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author AJR <ajrhacker@users.noreply.github.com>2019-11-05 19:10:48 -0500
committer AJR <ajrhacker@users.noreply.github.com>2019-11-05 19:12:41 -0500
commit273ec503fbf9e3aab6f2e18b0ff8f2a44bf76294 (patch)
treeea0ce105c7bd01a5b17c640690563d9288a00836
parentb6ba86f4cba4455388f29facf08facafc90e09f3 (diff)
st2xxx: Refactoring (nw)
- Centralize emulation of several common features - Add logging for interrupts and base timer - Fix error in debug state registration of IREQ and IENA - Correct base timer interrupt vector for ST2205U
-rw-r--r--src/devices/cpu/m6502/st2204.cpp200
-rw-r--r--src/devices/cpu/m6502/st2204.h45
-rw-r--r--src/devices/cpu/m6502/st2205u.cpp223
-rw-r--r--src/devices/cpu/m6502/st2205u.h35
-rw-r--r--src/devices/cpu/m6502/st2xxx.cpp313
-rw-r--r--src/devices/cpu/m6502/st2xxx.h59
6 files changed, 449 insertions, 426 deletions
diff --git a/src/devices/cpu/m6502/st2204.cpp b/src/devices/cpu/m6502/st2204.cpp
index 3a6c794ba8b..7bea561baf4 100644
--- a/src/devices/cpu/m6502/st2204.cpp
+++ b/src/devices/cpu/m6502/st2204.cpp
@@ -37,24 +37,13 @@ st2204_device::st2204_device(const machine_config &mconfig, const char *tag, dev
: st2xxx_device(mconfig, ST2204, tag, owner, clock,
address_map_constructor(FUNC(st2204_device::int_map), this),
26, // logical; only 23 address lines are brought out
- 0x0f7f)
- , m_bten(0)
- , m_btsr(0)
- , m_base_timer{0}
+ false)
, m_dms(0)
, m_dmd(0)
, m_dcnth(0)
{
}
-template<int N>
-TIMER_CALLBACK_MEMBER(st2204_device::bt_interrupt)
-{
- m_btsr |= 1 << N;
- m_ireq |= 0x020;
- update_irq_state();
-}
-
void st2204_device::device_start()
{
std::unique_ptr<mi_st2204> intf = std::make_unique<mi_st2204>();
@@ -67,43 +56,21 @@ void st2204_device::device_start()
intf->dmr = 0;
intf->irq_service = false;
- m_base_timer[0] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<0>), this));
- m_base_timer[1] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<1>), this));
- m_base_timer[2] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<2>), this));
- m_base_timer[3] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<3>), this));
- m_base_timer[4] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2204_device::bt_interrupt<4>), this));
-
- save_item(NAME(m_pdata));
- save_item(NAME(m_pctrl));
- save_item(NAME(m_psel));
- save_item(NAME(m_pfun));
- save_item(NAME(m_bten));
- save_item(NAME(m_btsr));
+ init_base_timer(0x0020);
+
save_item(NAME(m_dms));
save_item(NAME(m_dmd));
save_item(NAME(m_dcnth));
- save_item(NAME(m_sys));
- save_item(NAME(m_pmcr));
- save_item(NAME(m_ireq));
- save_item(NAME(m_iena));
- save_item(NAME(m_lssa));
- save_item(NAME(m_lvpw));
- save_item(NAME(m_lxmax));
- save_item(NAME(m_lymax));
- save_item(NAME(intf->irr_enable));
- save_item(NAME(intf->irr));
- save_item(NAME(intf->prr));
- save_item(NAME(intf->drr));
- save_item(NAME(intf->irq_service));
mintf = std::move(intf);
+ save_common_registers();
init();
state_add(ST_IRR, "IRR", downcast<mi_st2204 &>(*mintf).irr).mask(0xff);
state_add(ST_PRR, "PRR", downcast<mi_st2204 &>(*mintf).prr).mask(0xfff);
state_add(ST_DRR, "DRR", downcast<mi_st2204 &>(*mintf).drr).mask(0x7ff);
- state_add<u8>(ST_IREQ, "IREQ", [this]() { return m_ireq; }, [this](u16 data) { m_ireq = data; update_irq_state(); }).mask(m_ireq_mask);
- state_add<u8>(ST_IENA, "IENA", [this]() { return m_iena; }, [this](u16 data) { m_iena = data; update_irq_state(); }).mask(m_ireq_mask);
+ state_add<u16>(ST_IREQ, "IREQ", [this]() { return m_ireq; }, [this](u16 data) { m_ireq = data; update_irq_state(); }).mask(st2xxx_ireq_mask());
+ state_add<u16>(ST_IENA, "IENA", [this]() { return m_iena; }, [this](u16 data) { m_iena = data; update_irq_state(); }).mask(st2xxx_ireq_mask());
for (int i = 0; i < 5; i++)
{
state_add(ST_PDA + i, string_format("PD%c", 'A' + i).c_str(), m_pdata[i]);
@@ -131,16 +98,25 @@ void st2204_device::device_start()
void st2204_device::device_reset()
{
st2xxx_device::device_reset();
+}
- mi_st2204 &m = downcast<mi_st2204 &>(*mintf);
- m.irr_enable = false;
- m.irr = 0;
- m.prr = 0;
- m.drr = 0;
- m.dmr = 0;
-
- bten_w(0);
- m_btsr = 0;
+const char *st2204_device::st2xxx_irq_name(int i) const
+{
+ switch (i)
+ {
+ case 0: return "PC0 edge";
+ case 1: return "DAC reload";
+ case 2: return "Timer 0";
+ case 3: return "Timer 1";
+ case 4: return "PA transition";
