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macprtb: Add preliminary (not working) LLE PMU support. [R. Belmont]

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This commit is contained in:
arbee 2020-10-18 22:39:29 -04:00
parent 6808a82673
commit a24c699d06
1 changed files with 41 additions and 6 deletions
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47
src/mame/drivers/macprtb.cpp
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@ -51,12 +51,16 @@
#define C15M (C7M*2)
#define C32M (C15M*2)
// M50753 emulation needs some work before this is a thing.
//#define PMU_LLE
class macportable_state : public driver_device
{
public:
macportable_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_pmu(*this, "pmu"),
m_via1(*this, "via1"),
m_macadb(*this, "macadb"),
m_ncr5380(*this, "ncr5380"),
@ -76,6 +80,7 @@ public:
private:
required_device<m68000_device> m_maincpu;
required_device<m50753_device> m_pmu;
required_device<via6522_device> m_via1;
required_device<macadb_device> m_macadb;
required_device<ncr5380_device> m_ncr5380;
@ -108,7 +113,6 @@ private:
void field_interrupts();
DECLARE_WRITE_LINE_MEMBER(via_irq_w);
TIMER_CALLBACK_MEMBER(mac_6015_tick);
WRITE_LINE_MEMBER(via_cb2_w) { m_macadb->adb_data_w(state); }
int m_via_cycles, m_via_interrupt, m_scc_interrupt, m_asc_interrupt, m_last_taken_interrupt;
int m_irq_count, m_ca1_data, m_ca2_data;
@ -149,6 +153,12 @@ private:
m_asc_interrupt = state;
field_interrupts();
}
u8 m_pmu_from_via, m_pmu_to_via, m_pmu_ack, m_pmu_req;
u8 pmu_data_r() { return m_pmu_from_via; }
void pmu_data_w(u8 data) { m_pmu_to_via = data; }
u8 pmu_comms_r() { return (m_pmu_req<<7); }
void pmu_comms_w(u8 data) { m_pmu_ack = (data & 0x40)>>6; }
};
void macportable_state::field_interrupts()
@ -188,6 +198,8 @@ void macportable_state::machine_start()
m_via_interrupt = m_scc_interrupt = m_asc_interrupt = 0;
m_last_taken_interrupt = -1;
m_irq_count = m_ca1_data = m_ca2_data = 0;
m_pmu_to_via = m_pmu_from_via = 0;
m_pmu_ack = m_pmu_req = 0;
m_6015_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(macportable_state::mac_6015_tick),this));
m_6015_timer->adjust(attotime::never);
@ -353,14 +365,24 @@ void macportable_state::macprtb_map(address_map &map)
uint8_t macportable_state::mac_via_in_a()
{
#ifdef PMU_LLE
return m_pmu_to_via;
#else
return m_macadb->get_pm_data_recv();
#endif
}
uint8_t macportable_state::mac_via_in_b()
{
int val = 0;
// printf("Read VIA B: PM_ACK %x\n", m_pm_ack);
val = 0x80 | 0x04 | m_macadb->get_pm_ack(); // SCC wait/request (bit 2 must be set at 900c1a or startup tests always fail)
val = 0x80 | 0x04;
#ifdef PMU_LLE
val |= ((m_pmu_ack & 1)<<1);
#else
val |= m_macadb->get_pm_ack(); // SCC wait/request (bit 2 must be set at 900c1a or startup tests always fail)
#endif
// printf("%s VIA1 IN_B = %02x\n", machine().describe_context().c_str(), val);
@ -370,15 +392,22 @@ uint8_t macportable_state::mac_via_in_b()
void macportable_state::mac_via_out_a(uint8_t data)
{
// printf("%s VIA1 OUT A: %02x\n", machine().describe_context().c_str(), data);
#ifdef PMU_LLE
m_pmu_from_via = data;
#else
m_macadb->set_pm_data_send(data);
#endif
}
void macportable_state::mac_via_out_b(uint8_t data)
{
// printf("%s VIA1 OUT B: %02x\n", machine().describe_context().c_str(), data);
sony_set_sel_line(m_iwm.target(), (data & 0x20) >> 5);
#ifdef PMU_LLE
m_pmu_req = (data & 1);
#else
m_macadb->pmu_req_w(data & 1);
#endif
}
/***************************************************************************
@ -411,15 +440,22 @@ INPUT_PORTS_END
void macportable_state::macprtb(machine_config &config)
{
/* basic machine hardware */
/* basic machine hardware */
M68000(config, m_maincpu, C15M);
m_maincpu->set_addrmap(AS_PROGRAM, &macportable_state::macprtb_map);
M50753(config, "pmu", 3.93216_MHz_XTAL);
M50753(config, m_pmu, 3.93216_MHz_XTAL);
m_pmu->read_p<2>().set(FUNC(macportable_state::pmu_data_r));
m_pmu->write_p<2>().set(FUNC(macportable_state::pmu_data_w));
m_pmu->read_p<3>().set(FUNC(macportable_state::pmu_comms_r));
m_pmu->write_p<3>().set(FUNC(macportable_state::pmu_comms_w));
M50740(config, "kybd", 3.93216_MHz_XTAL).set_disable();
#ifdef PMU_LLE
config.set_perfect_quantum(m_maincpu);
#endif
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_refresh_hz(60.15);
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(1260));
@ -451,7 +487,6 @@ void macportable_state::macprtb(machine_config &config)
m_via1->writepa_handler().set(FUNC(macportable_state::mac_via_out_a));
m_via1->writepb_handler().set(FUNC(macportable_state::mac_via_out_b));
m_via1->irq_handler().set(FUNC(macportable_state::via_irq_w));
m_via1->cb2_handler().set(FUNC(macportable_state::via_cb2_w));
SPEAKER(config, "lspeaker").front_left();
SPEAKER(config, "rspeaker").front_right();