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mmd2.cpp: that was a lot of run-time tag map lookups... (nw)

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This commit is contained in:
Vas Crabb 2019-12-06 16:15:57 +11:00
parent 83123f2334
commit 58a2d5859a
1 changed files with 88 additions and 78 deletions
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164
src/mame/drivers/mmd2.cpp
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@ -5,7 +5,7 @@
MMD-2 driver by Miodrag Milanovic MMD-2 driver by Miodrag Milanovic
2009-05-12 Initial version 2009-05-12 Initial version
2011-01-12 MMD2 working {Robbbert] 2011-01-12 MMD2 working [Robbbert]
http://www.cs.unc.edu/~yakowenk/classiccmp/mmd2/ http://www.cs.unc.edu/~yakowenk/classiccmp/mmd2/
@ -106,8 +106,14 @@ public:
: driver_device(mconfig, type, tag) : driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu") , m_maincpu(*this, "maincpu")
, m_cass(*this, "cassette") , m_cass(*this, "cassette")
, m_banks(*this, "bank%u", 1U)
, m_io_keyboard(*this, "X%u", 0) , m_io_keyboard(*this, "X%u", 0)
, m_io_dsw(*this, "DSW")
, m_digits(*this, "digit%u", 0U) , m_digits(*this, "digit%u", 0U)
, m_p(*this, "p%u_%u", 0U, 0U)
, m_led_halt(*this, "led_halt")
, m_led_hold(*this, "led_hold")
, m_led_inte(*this, "led_inte")
{ } { }
void mmd2(machine_config &config); void mmd2(machine_config &config);
@ -116,6 +122,10 @@ public:
DECLARE_INPUT_CHANGED_MEMBER(reset_button); DECLARE_INPUT_CHANGED_MEMBER(reset_button);
protected:
virtual void machine_start() override;
virtual void machine_reset() override;
private: private:
DECLARE_WRITE8_MEMBER(port00_w); DECLARE_WRITE8_MEMBER(port00_w);
DECLARE_WRITE8_MEMBER(port01_w); DECLARE_WRITE8_MEMBER(port01_w);
@ -133,51 +143,56 @@ private:
DECLARE_WRITE_LINE_MEMBER(so); DECLARE_WRITE_LINE_MEMBER(so);
void io_map(address_map &map); void io_map(address_map &map);
void mem_map(address_map &map); void mem_map(address_map &map);
virtual void machine_reset() override;
void reset_banks(); void reset_banks();
uint8_t m_digit; uint8_t m_digit;
virtual void machine_start() override { m_digits.resolve(); }
required_device<i8080_cpu_device> m_maincpu; required_device<i8080_cpu_device> m_maincpu;
required_device<cassette_image_device> m_cass; required_device<cassette_image_device> m_cass;
required_memory_bank_array<8> m_banks;
required_ioport_array<4> m_io_keyboard; required_ioport_array<4> m_io_keyboard;
required_ioport m_io_dsw;
output_finder<9> m_digits; output_finder<9> m_digits;
output_finder<3, 8> m_p;
output_finder<> m_led_halt;
output_finder<> m_led_hold;
output_finder<> m_led_inte;
}; };
WRITE8_MEMBER( mmd2_state::port00_w ) WRITE8_MEMBER( mmd2_state::port00_w )
{ {
output().set_value("p0_7", BIT(data,7) ? 0 : 1); m_p[0][7] = BIT(data,7) ? 0 : 1;
output().set_value("p0_6", BIT(data,6) ? 0 : 1); m_p[0][6] = BIT(data,6) ? 0 : 1;
output().set_value("p0_5", BIT(data,5) ? 0 : 1); m_p[0][5] = BIT(data,5) ? 0 : 1;
output().set_value("p0_4", BIT(data,4) ? 0 : 1); m_p[0][4] = BIT(data,4) ? 0 : 1;
output().set_value("p0_3", BIT(data,3) ? 0 : 1); m_p[0][3] = BIT(data,3) ? 0 : 1;
output().set_value("p0_2", BIT(data,2) ? 0 : 1); m_p[0][2] = BIT(data,2) ? 0 : 1;