+ case 5: return "Base timer";
+ case 6: return "LCD frame";
+ case 8: return "SPI TX empty";
+ case 9: return "SPI RX ready";
+ case 10: return "UART TX";
+ case 11: return "UART RX";
+ default: return "Reserved";
+ }
}
u8 st2204_device::mi_st2204::pread(u16 adr)
@@ -219,103 +195,13 @@ void st2204_device::pmcr_w(u8 data)
m_pmcr = data;
}
-u8 st2204_device::bten_r()
-{
- return m_bten;
-}
-
-void st2204_device::bten_w(u8 data)
-{
- for (int n = 0; n < 5; n++)
- {
- if (BIT(data, n) && !BIT(m_bten, n))
- {
- // 2 Hz, 8 Hz, 64 Hz, 256 Hz, 2048 Hz
- attotime period = attotime::from_hz(2 << ((n & 1) * 2 + (n >> 1) * 5));
- m_base_timer[n]->adjust(period, 0, period);
- }
- else if (!BIT(data, n) && BIT(m_bten, n))
- m_base_timer[n]->adjust(attotime::never);
- }
-
- m_bten = data & 0x1f;
-}
-
-u8 st2204_device::btsr_r()
-{
- return m_btsr;
-}
-
-void st2204_device::btsr_w(u8 data)
-{
- // Only bit 7 has any effect
- if (BIT(data, 7))
- m_btsr = 0;
-}
-
-u8 st2204_device::sys_r()
-{
- return m_sys | 0x01;
-}
-
-void st2204_device::sys_w(u8 data)
-{
- m_sys = data;
- downcast<mi_st2204 &>(*mintf).irr_enable = BIT(data, 1);
-}
-
-u8 st2204_device::irr_r()
-{
- return downcast<mi_st2204 &>(*mintf).irr;
-}
-
-void st2204_device::irr_w(u8 data)
-{
- downcast<mi_st2204 &>(*mintf).irr = data;
-}
-
-u8 st2204_device::prrl_r()
-{
- return downcast<mi_st2204 &>(*mintf).prr & 0xff;
-}
-
-void st2204_device::prrl_w(u8 data)
-{
- u16 &prr = downcast<mi_st2204 &>(*mintf).prr;
- prr = data | (prr & 0x0f00);
-}
-
-u8 st2204_device::prrh_r()
-{
- return downcast<mi_st2204 &>(*mintf).prr >> 8;
-}
-
-void st2204_device::prrh_w(u8 data)
-{
- u16 &prr = downcast<mi_st2204 &>(*mintf).prr;
- prr = u16(data & 0x0f) << 8 | (prr & 0x00ff);
-}
-
-u8 st2204_device::drrl_r()
-{
- return downcast<mi_st2204 &>(*mintf).drr & 0xff;
-}
-
-void st2204_device::drrl_w(u8 data)
-{
- u16 &drr = downcast<mi_st2204 &>(*mintf).drr;
- drr = data | (drr & 0x0700);
-}
-
-u8 st2204_device::drrh_r()
-{
- return downcast<mi_st2204 &>(*mintf).drr >> 8;
-}
-
-void st2204_device::drrh_w(u8 data)
+unsigned st2204_device::st2xxx_bt_divider(int n) const
{
- u16 &drr = downcast<mi_st2204 &>(*mintf).drr;
- drr = u16(data & 0x07) << 8 | (drr & 0x00ff);
+ // 2 Hz, 8 Hz, 64 Hz, 256 Hz, 2048 Hz
+ if (n < 5)
+ return 16384 >> ((n & 1) * 2 + (n >> 1) * 5);
+ else
+ return 0;
}
u8 st2204_device::dmsl_r()
@@ -388,28 +274,6 @@ void st2204_device::dcnth_w(u8 data)
m_dcnth = data & 0x1f;
}
-u8 st2204_device::dmrl_r()
-{
- return downcast<mi_st2204 &>(*mintf).dmr & 0xff;
-}
-
-void st2204_device::dmrl_w(u8 data)
-{
- u16 &dmr = downcast<mi_st2204 &>(*mintf).dmr;
- dmr = data | (dmr & 0x0700);
-}
-
-u8 st2204_device::dmrh_r()
-{
- return downcast<mi_st2204 &>(*mintf).dmr >> 8;
-}
-
-void st2204_device::dmrh_w(u8 data)
-{
- u16 &dmr = downcast<mi_st2204 &>(*mintf).dmr;
- dmr = (data & 0x07) << 8 | (dmr & 0x00ff);
-}
-
u8 st2204_device::pmem_r(offs_t offset)
{
return downcast<mi_st2204 &>(*mintf).pread(offset);
@@ -439,7 +303,7 @@ void st2204_device::int_map(address_map &map)
map(0x000e, 0x000e).rw(FUNC(st2204_device::pfd_r), FUNC(st2204_device::pfd_w));
map(0x000f, 0x000f).rw(FUNC(st2204_device::pmcr_r), FUNC(st2204_device::pmcr_w));
map(0x0020, 0x0020).rw(FUNC(st2204_device::bten_r), FUNC(st2204_device::bten_w));
- map(0x0021, 0x0021).rw(FUNC(st2204_device::btsr_r), FUNC(st2204_device::btsr_w));
+ map(0x0021, 0x0021).rw(FUNC(st2204_device::btsr_r), FUNC(st2204_device::btclr_all_w));
// Source/destination registers are not readable on ST2202, but may be readable here (count register isn't)
map(0x0028, 0x0028).rw(FUNC(st2204_device::dmsl_r), FUNC(st2204_device::dmsl_w));
map(0x0029, 0x0029).rw(FUNC(st2204_device::dmsh_r), FUNC(st2204_device::dmsh_w));
@@ -448,7 +312,7 @@ void st2204_device::int_map(address_map &map)
map(0x002c, 0x002c).w(FUNC(st2204_device::dcntl_w));
map(0x002d, 0x002d).w(FUNC(st2204_device::dcnth_w));
map(0x0030, 0x0030).rw(FUNC(st2204_device::sys_r), FUNC(st2204_device::sys_w));
- map(0x0031, 0x0031).rw(FUNC(st2204_device::irr_r), FUNC(st2204_device::irr_w));
+ map(0x0031, 0x0031).rw(FUNC(st2204_device::irrl_r), FUNC(st2204_device::irrl_w));
map(0x0032, 0x0032).rw(FUNC(st2204_device::prrl_r), FUNC(st2204_device::prrl_w));
map(0x0033, 0x0033).rw(FUNC(st2204_device::prrh_r), FUNC(st2204_device::prrh_w));
