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cothello: add coin handling and sound
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@ -65,7 +65,7 @@ void beep_device::sound_stream_update(sound_stream &stream, std::vector<read_str
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clock = m_frequency;
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/* if we're not enabled, just fill with 0 */
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if ( !m_enable || clock == 0 )
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if (!m_enable || clock == 0)
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{
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buffer.fill(0);
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return;
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@ -57,10 +57,11 @@
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emulates an unmodified PCB, you can enable the hacks in the DRIVER
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CONFIGURATION menu.
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B&W cabinet versions also exist.
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Versions of Tomahawk using the Astro Fighter PROM have been seen,
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see notes in ROM loading.
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****************************************************************************/
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@ -12,27 +12,32 @@ and is presumed to be on the same base hardware as the arcade version.
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Hardware notes:
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- PCB label: COG CPU
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- M58710S (8080A), ?MHz XTAL
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- M58710S (8080A), 3.579545MHz XTAL
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- 3*1KB M58732S 2708 ROM, 4th socket is empty
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- 256 bytes RAM (2*M58722P 2111A), 0.5KB DRAM (M58755S)
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- M58741P Color TV Interface, 64*64 1bpp video
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- 7seg time counter (not software controlled)
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- beeper
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TODO:
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- verify XTAL
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- verify video timing
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- coin
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- sound
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- is there a button select, or is current input emulation correct where for
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example P1 can move P2 cursor? (the only unique P2 button is the Set button)
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- unknown if the screen is color or B&W + overlay, but since the video chip is
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meant for a color tv, let's assume the green tint is from the screen itself
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- beeper duration and base frequency is approximated (divisor is correct)
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- CPU speed is wrong, it's likely running at 1.79MHz. But that's way too fast
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compared to videos of the game. 0.9MHz(XTAL/4) is also too fast. It's probably
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due to the M58741P HOLD pin halting the 8080, which is not emulated.
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- Is there a button select somewhere? I really can't find any. Or is current
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input emulation correct where for example P1 can move P2 cursor? (the only
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unique P2 button is the Set button)
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- It's not known if the screen is color or B&W + overlay, but since the video
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chip is meant for a color tv, let's assume the green tint is from the screen
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itself. Photos of the home version also show a green tint.
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*******************************************************************************/
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#include "emu.h"
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#include "cpu/i8085/i8085.h"
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#include "sound/beep.h"
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#include "screen.h"
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#include "speaker.h"
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@ -50,26 +55,52 @@ public:
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m_maincpu(*this, "maincpu"),
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m_screen(*this, "screen"),
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m_vram(*this, "vram"),
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m_inputs(*this, "IN.%u", 0)
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m_beeper(*this, "beeper"),
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m_inputs(*this, "IN.%u", 0),
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m_digits(*this, "digit%u", 0U)
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{ }
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void cothello(machine_config &config);
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DECLARE_INPUT_CHANGED_MEMBER(insert_coin);
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protected:
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virtual void machine_start() override;
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private:
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required_device<cpu_device> m_maincpu;
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required_device<screen_device> m_screen;
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required_shared_ptr<u8> m_vram;
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required_ioport_array<3> m_inputs;
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required_device<beep_device> m_beeper;
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required_ioport_array<4> m_inputs;
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output_finder<4> m_digits;
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void main_map(address_map &map);
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u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
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u8 input_r();
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u8 coin_r();
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u8 input_r();
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void sound_w(u8 data);
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TIMER_CALLBACK_MEMBER(counter_tick);
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TIMER_CALLBACK_MEMBER(beeper_off) { m_beeper->set_state(0); }
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u16 m_counter = 0;
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emu_timer *m_counter_timer;
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emu_timer *m_beeper_off;
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};
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void cothello_state::machine_start()
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{
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m_digits.resolve();
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m_counter_timer = timer_alloc(FUNC(cothello_state::counter_tick), this);
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m_beeper_off = timer_alloc(FUNC(cothello_state::beeper_off), this);
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save_item(NAME(m_counter));
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}
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/*******************************************************************************
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@ -96,6 +127,46 @@ u32 cothello_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, c
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I/O
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*******************************************************************************/
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INPUT_CHANGED_MEMBER(cothello_state::insert_coin)
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{
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if (!newval || m_counter_timer->enabled())
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return;
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// reset counter
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m_counter = ~0;
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m_counter_timer->adjust(attotime::zero);
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}
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TIMER_CALLBACK_MEMBER(cothello_state::counter_tick)
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{
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m_counter++;
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// highest digit is compared to a digit wheel setting
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u8 max = std::clamp(int(m_inputs[3]->read()), 1, 9);
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u8 high = (m_counter / 100) % 10;
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if (high == 0 || high == max)
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m_maincpu->set_input_line(0, HOLD_LINE);
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if (high != max)
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m_counter_timer->adjust(attotime::from_seconds(1));
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// output counter to 7segs
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static const u8 led_map[] = { 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f };
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m_digits[0] = led_map[m_counter % 10];
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m_digits[1] = led_map[(m_counter / 10) % 10];
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m_digits[2] = led_map[high];
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}
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u8 cothello_state::coin_r()
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{
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// d0-d2: coin status
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// d3: ?
