
required_region_ptr<u8> m_chargen;
};
void textelcomp_state::machine_start()
{
m_rtc->cs1_w(1);
}
void textelcomp_state::rtc_w(u8 data)
{
// Minimum address/data setup time is given as 0 µs in Oki and Epson datasheets
// Address and data are written to the VIA at the same time as the control strobes
if (!BIT(data, 5))
m_rtc->write_w(0);
if (!BIT(data, 6))
m_rtc->read_w(0);
if (!BIT(data, 7))
m_rtc->address_write_w(0);
m_rtc->d0_w(BIT(data, 0));
m_rtc->d1_w(BIT(data, 1));
m_rtc->d2_w(BIT(data, 2));
m_rtc->d3_w(BIT(data, 3));
if (BIT(data, 5))
m_rtc->write_w(1);
if (BIT(data, 6))
m_rtc->read_w(1);
if (BIT(data, 7))
m_rtc->address_write_w(1);
}
void textelcomp_state::mem_map(address_map &map)
{
map(0x0000, 0x1eff).ram(); // MB8464A-10L (battery backed?)
@ -65,7 +100,11 @@ void textelcomp_state::textelcomp(machine_config &config)
VIA6522(config, "via1", 3.6864_MHz_XTAL / 2); // GS65SC22P-2
VIA6522(config, "via2", 3.6864_MHz_XTAL / 2); // GS65SC22P-2
VIA6522(config, "via3", 3.6864_MHz_XTAL / 2); // GS65SC22P-2
via6522_device &via3(VIA6522(config, "via3", 3.6864_MHz_XTAL / 2)); // GS65SC22P-2
via3.writepa_handler().set(FUNC(textelcomp_state::rtc_w));
via3.ca2_handler().set(m_rtc, FUNC(msm58321_device::cs2_w)).invert();
via3.ca2_handler().append(m_rtc, FUNC(msm58321_device::stop_w)).invert();
mos6551_device &acia(MOS6551(config, "acia", 3.6864_MHz_XTAL / 2)); // GS65SC51P-2
acia.set_xtal(3.6864_MHz_XTAL / 2);
@ -73,7 +112,11 @@ void textelcomp_state::textelcomp(machine_config &config)
//SED1330(config, "lcdc", 6.4_MHz_XTAL); // SED1330F + B&W LCD
//MSM58321(config, "rtc", 32.768_kHz_XTAL); // RTC58321A
MSM58321(config, m_rtc, 32.768_kHz_XTAL); // RTC58321A
m_rtc->d0_handler().set("via3", FUNC(via6522_device::write_pa0));
m_rtc->d1_handler().set("via3", FUNC(via6522_device::write_pa1));
m_rtc->d2_handler().set("via3", FUNC(via6522_device::write_pa2));
m_rtc->d3_handler().set("via3", FUNC(via6522_device::write_pa3));
}