map(0x0034, 0x0034).rw(FUNC(st2204_device::drrl_r), FUNC(st2204_device::drrl_w));
diff --git a/src/devices/cpu/m6502/st2204.h b/src/devices/cpu/m6502/st2204.h
index 63ef404ea48..fbc1f69563d 100644
--- a/src/devices/cpu/m6502/st2204.h
+++ b/src/devices/cpu/m6502/st2204.h
@@ -17,11 +17,8 @@ class st2204_device : public st2xxx_device
{
public:
enum {
- ST_BTEN = ST_LYMAX + 1,
- ST_BTSR,
- ST_DMS,
- ST_DMD,
- ST_DMR
+ ST_DMS = ST_LYMAX + 1,
+ ST_DMD
};
st2204_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
@@ -30,6 +27,12 @@ protected:
virtual void device_start() override;
virtual void device_reset() override;
+ virtual u16 st2xxx_ireq_mask() const override { return 0x0f7f; }
+ virtual const char *st2xxx_irq_name(int i) const override;
+ virtual unsigned st2xxx_bt_divider(int n) const override;
+ virtual u8 st2xxx_sys_mask() const override { return 0xff; }
+ virtual bool st2xxx_has_dma() const override { return true; }
+
private:
class mi_st2204 : public mi_st2xxx {
public:
@@ -46,34 +49,10 @@ private:
u8 dread(u16 adr);
u8 dreadc(u16 adr);
void dwrite(u16 adr, u8 val);
-
- bool irr_enable;
- u8 irr;
- u16 prr;
- u16 drr;
- u16 dmr;
};
- template<int N> TIMER_CALLBACK_MEMBER(bt_interrupt);
-
- u8 sys_r();
- void sys_w(u8 data);
- u8 irr_r();
- void irr_w(u8 data);
- u8 prrl_r();
- void prrl_w(u8 data);
- u8 prrh_r();
- void prrh_w(u8 data);
- u8 drrl_r();
- void drrl_w(u8 data);
- u8 drrh_r();
- void drrh_w(u8 data);
u8 pmcr_r();
void pmcr_w(u8 data);
- u8 bten_r();
- void bten_w(u8 data);
- u8 btsr_r();
- void btsr_w(u8 data);
u8 dmsl_r();
void dmsl_w(u8 data);
u8 dmsh_r();
@@ -84,10 +63,6 @@ private:
void dmdh_w(u8 data);
void dcntl_w(u8 data);
void dcnth_w(u8 data);
- u8 dmrl_r();
- void dmrl_w(u8 data);
- u8 dmrh_r();
- void dmrh_w(u8 data);
u8 pmem_r(offs_t offset);
void pmem_w(offs_t offset, u8 data);
@@ -96,10 +71,6 @@ private:
void int_map(address_map &map);
- u8 m_bten;
- u8 m_btsr;
- emu_timer *m_base_timer[5];
-
u16 m_dms;
u16 m_dmd;
u8 m_dcnth;
diff --git a/src/devices/cpu/m6502/st2205u.cpp b/src/devices/cpu/m6502/st2205u.cpp
index e43b79dc449..180300cdb64 100644
--- a/src/devices/cpu/m6502/st2205u.cpp
+++ b/src/devices/cpu/m6502/st2205u.cpp
@@ -39,23 +39,12 @@ st2205u_device::st2205u_device(const machine_config &mconfig, const char *tag, d
: st2xxx_device(mconfig, ST2205U, tag, owner, clock,
address_map_constructor(FUNC(st2205u_device::int_map), this),
26, // logical; only 23 address lines are brought out
- 0xdfff)
- , m_bten(0)
- , m_btreq(0)
+ true)
, m_btc(0)
- , m_base_timer{0}
, m_lvctr(0)
{
}
-template<int N>
-TIMER_CALLBACK_MEMBER(st2205u_device::bt_interrupt)
-{
- m_btreq |= 1 << N;
- m_ireq |= 0x0020;
- update_irq_state();
-}
-
void st2205u_device::device_start()
{
std::unique_ptr<mi_st2205u> intf = std::make_unique<mi_st2205u>();
@@ -67,51 +56,24 @@ void st2205u_device::device_start()
intf->drr = 0;
intf->brr = 0;
intf->irq_service = false;
-
- m_base_timer[0] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2205u_device::bt_interrupt<0>), this));
- m_base_timer[1] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2205u_device::bt_interrupt<1>), this));
- m_base_timer[2] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2205u_device::bt_interrupt<2>), this));
- m_base_timer[3] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2205u_device::bt_interrupt<3>), this));
- m_base_timer[4] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2205u_device::bt_interrupt<4>), this));
- m_base_timer[5] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2205u_device::bt_interrupt<5>), this));
- m_base_timer[6] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2205u_device::bt_interrupt<6>), this));
- m_base_timer[7] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2205u_device::bt_interrupt<7>), this));
-
intf->ram = make_unique_clear<u8[]>(0x8000);
- save_item(NAME(m_pdata));
- save_item(NAME(m_pctrl));
- save_item(NAME(m_psel));
- save_item(NAME(m_pfun));
- save_item(NAME(m_bten));
- save_item(NAME(m_btreq));
+ init_base_timer(0x0040);
+
save_item(NAME(m_btc));
- save_item(NAME(m_sys));
- save_item(NAME(m_pmcr));
- save_item(NAME(m_ireq));
- save_item(NAME(m_iena));
- save_item(NAME(m_lssa));
- save_item(NAME(m_lvpw));
- save_item(NAME(m_lxmax));
- save_item(NAME(m_lymax));
- save_item(NAME(m_lvctr));
- save_item(NAME(intf->irr_enable));
- save_item(NAME(intf->irr));
- save_item(NAME(intf->prr));