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// d4-d7: unused
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return m_counter_timer->enabled() ? 0xfb : 0xff;
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}
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u8 cothello_state::input_r()
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{
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u8 data = 0xff;
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@ -106,14 +177,22 @@ u8 cothello_state::input_r()
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return data;
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}
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u8 cothello_state::coin_r()
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{
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return 0xfb;
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}
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void cothello_state::sound_w(u8 data)
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{
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//printf("%X ",data);
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if (data & 0x80)
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{
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// d3: beeper start
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if (data & 8)
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{
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m_beeper->set_state(1);
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m_beeper_off->adjust(attotime::from_msec(80));
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}
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// d0-d2: beeper frequency
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u8 freq = (data & 0x7) + 1;
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const u32 base = 3500;
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m_beeper->set_clock(base / freq);
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}
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}
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@ -164,6 +243,21 @@ static INPUT_PORTS_START( cothello )
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PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL PORT_NAME("P2 Pass")
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PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL PORT_NAME("P2 Set")
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PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
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PORT_START("IN.3")
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PORT_CONFNAME( 0x0f, 0x05, "Time" )
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PORT_DIPSETTING( 0x01, "100 seconds" )
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PORT_DIPSETTING( 0x02, "200 seconds" )
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PORT_DIPSETTING( 0x03, "300 seconds" )
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PORT_DIPSETTING( 0x04, "400 seconds" )
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PORT_DIPSETTING( 0x05, "500 seconds" )
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PORT_DIPSETTING( 0x06, "600 seconds" )
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PORT_DIPSETTING( 0x07, "700 seconds" )
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PORT_DIPSETTING( 0x08, "800 seconds" )
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PORT_DIPSETTING( 0x09, "900 seconds" )
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PORT_START("COIN")
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PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_CHANGED_MEMBER(DEVICE_SELF, cothello_state, insert_coin, 0)
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INPUT_PORTS_END
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@ -176,7 +270,6 @@ void cothello_state::cothello(machine_config &config)
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{
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// basic machine hardware
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I8080A(config, m_maincpu, 750000);
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m_maincpu->set_vblank_int("screen", FUNC(cothello_state::irq0_line_hold));
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m_maincpu->set_addrmap(AS_PROGRAM, &cothello_state::main_map);
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// video hardware
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@ -188,6 +281,8 @@ void cothello_state::cothello(machine_config &config)
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m_screen->set_screen_update(FUNC(cothello_state::screen_update));
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// sound hardware
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SPEAKER(config, "mono").front_center();
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BEEP(config, m_beeper, 0).add_route(ALL_OUTPUTS, "mono", 0.25);
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}
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@ -212,4 +307,4 @@ ROM_END
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******************************************************************************/
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// YEAR NAME PARENT MACHINE INPUT CLASS INIT SCREEN COMPANY, FULLNAME, FLAGS
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GAMEL(1978, cothello, 0, cothello, cothello, cothello_state, empty_init, ROT0, "Nintendo", "Computer Othello", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING | MACHINE_NO_SOUND, layout_cothello )
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GAMEL(1978, cothello, 0, cothello, cothello, cothello_state, empty_init, ROT0, "Nintendo", "Computer Othello", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING | MACHINE_IMPERFECT_SOUND, layout_cothello )
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