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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| // license:BSD-3-Clause | ||
| // copyright-holders:Vas Crabb | ||
| #include "emu.h" | ||
| #include "snesmax.h" | ||
|
|
||
| #include "bus/snes_ctrl/ctrl.h" | ||
|
|
||
| namespace { | ||
|
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| class a2bus_snes_max_device : public device_t, public device_a2bus_card_interface | ||
| { | ||
| public: | ||
| a2bus_snes_max_device( | ||
| machine_config const &mconfig, | ||
| char const *tag, | ||
| device_t *owner, | ||
| u32 clock) : | ||
| device_t(mconfig, A2BUS_SNES_MAX, tag, owner, clock), | ||
| device_a2bus_card_interface(mconfig, *this), | ||
| m_controllers(*this, "%u", 1U), | ||
| m_latch_timer(nullptr), | ||
| m_data(0xff) | ||
| { | ||
| } | ||
|
|
||
| virtual u8 read_c0nx(u8 offset) override | ||
| { | ||
| return m_data; | ||
| } | ||
|
|
||
| virtual void write_c0nx(u8 offset, u8 data) override | ||
| { | ||
| if (BIT(offset, 0)) | ||
| { | ||
| m_data = | ||
| (m_controllers[0]->read_pin4() ? 0x00 : 0x80) | | ||
| (m_controllers[1]->read_pin4() ? 0x00 : 0x40) | | ||
| 0x3f; | ||
| } | ||
| else | ||
| { | ||
| machine().scheduler().synchronize(timer_expired_delegate(FUNC(a2bus_snes_max_device::set_latch), this), 0); | ||
| } | ||
| } | ||
|
|
||
| virtual bool take_c800() override | ||
| { | ||
| return false; | ||
| } | ||
|
|
||
| protected: | ||
| virtual void device_add_mconfig(machine_config &config) override ATTR_COLD | ||
| { | ||
| SNES_CONTROL_PORT(config, m_controllers[0], snes_control_port_devices, "joypad"); | ||
| SNES_CONTROL_PORT(config, m_controllers[1], snes_control_port_devices, "joypad"); | ||
| } | ||
|
|
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| virtual void device_start() override ATTR_COLD | ||
| { | ||
| m_latch_timer = timer_alloc(FUNC(a2bus_snes_max_device::reset_latch), this); | ||
|
|
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| m_data = 0xff; | ||
|
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| save_item(NAME(m_data)); | ||
|
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| m_controllers[0]->write_strobe(0); | ||
| m_controllers[1]->write_strobe(0); | ||
| } | ||
|
|
||
| private: | ||
| TIMER_CALLBACK_MEMBER(set_latch) | ||
| { | ||
| m_controllers[0]->write_strobe(1); | ||
| m_controllers[1]->write_strobe(1); | ||
| m_latch_timer->adjust(attotime::from_ticks(7, clock())); | ||
| } | ||
|
|
||
| TIMER_CALLBACK_MEMBER(reset_latch) | ||
| { | ||
| m_controllers[0]->write_strobe(0); | ||
| m_controllers[1]->write_strobe(0); | ||
|
|
||
| m_data = | ||
| (m_controllers[0]->read_pin4() ? 0x00 : 0x80) | | ||
| (m_controllers[1]->read_pin4() ? 0x00 : 0x40) | | ||
| 0x3f; | ||
| } | ||
|
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| required_device_array<snes_control_port_device, 2> m_controllers; | ||
| emu_timer *m_latch_timer; | ||
| u8 m_data; | ||
| }; | ||
|
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| } // anonymous namespace | ||
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| DEFINE_DEVICE_TYPE_PRIVATE(A2BUS_SNES_MAX, device_a2bus_card_interface, a2bus_snes_max_device, "a2snesmax", "SNES MAX Game Controller Interface") |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| // license:BSD-3-Clause | ||
| // copyright-holders:Vas Crabb | ||
| /*********************************************************************** | ||
| Homebrew dual SNES controller interface by Lukazi | ||
| https://lukazi.blogspot.com/2021/06/game-controller-snes-max-snes.html | ||
| ***********************************************************************/ | ||
| #ifndef MAME_BUS_A2BUS_SNESMAX_H | ||
| #define MAME_BUS_A2BUS_SNESMAX_H | ||
|
|
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| #pragma once | ||
|
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| #include "a2bus.h" | ||
|
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|
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| DECLARE_DEVICE_TYPE(A2BUS_SNES_MAX, device_a2bus_card_interface) | ||
|
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| #endif // MAME_BUS_A2BUS_SNESMAX_H |
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