- save_item(NAME(intf->drr));
save_item(NAME(intf->brr));
- save_item(NAME(intf->irq_service));
save_pointer(NAME(intf->ram), 0x8000);
mintf = std::move(intf);
+ save_common_registers();
init();
state_add(ST_IRR, "IRR", downcast<mi_st2205u &>(*mintf).irr).mask(0x87ff);
state_add(ST_PRR, "PRR", downcast<mi_st2205u &>(*mintf).prr).mask(0x87ff);
state_add(ST_DRR, "DRR", downcast<mi_st2205u &>(*mintf).drr).mask(0x8fff);
state_add(ST_BRR, "BRR", downcast<mi_st2205u &>(*mintf).brr).mask(0x9fff);
- state_add<u8>(ST_IREQ, "IREQ", [this]() { return m_ireq; }, [this](u16 data) { m_ireq = data; update_irq_state(); }).mask(m_ireq_mask);
- state_add<u8>(ST_IENA, "IENA", [this]() { return m_iena; }, [this](u16 data) { m_iena = data; update_irq_state(); }).mask(m_ireq_mask);
+ state_add<u16>(ST_IREQ, "IREQ", [this]() { return m_ireq; }, [this](u16 data) { m_ireq = data; update_irq_state(); }).mask(st2xxx_ireq_mask());
+ state_add<u16>(ST_IENA, "IENA", [this]() { return m_iena; }, [this](u16 data) { m_iena = data; update_irq_state(); }).mask(st2xxx_ireq_mask());
for (int i = 0; i < 6; i++)
{
state_add(ST_PDA + i, string_format("PD%c", 'A' + i).c_str(), m_pdata[i]);
@@ -126,7 +88,7 @@ void st2205u_device::device_start()
state_add(ST_PMCR, "PMCR", m_pmcr);
state_add<u8>(ST_SYS, "SYS", [this]() { return m_sys; }, [this](u8 data) { sys_w(data); }).mask(0xfe);
state_add<u8>(ST_BTEN, "BTEN", [this]() { return m_bten; }, [this](u8 data) { bten_w(data); });
- state_add(ST_BTREQ, "BTREQ", m_btreq);
+ state_add(ST_BTSR, "BTREQ", m_btsr);
state_add(ST_BTC, "BTC", m_btc);
state_add(ST_LSSA, "LSSA", m_lssa);
state_add(ST_LVPW, "LVPW", m_lvpw);
@@ -139,22 +101,39 @@ void st2205u_device::device_reset()
{
st2xxx_device::device_reset();
- mi_st2205u &m = downcast<mi_st2205u &>(*mintf);
- m.irr_enable = false;
- m.irr = 0;
- m.prr = 0;
- m.drr = 0;
+ downcast<mi_st2205u &>(*mintf).brr = 0;
- bten_w(0);
- m_btreq = 0;
m_btc = 0;
m_lvctr = 0;
}
+const char *st2205u_device::st2xxx_irq_name(int i) const
+{
+ switch (i)
+ {
+ case 0: return "PE0/1/2 edge";
+ case 1: return "Timer 0";
+ case 2: return "Timer 1";
+ case 3: return "Timer 2";
+ case 4: return "Timer 3";
+ case 5: return "PA transition";
+ case 6: return "Base timer";
+ case 7: return "LCD buffer";
+ case 8: return "SPI TX empty";
+ case 9: return "SPI RX ready";
+ case 10: return "UART TX";
+ case 11: return "UART RX";
+ case 12: return "USB";
+ case 14: return "PCM";
+ case 15: return "RTC";
+ default: return "Reserved";
+ }
+}
+
u8 st2205u_device::mi_st2205u::pread(u16 adr)
{
- u16 bank = irq_service ? irr : prr;
+ u16 bank = irq_service && irr_enable ? irr : prr;
if (BIT(bank, 15))
return ram[0x4000 | (adr & 0x3fff)];
else
@@ -163,7 +142,7 @@ u8 st2205u_device::mi_st2205u::pread(u16 adr)
u8 st2205u_device::mi_st2205u::preadc(u16 adr)
{
- u16 bank = irq_service ? irr : prr;
+ u16 bank = irq_service && irr_enable ? irr : prr;
if (BIT(bank, 15))
return ram[0x4000 | (adr & 0x3fff)];
else
@@ -172,7 +151,7 @@ u8 st2205u_device::mi_st2205u::preadc(u16 adr)
void st2205u_device::mi_st2205u::pwrite(u16 adr, u8 val)
{
- u16 bank = irq_service ? irr : prr;
+ u16 bank = irq_service && irr_enable ? irr : prr;
if (BIT(bank, 15))
ram[0x4000 | (adr & 0x3fff)] = val;
else
@@ -252,72 +231,6 @@ void st2205u_device::mi_st2205u::write(u16 adr, u8 val)
program->write_byte(adr, val);
}
-u8 st2205u_device::irrl_r()
-{
- return downcast<mi_st2205u &>(*mintf).irr & 0xff;
-}
-
-void st2205u_device::irrl_w(u8 data)
-{
- u16 &irr = downcast<mi_st2205u &>(*mintf).irr;
- irr = data | (irr & 0x8f00);
-}
-
-u8 st2205u_device::irrh_r()
-{
- return downcast<mi_st2205u &>(*mintf).irr >> 8;
-}
-
-void st2205u_device::irrh_w(u8 data)
-{
- u16 &irr = downcast<mi_st2205u &>(*mintf).irr;
- irr = (data & 0x8f) << 8 | (irr & 0x00ff);
-}
-
-u8 st2205u_device::prrl_r()
-{
- return downcast<mi_st2205u &>(*mintf).prr & 0xff;
-}
-
-void st2205u_device::prrl_w(u8 data)
-{
- u16 &prr = downcast<mi_st2205u &>(*mintf).prr;
- prr = data | (prr & 0x8f00);
-}
-
-u8 st2205u_device::prrh_r()
-{
- return downcast<mi_st2205u &>(*mintf).prr >> 8;
-}
-
-void st2205u_device::prrh_w(u8 data)
-{
- u16 &prr = downcast<mi_st2205u &>(*mintf).prr;
- prr = (data & 0x8f) << 8 | (prr & 0x00ff);
-}
-
-u8 st2205u_device::drrl_r()
-{
- return downcast<mi_st2205u &>(*mintf).drr & 0xff;
-}
-
-void st2205u_device::drrl_w(u8 data)