output().set_value("p0_1", BIT(data,1) ? 0 : 1); m_p[0][1] = BIT(data,1) ? 0 : 1;
output().set_value("p0_0", BIT(data,0) ? 0 : 1); m_p[0][0] = BIT(data,0) ? 0 : 1;
} }
WRITE8_MEMBER( mmd2_state::port01_w ) WRITE8_MEMBER( mmd2_state::port01_w )
{ {
output().set_value("p1_7", BIT(data,7) ? 0 : 1); m_p[1][7] = BIT(data,7) ? 0 : 1;
output().set_value("p1_6", BIT(data,6) ? 0 : 1); m_p[1][6] = BIT(data,6) ? 0 : 1;
output().set_value("p1_5", BIT(data,5) ? 0 : 1); m_p[1][5] = BIT(data,5) ? 0 : 1;
output().set_value("p1_4", BIT(data,4) ? 0 : 1); m_p[1][4] = BIT(data,4) ? 0 : 1;
output().set_value("p1_3", BIT(data,3) ? 0 : 1); m_p[1][3] = BIT(data,3) ? 0 : 1;
output().set_value("p1_2", BIT(data,2) ? 0 : 1); m_p[1][2] = BIT(data,2) ? 0 : 1;
output().set_value("p1_1", BIT(data,1) ? 0 : 1); m_p[1][1] = BIT(data,1) ? 0 : 1;
output().set_value("p1_0", BIT(data,0) ? 0 : 1); m_p[1][0] = BIT(data,0) ? 0 : 1;
} }
WRITE8_MEMBER( mmd2_state::port02_w ) WRITE8_MEMBER( mmd2_state::port02_w )
{ {
output().set_value("p2_7", BIT(data,7) ? 0 : 1); m_p[2][7] = BIT(data,7) ? 0 : 1;
output().set_value("p2_6", BIT(data,6) ? 0 : 1); m_p[2][6] = BIT(data,6) ? 0 : 1;
output().set_value("p2_5", BIT(data,5) ? 0 : 1); m_p[2][5] = BIT(data,5) ? 0 : 1;
output().set_value("p2_4", BIT(data,4) ? 0 : 1); m_p[2][4] = BIT(data,4) ? 0 : 1;
output().set_value("p2_3", BIT(data,3) ? 0 : 1); m_p[2][3] = BIT(data,3) ? 0 : 1;
output().set_value("p2_2", BIT(data,2) ? 0 : 1); m_p[2][2] = BIT(data,2) ? 0 : 1;
output().set_value("p2_1", BIT(data,1) ? 0 : 1); m_p[2][1] = BIT(data,1) ? 0 : 1;
output().set_value("p2_0", BIT(data,0) ? 0 : 1); m_p[2][0] = BIT(data,0) ? 0 : 1;
} }
void mmd2_state::mem_map(address_map &map) void mmd2_state::mem_map(address_map &map)
@ -276,22 +291,16 @@ C D E F MEM REGS AUX CANCEL
READ8_MEMBER( mmd2_state::bank_r ) READ8_MEMBER( mmd2_state::bank_r )
{ {
membank("bank1")->set_entry(offset); for (auto &bank : m_banks)
membank("bank2")->set_entry(offset); bank->set_entry(offset);
membank("bank3")->set_entry(offset); return space.unmap();
membank("bank4")->set_entry(offset);
membank("bank5")->set_entry(offset);
membank("bank6")->set_entry(offset);
membank("bank7")->set_entry(offset);
membank("bank8")->set_entry(offset);
return 0xff;
} }
READ8_MEMBER( mmd2_state::port01_r ) READ8_MEMBER( mmd2_state::port01_r )
{ {
// need to add ttyin bit 0 // need to add ttyin bit 0
uint8_t data = 0x84; uint8_t data = 0x84;
data |= ioport("DSW")->read(); data |= m_io_dsw->read();
data |= (m_cass->input() < 0.02) ? 0 : 2; data |= (m_cass->input() < 0.02) ? 0 : 2;
return data; return data;
} }
@ -326,16 +335,25 @@ READ8_MEMBER( mmd2_state::keyboard_r )
WRITE8_MEMBER( mmd2_state::status_callback ) WRITE8_MEMBER( mmd2_state::status_callback )
{ {
// operate the HALT LED // operate the HALT LED
output().set_value("led_halt", ~data & i8080_cpu_device::STATUS_HLTA); m_led_halt = ~data & i8080_cpu_device::STATUS_HLTA;
// operate the HOLD LED - this should connect to the HLDA pin, // operate the HOLD LED - this should connect to the HLDA pin,
// but it isn't emulated, using WO instead (whatever that does). // but it isn't emulated, using WO instead (whatever that does).
