diff options
Diffstat (limited to 'src/devices/bus/msx/cart/msx_audio_kb.h')
-rw-r--r-- | src/devices/bus/msx/cart/msx_audio_kb.h | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/devices/bus/msx/cart/msx_audio_kb.h b/src/devices/bus/msx/cart/msx_audio_kb.h new file mode 100644 index 00000000000..13cf19fb70a --- /dev/null +++ b/src/devices/bus/msx/cart/msx_audio_kb.h @@ -0,0 +1,51 @@ +// license:BSD-3-Clause +// copyright-holders:Wilbert Pol +#ifndef MAME_BUS_MSX_CART_MSX_AUDIO_KB_H +#define MAME_BUS_MSX_CART_MSX_AUDIO_KB_H + +#pragma once + +DECLARE_DEVICE_TYPE(MSX_AUDIO_KBDC_PORT, msx_audio_kbdc_port_device) + +class msx_audio_kb_port_interface : public device_interface +{ +public: + virtual uint8_t read() { return 0xff; } + virtual void write(uint8_t data) { } + +protected: + // construction/destruction + msx_audio_kb_port_interface(machine_config const &mconfig, device_t &device); +}; + + +class msx_audio_kbdc_port_device : public device_t, public device_single_card_slot_interface<msx_audio_kb_port_interface> +{ +public: + // construction/destruction + template <typename T> + msx_audio_kbdc_port_device(machine_config const &mconfig, char const *tag, device_t *owner, T &&opts, char const *dflt) + : msx_audio_kbdc_port_device(mconfig, tag, owner, u32(0)) + { + option_reset(); + opts(*this); + set_default_option(dflt); + set_fixed(false); + } + msx_audio_kbdc_port_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock); + + // Physical connection simply consists of 8 input and 8 output lines split across 2 connectors + void write(u8 data); + u8 read(); + +protected: + // device_t implementation + virtual void device_start() override; + + msx_audio_kb_port_interface *m_keyboard; +}; + + +void msx_audio_keyboards(device_slot_interface &device); + +#endif // MAME_BUS_MSX_CART_MSX_AUDIO_KB_H |