-{
- u16 &drr = downcast<mi_st2205u &>(*mintf).drr;
- drr = data | (drr & 0x8700);
-}
-
-u8 st2205u_device::drrh_r()
-{
- return downcast<mi_st2205u &>(*mintf).drr >> 8;
-}
-
-void st2205u_device::drrh_w(u8 data)
-{
- u16 &drr = downcast<mi_st2205u &>(*mintf).drr;
- drr = (data & 0x87) << 8 | (drr & 0x00ff);
-}
-
u8 st2205u_device::brrl_r()
{
return downcast<mi_st2205u &>(*mintf).brr & 0xff;
@@ -350,61 +263,23 @@ void st2205u_device::pmcr_w(u8 data)
m_pmcr = data;
}
-u8 st2205u_device::sys_r()
+unsigned st2205u_device::st2xxx_bt_divider(int n) const
{
- return m_sys;
-}
+ // 2 Hz
+ if (n == 0)
+ return 16384;
-void st2205u_device::sys_w(u8 data)
-{
- m_sys = data & 0xfe;
- downcast<mi_st2205u &>(*mintf).irr_enable = BIT(data, 1);
-}
+ // 32 Hz, 64 Hz, 128 Hz, 256 Hz, 512 Hz
+ if (n <= 5)
+ return 2048 >> n;
-u8 st2205u_device::bten_r()
-{
- return m_bten;
-}
-
-void st2205u_device::bten_w(u8 data)
-{
- if (BIT(data, 0) && !BIT(m_bten, 0))
- m_base_timer[0]->adjust(attotime::from_hz(2), 0, attotime::from_hz(2));
- else if (!BIT(data, 0) && BIT(m_bten, 0))
- m_base_timer[0]->adjust(attotime::never);
-
- for (int n = 1; n <= 5; n++)
- {
- if (BIT(data, n) && !BIT(m_bten, n))
- m_base_timer[n]->adjust(attotime::from_hz(16 << n), 0, attotime::from_hz(16 << n));
- else if (!BIT(data, n) && BIT(m_bten, n))
- m_base_timer[n]->adjust(attotime::never);
- }
-
- if (BIT(data, 6) && !BIT(m_bten, 6))
- m_base_timer[6]->adjust(attotime::from_hz(2048), 0, attotime::from_hz(2048));
- else if (!BIT(data, 6) && BIT(m_bten, 6))
- m_base_timer[6]->adjust(attotime::never);
-
- if (BIT(data, 7) && !BIT(m_bten, 7))
- {
- attotime period = attotime::from_hz(8192) * (m_btc ? m_btc : 256);
- m_base_timer[7]->adjust(period, 0, period);
- }
- else if (!BIT(data, 7) && BIT(m_bten, 7))
- m_base_timer[7]->adjust(attotime::never);
-
- m_bten = data;
-}
+ // 2048 Hz
+ if (n == 6)
+ return 16;
-u8 st2205u_device::btreq_r()
-{
- return m_btreq;
-}
-
-void st2205u_device::btclr_w(u8 data)
-{
- m_btreq &= ~data;
+ // 8192 Hz / BTC
+ assert(n == 7);
+ return 4 * (m_btc != 0 ? m_btc : 256);
}
u8 st2205u_device::btc_r()
@@ -476,7 +351,7 @@ void st2205u_device::int_map(address_map &map)
map(0x000e, 0x000e).rw(FUNC(st2205u_device::pfc_r), FUNC(st2205u_device::pfc_w));
map(0x000f, 0x000f).rw(FUNC(st2205u_device::pfd_r), FUNC(st2205u_device::pfd_w));
map(0x002a, 0x002a).rw(FUNC(st2205u_device::bten_r), FUNC(st2205u_device::bten_w));
- map(0x002b, 0x002b).rw(FUNC(st2205u_device::btreq_r), FUNC(st2205u_device::btclr_w));
+ map(0x002b, 0x002b).rw(FUNC(st2205u_device::btsr_r), FUNC(st2205u_device::btclr_w));
map(0x002c, 0x002c).rw(FUNC(st2205u_device::btc_r), FUNC(st2205u_device::btc_w));
map(0x0030, 0x0030).rw(FUNC(st2205u_device::irrl_r), FUNC(st2205u_device::irrl_w));
map(0x0031, 0x0031).rw(FUNC(st2205u_device::irrh_r), FUNC(st2205u_device::irrh_w));
@@ -500,6 +375,8 @@ void st2205u_device::int_map(address_map &map)
map(0x004e, 0x004e).rw(FUNC(st2205u_device::pl_r), FUNC(st2205u_device::pl_w));
map(0x004f, 0x004f).rw(FUNC(st2205u_device::pcl_r), FUNC(st2205u_device::pcl_w));
map(0x0057, 0x0057).rw(FUNC(st2205u_device::lvctr_r), FUNC(st2205u_device::lvctr_w));
+ map(0x005a, 0x005a).rw(FUNC(st2205u_device::dmrl_r), FUNC(st2205u_device::dmrl_w));
+ map(0x005b, 0x005b).rw(FUNC(st2205u_device::dmrh_r), FUNC(st2205u_device::dmrh_w));
map(0x0080, 0x1fff).rw(FUNC(st2205u_device::ram_r), FUNC(st2205u_device::ram_w)); // assumed to be shared with banked RAM
map(0x2000, 0x3fff).rw(FUNC(st2205u_device::bmem_r), FUNC(st2205u_device::bmem_w));
map(0x4000, 0x7fff).rw(FUNC(st2205u_device::pmem_r), FUNC(st2205u_device::pmem_w));
diff --git a/src/devices/cpu/m6502/st2205u.h b/src/devices/cpu/m6502/st2205u.h
index 2a04bc67be7..5eafabb9c74 100644
--- a/src/devices/cpu/m6502/st2205u.h
+++ b/src/devices/cpu/m6502/st2205u.h
@@ -17,9 +17,7 @@ class st2205u_device : public st2xxx_device
{
public:
enum {
- ST_BTEN = ST_LYMAX + 1,
- ST_BTREQ,
- ST_BTC,
+ ST_BTC = ST_LYMAX + 1,
ST_BRR,
ST_LVCTR
};
@@ -30,6 +28,12 @@ protected:
virtual void device_start() override;
virtual void device_reset() override;
+ virtual u16 st2xxx_ireq_mask() const override { return 0xdfff; }
+ virtual const char *st2xxx_irq_name(int i) const override;
+ virtual unsigned st2xxx_bt_divider(int n) const override;
+ virtual u8 st2xxx_sys_mask() const override { return 0xfe; }