output().set_value("led_hold", data & i8080_cpu_device::STATUS_WO); m_led_hold = data & i8080_cpu_device::STATUS_WO;
} }
WRITE_LINE_MEMBER( mmd2_state::inte_callback ) WRITE_LINE_MEMBER( mmd2_state::inte_callback )
{ {
// operate the INTE LED // operate the INTE LED
output().set_value("led_inte", state); m_led_inte = state;
}
void mmd2_state::machine_start()
{
m_digits.resolve();
m_p.resolve();
m_led_halt.resolve();
m_led_hold.resolve();
m_led_inte.resolve();
} }
void mmd2_state::machine_reset() void mmd2_state::machine_reset()
@ -345,47 +363,39 @@ void mmd2_state::machine_reset()
void mmd2_state::reset_banks() void mmd2_state::reset_banks()
{ {
membank("bank1")->set_entry(0); for (auto &bank : m_banks)
membank("bank2")->set_entry(0); bank->set_entry(0);
membank("bank3")->set_entry(0);
membank("bank4")->set_entry(0);
membank("bank5")->set_entry(0);
membank("bank6")->set_entry(0);
membank("bank7")->set_entry(0);
membank("bank8")->set_entry(0);
} }
void mmd2_state::init_mmd2() void mmd2_state::init_mmd2()
{ {
/* // We preset all banks here, so that bankswitching will incur no speed penalty.
We preset all banks here, so that bankswitching will incur no speed penalty. // 0000/0400 indicate ROMs, D800/DC00/E400 indicate RAM, 8000 is a dummy write area for ROM banks.
0000/0400 indicate ROMs, D800/DC00/E400 indicate RAM, 8000 is a dummy write area for ROM banks. uint8_t *const p_ram = memregion("maincpu")->base();
*/ m_banks[0]->configure_entry(0, &p_ram[0x0000]);
uint8_t *p_ram = memregion("maincpu")->base(); m_banks[0]->configure_entry(1, &p_ram[0xd800]);
membank("bank1")->configure_entry(0, &p_ram[0x0000]); m_banks[0]->configure_entry(2, &p_ram[0x0c00]);
membank("bank1")->configure_entry(1, &p_ram[0xd800]); m_banks[1]->configure_entry(0, &p_ram[0x8000]);
membank("bank1")->configure_entry(2, &p_ram[0x0c00]); m_banks[1]->configure_entry(1, &p_ram[0xd800]);
membank("bank2")->configure_entry(0, &p_ram[0x8000]); m_banks[1]->configure_entry(2, &p_ram[0x8000]);
membank("bank2")->configure_entry(1, &p_ram[0xd800]); m_banks[2]->configure_entry(0, &p_ram[0x0400]);
membank("bank2")->configure_entry(2, &p_ram[0x8000]); m_banks[2]->configure_entry(1, &p_ram[0xdc00]);
membank("bank3")->configure_entry(0, &p_ram[0x0400]); m_banks[2]->configure_entry(2, &p_ram[0xdc00]);
membank("bank3")->configure_entry(1, &p_ram[0xdc00]); m_banks[3]->configure_entry(0, &p_ram[0x8000]);
membank("bank3")->configure_entry(2, &p_ram[0xdc00]); m_banks[3]->configure_entry(1, &p_ram[0xdc00]);
membank("bank4")->configure_entry(0, &p_ram[0x8000]); m_banks[3]->configure_entry(2, &p_ram[0xdc00]);
membank("bank4")->configure_entry(1, &p_ram[0xdc00]); m_banks[4]->configure_entry(0, &p_ram[0xd800]);
membank("bank4")->configure_entry(2, &p_ram[0xdc00]); m_banks[4]->configure_entry(1, &p_ram[0x0000]);
membank("bank5")->configure_entry(0, &p_ram[0xd800]); m_banks[4]->configure_entry(2, &p_ram[0x0000]);
membank("bank5")->configure_entry(1, &p_ram[0x0000]); m_banks[5]->configure_entry(0, &p_ram[0xd800]);
membank("bank5")->configure_entry(2, &p_ram[0x0000]); m_banks[5]->configure_entry(1, &p_ram[0x8000]);
membank("bank6")->configure_entry(0, &p_ram[0xd800]); m_banks[5]->configure_entry(2, &p_ram[0x8000]);
membank("bank6")->configure_entry(1, &p_ram[0x8000]); m_banks[6]->configure_entry(0, &p_ram[0xe400]);
membank("bank6")->configure_entry(2, &p_ram[0x8000]); m_banks[6]->configure_entry(1, &p_ram[0x0c00]);
membank("bank7")->configure_entry(0, &p_ram[0xe400]); m_banks[6]->configure_entry(2, &p_ram[0xd800]);
membank("bank7")->configure_entry(1, &p_ram[0x0c00]); m_banks[7]->configure_entry(0, &p_ram[0xe400]);
membank("bank7")->configure_entry(2, &p_ram[0xd800]); m_banks[7]->configure_entry(1, &p_ram[0x8000]);
membank("bank8")->configure_entry(0, &p_ram[0xe400]); m_banks[7]->configure_entry(2, &p_ram[0xd800]);
membank("bank8")->configure_entry(1, &p_ram[0x8000]);
membank("bank8")->configure_entry(2, &p_ram[0xd800]);
} }
void mmd2_state::mmd2(machine_config &config) void mmd2_state::mmd2(machine_config &config)