+ virtual bool st2xxx_has_dma() const override { return true; }
+
private:
class mi_st2205u : public mi_st2xxx {
public:
@@ -49,10 +53,6 @@ private:
u8 breadc(u16 adr);
void bwrite(u16 adr, u8 val);
- bool irr_enable;
- u16 irr;
- u16 prr;
- u16 drr;
u16 brr;
std::unique_ptr<u8[]> ram;
@@ -60,30 +60,12 @@ private:
template<int N> TIMER_CALLBACK_MEMBER(bt_interrupt);
- u8 irrl_r();
- void irrl_w(u8 data);
- u8 irrh_r();
- void irrh_w(u8 data);
- u8 prrl_r();
- void prrl_w(u8 data);
- u8 prrh_r();
- void prrh_w(u8 data);
- u8 drrl_r();
- void drrl_w(u8 data);
- u8 drrh_r();
- void drrh_w(u8 data);
u8 brrl_r();
void brrl_w(u8 data);
u8 brrh_r();
void brrh_w(u8 data);
- u8 sys_r();
- void sys_w(u8 data);
u8 pmcr_r();
void pmcr_w(u8 data);
- u8 bten_r();
- void bten_w(u8 data);
- u8 btreq_r();
- void btclr_w(u8 data);
u8 btc_r();
void btc_w(u8 data);
u8 lvctr_r();
@@ -100,10 +82,7 @@ private:
void int_map(address_map &map);
- u8 m_bten;
- u8 m_btreq;
u8 m_btc;
- emu_timer *m_base_timer[8];
u8 m_lvctr;
};
diff --git a/src/devices/cpu/m6502/st2xxx.cpp b/src/devices/cpu/m6502/st2xxx.cpp
index ce5a91ba619..a7a5a84be8c 100644
--- a/src/devices/cpu/m6502/st2xxx.cpp
+++ b/src/devices/cpu/m6502/st2xxx.cpp
@@ -28,20 +28,34 @@
#include "emu.h"
#include "st2xxx.h"
-st2xxx_device::st2xxx_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, address_map_constructor internal_map, int data_bits, u16 ireq_mask)
+#define LOG_IRQ (1 << 1U)
+#define LOG_BT (1 << 2U)
+//#define VERBOSE (LOG_IRQ | LOG_BT)
+#include "logmacro.h"
+
+st2xxx_device::st2xxx_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, address_map_constructor internal_map, int data_bits, bool has_banked_ram)
: r65c02_device(mconfig, type, tag, owner, clock)
, m_data_config("data", ENDIANNESS_LITTLE, 8, data_bits, 0)
, m_in_port_cb{{*this}, {*this}, {*this}, {*this}, {*this}, {*this}, {*this}}
, m_out_port_cb{{*this}, {*this}, {*this}, {*this}, {*this}, {*this}, {*this}}
+ , m_prr_mask(data_bits <= 14 ? 0 : ((u16(1) << (data_bits - 14)) - 1) | (has_banked_ram ? 0x8000 : 0))
+ , m_drr_mask(data_bits <= 15 ? 0 : ((u16(1) << (data_bits - 15)) - 1) | (has_banked_ram ? 0x8000 : 0))
, m_pdata{0}
, m_pctrl{0}
, m_psel{0}
, m_pfun{0}
, m_pmcr(0)
+ , m_bten(0)
+ , m_btsr(0)
+ , m_bt_mask(0)
+ , m_bt_ireq(0)
+ , m_sys(0)
, m_ireq(0)
, m_iena(0)
- , m_ireq_mask(ireq_mask)
- , m_sys(0)
+ , m_lssa(0)
+ , m_lvpw(0)
+ , m_lxmax(0)
+ , m_lymax(0)
{
program_config.m_internal_map = std::move(internal_map);
}
@@ -62,6 +76,81 @@ void st2xxx_device::device_resolve_objects()
cb.resolve_safe();
}
+TIMER_CALLBACK_MEMBER(st2xxx_device::bt_interrupt)
+{
+ // BTSR must be cleared each time the interrupt is serviced
+ bool interrupt = (m_btsr == 0);
+
+ m_btsr |= 1 << param;
+
+ unsigned div = st2xxx_bt_divider(param);
+ assert(div != 0);
+ m_base_timer[param]->adjust(attotime::from_ticks(32768, div), param);
+
+ if (interrupt)
+ {
+ LOGMASKED(LOG_BT, "Interrupt caused by %.1f Hz base timer\n", 32768.0 / div);
+ m_ireq |= m_bt_ireq;
+ update_irq_state();
+ }
+}
+
+void st2xxx_device::init_base_timer(u16 ireq)
+{
+ m_bt_ireq = ireq;
+
+ for (int n = 0; n < 8; n++)
+ {
+ if (st2xxx_bt_divider(n) != 0)
+ {
+ m_bt_mask |= 1 << n;
+ m_base_timer[n] = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(st2xxx_device::bt_interrupt), this));
+ }
+ }
+
+ assert(m_bt_mask != 0);
+ assert(m_bt_ireq != 0);
+}
+
+void st2xxx_device::save_common_registers()
+{
+ mi_st2xxx *intf = downcast<mi_st2xxx *>(mintf.get());
+
+ save_item(NAME(m_pdata));
+ save_item(NAME(m_pctrl));
+ save_item(NAME(m_psel));
+ save_item(NAME(m_pfun));
+ save_item(NAME(m_pmcr));
+ if (m_prr_mask != 0)
+ {
+ if (BIT(st2xxx_sys_mask(), 1))
+ {
+ save_item(NAME(intf->irq_service));
+ save_item(NAME(intf->irr_enable));
+ save_item(NAME(intf->irr));
+ }
+ save_item(NAME(intf->prr));
+ }
+ if (m_drr_mask != 0)
+ {
+ save_item(NAME(intf->drr));
+ if (st2xxx_has_dma())
+ save_item(NAME(intf->dmr));
+ }
+ if (m_bt_mask != 0)
+ {
+ save_item(NAME(m_bten));
+ save_item(NAME(m_btsr));
+ }
+ save_item(NAME(m_sys));
+ save_item(NAME(m_ireq));
+ save_item(NAME(m_iena));
+ save_item(NAME(m_lssa));
+ save_item(NAME(m_lvpw));
+ save_item(NAME(m_lxmax));
+ save_item(NAME(m_lymax));
+}
+
void st2xxx_device::device_reset()
{
m6502_device::device_reset();
@@ -75,11 +164,23 @@ void st2xxx_device::device_reset()
cb(0xff);
m_pmcr = 0x80;
+ // reset bank registers
+ mi_st2xxx &m = downcast<mi_st2xxx &>(*mintf);
+ m.irr_enable = false;
+ m.irr = 0;
+ m.prr = 0;
+ m.drr = 0;
+ m.dmr = 0;
+
// reset interrupt registers
m_ireq = 0;
m_iena = 0;
update_irq_state();
+ // reset base timer
+ bten_w(0);
+ m_btsr = 0;
+
// reset miscellaneous registers
m_sys = 0;
@@ -93,19 +194,15 @@ void st2xxx_device::device_reset()
u8 st2xxx_device::acknowledge_irq()
{
// IREQH interrupts have priority over IREQL interrupts
- for (int level = 8; level < 16; level++)
- {
- if (BIT(m_ireq & m_iena, level))
- {
- m_ireq &= ~(1 << level);
- update_irq_state();
- return level;
- }
- }
- for (int level = 0; level < 8; level++)
+ for (int pri = 0; pri < 16; pri++)
{
+ int level = pri ^ 8;
if (BIT(m_ireq & m_iena, level))
{
+ LOGMASKED(LOG_IRQ, "%s interrupt acknowledged (PC = $%04X, vector = $%04X)\n",
+ st2xxx_irq_name(level),
+ PPC,
+ 0x7ff8 - (level << 1));
m_ireq &= ~(1 << level);
update_irq_state();
return level;
@@ -207,6 +304,154 @@ void st2xxx_device::pcl_w(u8 data)
pctrl_w(6, data);
}
+u8 st2xxx_device::bten_r()
+{
+ return m_bten;
+}
+
+void st2xxx_device::bten_w(u8 data)
+{
+ data &= m_bt_mask;
+
+ for (int n = 0; n < 8; n++)
+ {
+ if (BIT(data, n) && !BIT(m_bten, n))
+ {
+ unsigned div = st2xxx_bt_divider(n);
+ assert(div != 0);
+ assert(m_base_timer[n] != nullptr);
+ m_base_timer[n]->adjust(attotime::from_ticks(32768, div), n);
+ LOGMASKED(LOG_BT, "Base timer %d enabled at %.1f Hz (PC = $%04X)\n", n, 32768.0 / div, PPC);
+ }
+ else if (!BIT(data, n) && BIT(m_bten, n))
+ {
+ m_base_timer[n]->adjust(attotime::never);
+ LOGMASKED(LOG_BT, "Base timer %d disabled (PC = $%04X)\n", n, PPC);
+ }
+ }
+
+ m_bten = data;
+}
+
+u8 st2xxx_device::btsr_r()
+{
+ return m_btsr;
+}
+
+void st2xxx_device::btclr_w(u8 data)
+{
+ // Write 1 to clear each individual bit
+ m_btsr &= ~data;
+}
+
+void st2xxx_device::btclr_all_w(u8 data)
+{
+ // Only bit 7 has any effect
+ if (BIT(data, 7))
+ m_btsr = 0;
+}
+
+u8 st2xxx_device::sys_r()
+{
+ return m_sys | 0x01;
+}
+
+void st2xxx_device::sys_w(u8 data)
+{
+ u8 mask = st2xxx_sys_mask();
+ m_sys = data & mask;
+ if (BIT(mask, 1))
+ downcast<mi_st2xxx &>(*mintf).irr_enable = BIT(data, 1);
+}
+
+u8 st2xxx_device::irrl_r()
+{
+ return downcast<mi_st2xxx &>(*mintf).irr & 0xff;
+}
+
+void st2xxx_device::irrl_w(u8 data)
+{
+ u16 &irr = downcast<mi_st2xxx &>(*mintf).irr;
+ irr = (data & m_prr_mask) | (irr & 0xff00);
+}
+
+u8 st2xxx_device::irrh_r()
+{
+ return downcast<mi_st2xxx &>(*mintf).irr >> 8;
+}
+
+void st2xxx_device::irrh_w(u8 data)
+{
+ u16 &irr = downcast<mi_st2xxx &>(*mintf).irr;
+ irr = ((u16(data) << 8) & m_prr_mask) | (irr & 0x00ff);
+}
+
+u8 st2xxx_device::prrl_r()
+{
+ return downcast<mi_st2xxx &>(*mintf).prr & 0xff;
+}
+
+void st2xxx_device::prrl_w(u8 data)
+{
+ u16 &prr = downcast<mi_st2xxx &>(*mintf).prr;
+ prr = (data & m_prr_mask) | (prr & 0xff00);
+}
+
+u8 st2xxx_device::prrh_r()
+{
+ return downcast<mi_st2xxx &>(*mintf).prr >> 8;
+}
+
+void st2xxx_device::prrh_w(u8 data)
+{
+ u16 &prr = downcast<mi_st2xxx &>(*mintf).prr;
+ prr = ((u16(data) << 8) & m_prr_mask) | (prr & 0x00ff);
+}
+
+u8 st2xxx_device::drrl_r()
+{
+ return downcast<mi_st2xxx &>(*mintf).drr & 0xff;
+}
+
+void st2xxx_device::drrl_w(u8 data)
+{
+ u16 &drr = downcast<mi_st2xxx &>(*mintf).drr;
+ drr = (data & m_drr_mask) | (drr & 0xff00);
+}
+
+u8 st2xxx_device::drrh_r()
+{
+ return downcast<mi_st2xxx &>(*mintf).drr >> 8;
+}
+
+void st2xxx_device::drrh_w(u8 data)
+{
+ u16 &drr = downcast<mi_st2xxx &>(*mintf).drr;
+ drr = ((u16(data) << 8) & m_drr_mask) | (drr & 0x00ff);
+}
+
+u8 st2xxx_device::dmrl_r()
+{
+ return downcast<mi_st2xxx &>(*mintf).dmr & 0xff;
+}
+
+void st2xxx_device::dmrl_w(u8 data)
+{
+ u16 &dmr = downcast<mi_st2xxx &>(*mintf).dmr;
+ dmr = (data & m_drr_mask) | (dmr & 0xff00);
+}
+
+u8 st2xxx_device::dmrh_r()
+{
+ return downcast<mi_st2xxx &>(*mintf).dmr >> 8;
+}
+
+void st2xxx_device::dmrh_w(u8 data)
+{
+ u16 &dmr = downcast<mi_st2xxx &>(*mintf).dmr;
+ dmr = ((u16(data) << 8) & m_drr_mask) | (dmr & 0x00ff);
+}
+
u8 st2xxx_device::ireql_r()
{
return m_ireq & 0x00ff;
@@ -216,6 +461,11 @@ void st2xxx_device::ireql_w(u8 data)
{
if ((m_ireq & ~data & 0x00ff) != 0)
{
+ for (int i = 0; i < 8; i++)
+ {
+ if (!BIT(data, i) && BIT(m_ireq, i))
+ LOGMASKED(LOG_IRQ, "%s interrupt cleared (PC = $%04X)\n", st2xxx_irq_name(i), PPC);
+ }
m_ireq &= data | 0xff00;
update_irq_state();
}
@@ -230,6 +480,11 @@ void st2xxx_device::ireqh_w(u8 data)
{
if ((m_ireq & ~(u16(data) << 8) & 0xff00) != 0)
{
+ for (int i = 0; i < 8; i++)
+ {
+ if (!BIT(data, i) && BIT(m_ireq, i + 8))
+ LOGMASKED(LOG_IRQ, "%s interrupt cleared (PC = $%04X)\n", st2xxx_irq_name(i + 8), PPC);
+ }
m_ireq &= u16(data) << 8 | 0x00ff;
update_irq_state();
}
@@ -242,8 +497,20 @@ u8 st2xxx_device::ienal_r()
void st2xxx_device::ienal_w(u8 data)
{
- m_iena = (m_iena & 0xff00) | (data & m_ireq_mask);
- update_irq_state();
+ data &= st2xxx_ireq_mask();
+ if (data != (m_iena & 0x00ff))
+ {
+ for (int i = 0; i < 8; i++)
+ {
+ if (BIT(data, i) != BIT(m_iena, i))
+ LOGMASKED(LOG_IRQ, "%s interrupt %sabled (PC = $%04X)\n",
+ st2xxx_irq_name(i),
+ BIT(data, i) ? "en" : "dis",
+ PPC);
+ }
+ m_iena = (m_iena & 0xff00) | data;
+ update_irq_state();
+ }
}
u8 st2xxx_device::ienah_r()
@@ -253,8 +520,20 @@ u8 st2xxx_device::ienah_r()
void st2xxx_device::ienah_w(u8 data)
{
- m_iena = (m_iena & 0x00ff) | ((u16(data) << 8) & m_ireq_mask);
- update_irq_state();
+ data &= st2xxx_ireq_mask() >> 8;
+ if (data != (m_iena >> 8))
+ {
+ for (int i = 0; i < 8; i++)
+ {
+ if (BIT(data, i) != BIT(m_iena, i + 8))
+ LOGMASKED(LOG_IRQ, "%s interrupt %sabled (PC = $%04X)\n",
+ st2xxx_irq_name(i + 8),
+ BIT(data, i) ? "en" : "dis",
+ PPC);
+ }
+ m_iena = (m_iena & 0x00ff) | (u16(data) << 8);
+ update_irq_state();
+ }
}
void st2xxx_device::lssal_w(u8 data)
diff --git a/src/devices/cpu/m6502/st2xxx.h b/src/devices/cpu/m6502/st2xxx.h
index f35b5e540b3..ad31e73be77 100644
--- a/src/devices/cpu/m6502/st2xxx.h
+++ b/src/devices/cpu/m6502/st2xxx.h
@@ -32,10 +32,13 @@ public:
ST_PFC,
ST_PFD,
ST_PMCR,
+ ST_BTEN,
+ ST_BTSR,
ST_SYS,
ST_IRR,
ST_PRR,
ST_DRR,
+ ST_DMR,
ST_IREQ,
ST_IENA,
ST_LSSA,
@@ -60,7 +63,7 @@ public:
auto out_pl_callback() { return m_out_port_cb[6].bind(); }
protected:
- st2xxx_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, address_map_constructor internal_map, int data_bits, u16 ireq_mask);
+ st2xxx_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock, address_map_constructor internal_map, int data_bits, bool has_banked_ram);
virtual space_config_vector memory_space_config() const override;
virtual void device_resolve_objects() override;
@@ -69,21 +72,38 @@ protected:
virtual void do_exec_full() override;
virtual void do_exec_partial() override;
+ virtual u16 st2xxx_ireq_mask() const = 0;
+ virtual const char *st2xxx_irq_name(int i) const = 0;
+ virtual unsigned st2xxx_bt_divider(int n) const = 0;
+ virtual u8 st2xxx_sys_mask() const = 0;
+ virtual bool st2xxx_has_dma() const { return false; }
+
class mi_st2xxx : public memory_interface {
public:
virtual u8 read_vector(u16 adr) = 0;
address_space *data;
memory_access_cache<0, 0, ENDIANNESS_LITTLE> *dcache;
+
bool irq_service;
+ bool irr_enable;
+ u16 irr;
+ u16 prr;
+ u16 drr;
+ u16 dmr;
};
+ void init_base_timer(u16 ireq);
+ void save_common_registers();
+
u8 read_vector(u16 adr) { return downcast<mi_st2xxx &>(*mintf).read_vector(adr); }
void set_irq_service(bool state) { downcast<mi_st2xxx &>(*mintf).irq_service = state; }
void update_irq_state() { irq_state = (m_ireq & m_iena) != 0; }
u8 acknowledge_irq();
+ TIMER_CALLBACK_MEMBER(bt_interrupt);
+
u8 pdata_r(offs_t offset);
void pdata_w(offs_t offset, u8 data);
u8 pctrl_r(offs_t offset);
@@ -101,6 +121,32 @@ protected:
u8 pfd_r();
void pfd_w(u8 data);
+ u8 sys_r();
+ void sys_w(u8 data);
+
+ u8 irrl_r();
+ void irrl_w(u8 data);
+ u8 irrh_r();
+ void irrh_w(u8 data);
+ u8 prrl_r();
+ void prrl_w(u8 data);
+ u8 prrh_r();
+ void prrh_w(u8 data);
+ u8 drrl_r();
+ void drrl_w(u8 data);
+ u8 drrh_r();
+ void drrh_w(u8 data);
+ u8 dmrl_r();
+ void dmrl_w(u8 data);
+ u8 dmrh_r();
+ void dmrh_w(u8 data);
+
+ u8 bten_r();
+ void bten_w(u8 data);
+ u8 btsr_r();
+ void btclr_w(u8 data);
+ void btclr_all_w(u8 data);
+
u8 ireql_r();
void ireql_w(u8 data);
u8 ireqh_r();
@@ -131,15 +177,22 @@ protected:
devcb_read8 m_in_port_cb[7];
devcb_write8 m_out_port_cb[7];
+ const u16 m_prr_mask;
+ const u16 m_drr_mask;
+
u8 m_pdata[7];
u8 m_pctrl[7];
u8 m_psel[7];
u8 m_pfun[2];
u8 m_pmcr;
+ u8 m_bten;
+ u8 m_btsr;
+ emu_timer *m_base_timer[8];
+ u8 m_bt_mask;
+ u16 m_bt_ireq;
+ u8 m_sys;
u16 m_ireq;
u16 m_iena;
- const u16 m_ireq_mask;
- u8 m_sys;
u16 m_lssa;
u8 m_lvpw;
u8 m_lxmax;